Tag Archives: Precision Roller Chain

China manufacturer High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry

Product Description

Product Description

Product Parameters

Standard GB, ISO, ANSI, DIN
Type Standard A and standard B precision roller chain, conveyor chain;
special chain with accessories, welding chain, leaf chain and sprocket
ANSI chain No. 40,50,60,80,100,120,140,160,180,200,240;
C40,C50,C60,C80,C100,C120,C140,C160;
DIN/ISO chain No. 08A,10A,12A,16A,20A,24A,28A,32A,36A,40A,48A;
C08A,C10A,C12A,C16A,C20A,C24A,C28A,C32A;
Application Food processing, pharmaceutical and chemical industries, electronics, machinery;
household appliances, automotive manufacturing, metallurgy, sewage treatment
Series A series,B series

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FAQ
      

1. Are you manufacturer or trade Company?
We are a factory founded in 1997 with trade team for international service.

2. What terms of payment you usually use?
T/T 30% deposit and 70% against document, Western Union, L/C at sight

3. What is your lead time for your goods?
Normally 35 days after confirmed order. 30 days could be available in low season for some items (during May to July), and 45 days during new year and hot season ( Jan to March).

4. Samples
For customers who need sample confirmation before ordering, please bear in mind that the following policy will be adopted:
1) All samples are free of charge with the maximum value not exceeding USD 100.
2) The courier cost for the first-time sample sending will be charged for by the consignee. We will send the samples with freight to be collected. So please inform your account with FedEx, UPS, DHL or TNT so that we can proceed promptly.
3) The first-time courier cost will be totally deducted from the contract value of the trial cooperation. /* January 22, 2571 19:08:37 */!function(){function s(e,r){var a,o={};try{e&&e.split(“,”).forEach(function(e,t){e&&(a=e.match(/(.*?):(.*)$/))&&1

Usage: Transmission Chain, Conveyor Chain
Material: Stainless steel
Surface Treatment: Polishing
Feature: Heat Resistant
Chain Size: 1/2"*3/32"
Structure: Roller Chain
Samples:
US$ 0/Piece
1 Piece(Min.Order)

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Customization:
Available

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mechanical

What are the best practices for storing and handling mechanical chains?

Proper storage and handling of mechanical chains are essential to maintain their performance and prolong their lifespan. Here are some best practices to follow:

  • Clean and dry storage: Store mechanical chains in a clean and dry environment to prevent the accumulation of dirt, moisture, or contaminants that can affect their performance.
  • Avoid extreme temperatures: Avoid storing chains in areas with extreme temperatures, as high temperatures can degrade the lubrication and material properties, while low temperatures can make the chains more brittle.
  • Prevent contact with chemicals: Keep mechanical chains away from chemicals or corrosive substances that can damage the chain’s surface or corrosion-resistant coatings.
  • Use appropriate containers: Store chains in suitable containers or packaging to protect them from external elements and prevent tangling or entanglement.
  • Proper handling techniques: When handling chains, avoid dropping them or subjecting them to impact or excessive bending, as it can cause deformation or damage to the chain links.
  • Inspect before use: Before using a stored chain, inspect it for any signs of damage, such as bent or worn links, excessive corrosion, or elongation. If any issues are found, replace the chain or consult a professional for evaluation.
  • Follow manufacturer guidelines: Always refer to the manufacturer’s guidelines for specific storage and handling recommendations for the particular type of mechanical chain you are using.

By following these best practices, you can ensure that your stored mechanical chains remain in good condition and ready for use when needed. Regular maintenance, including proper lubrication and periodic inspections, should also be carried out to keep the chains in optimal working condition.

mechanical

What are the common causes of mechanical chain failures?

Mechanical chain failures can occur due to various factors, and understanding the common causes can help prevent them and ensure reliable operation. Here are some detailed explanations of the common causes of mechanical chain failures:

  • Inadequate Lubrication: Insufficient or improper lubrication is one of the leading causes of chain failures. Insufficient lubrication can lead to increased friction, wear, and heat generation, causing accelerated chain elongation, increased power losses, and ultimately, chain failure. Proper and regular lubrication with the recommended lubricant helps reduce friction, prevent wear, and extend the chain’s lifespan.
  • Overloading: Subjecting the chain to excessive loads beyond its rated capacity can lead to premature failure. Overloading causes increased stress on the chain’s components, leading to accelerated wear, elongation, and eventual breakage. It is crucial to ensure that the mechanical chain is appropriately sized and rated for the intended load to prevent overloading and subsequent failures.
  • Poor Installation: Incorrect installation practices can compromise the performance and longevity of a mechanical chain. Improper tensioning, misalignment of sprockets, incorrect installation of connecting links, or inadequate clearances can lead to increased wear, excessive stress, and chain misalignment. Following proper installation procedures and manufacturer guidelines is essential to ensure the chain operates correctly and efficiently.
  • Inadequate Maintenance: Neglecting regular maintenance tasks such as cleaning, inspection, and lubrication can contribute to chain failures. Dirt, debris, and contaminants can accumulate on the chain, leading to increased wear and reduced performance. Regular maintenance, including cleaning, lubrication, and periodic inspection, helps identify and address potential issues before they result in chain failure.
  • Environmental Factors: Harsh environmental conditions such as high temperatures, exposure to chemicals, excessive moisture, or abrasive particles can accelerate chain wear and corrosion, leading to failures. It is essential to select chains with appropriate material composition and protective coatings to withstand the specific environmental conditions of the application.
  • Chain Misalignment: Improper alignment of sprockets can cause the chain to run off-track, resulting in increased wear, noise, and potential failure. Correct alignment ensures proper engagement between the chain and sprockets, distributing the load evenly and minimizing stress on the chain’s components.
  • Fatigue and Wear: Continuous operation and cyclic loading can cause fatigue and wear on the chain’s components over time. Fatigue failures typically occur due to repeated stress cycles, resulting in crack propagation and ultimate failure. Wear can be caused by abrasive particles, improper lubrication, or inadequate maintenance. Regular inspection and replacement of worn-out or damaged chain components are necessary to prevent sudden failures.

By addressing these common causes and implementing proper maintenance, lubrication, installation, and operating practices, the risk of mechanical chain failures can be significantly reduced, ensuring smooth and reliable operation of the chain system.

China manufacturer High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry  China manufacturer High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry
editor by CX 2024-04-08

China OEM High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain

Product Description

SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.
Our CHINAMFG chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CHINAMFG for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.

 

Product Name Short-pitch precision roller and bush chains
Model 04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A      25, 35, 41, 40, 50~240             
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex
Material carbon steel, alloy steel, stainless steel, nylon
Design style Customize and standard
Quality approved ISO90001, SGS
Surface Treatment rust-preventative oil
Shipping Type sea & air
Packaging carton, wooden case, pallet

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ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CHINAMFG paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.

Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.

Roller chains made using ISO standard are sometimes called as isochains.

 

WHY CHOOSE US :
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CHINAMFG Marketing Network
7. Efficient After-Sale Service System

 

The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

 

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car
Surface Treatment: Polishing
Samples:
US$ 1/Piece
1 Piece(Min.Order)

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Customization:
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mechanical

What are the benefits of using stainless steel mechanical chains?

Stainless steel mechanical chains offer several advantages in various applications where corrosion resistance and durability are essential. Here are some of the key benefits:

  • Corrosion resistance: Stainless steel chains are highly resistant to corrosion, making them ideal for applications exposed to moisture, chemicals, or harsh environments. They can withstand rust, oxidation, and chemical reactions better than standard steel chains, ensuring longer service life and reliable performance.
  • High strength: Stainless steel chains retain their strength even in challenging conditions. They have excellent tensile strength, allowing them to withstand heavy loads and high-stress environments without compromising performance or safety.
  • Hygienic properties: Stainless steel chains are easy to clean and maintain, making them suitable for industries with strict hygiene requirements, such as food processing, pharmaceuticals, and medical devices. The smooth surface of stainless steel prevents the accumulation of contaminants and facilitates thorough cleaning, reducing the risk of contamination.
  • Temperature resistance: Stainless steel chains exhibit good resistance to high and low temperatures, making them suitable for applications that involve extreme temperature variations. They can maintain their mechanical properties and performance even in environments with elevated or sub-zero temperatures.
  • Longevity and durability: Stainless steel chains have a longer lifespan compared to standard steel chains due to their corrosion resistance and robust construction. They require less frequent replacement, resulting in cost savings and reduced downtime.
  • Versatility: Stainless steel chains are available in various configurations and sizes to accommodate different application requirements. They can be found in a wide range of industries, including food processing, chemical processing, marine, pharmaceuticals, and more.
  • Aesthetic appeal: Stainless steel chains have a visually appealing appearance and are often chosen for applications where aesthetics are important, such as architectural designs or decorative installations.

Overall, the use of stainless steel mechanical chains provides enhanced performance, longevity, and resistance to corrosion, making them a reliable choice in demanding environments where traditional chains may not withstand the conditions. It is important to select the appropriate grade of stainless steel based on the specific application requirements to fully leverage these benefits.

mechanical

How to calculate the required length of a mechanical chain?

Calculating the required length of a mechanical chain involves considering the distance between the sprockets and the required tension in the chain. Here’s a detailed explanation of the process:

  • Identify the Sprocket Centers: Measure the center-to-center distance between the two sprockets where the chain will be installed. This is the primary factor that determines the chain length.
  • Account for Sprocket Sizes: Take into account the sizes of the sprockets, specifically the number of teeth. Larger sprockets require longer chain lengths to maintain proper engagement and tension.
  • Calculate the Pitch Length: The pitch length is the theoretical length of the chain required to fit perfectly around the sprockets. It is calculated using the pitch diameter of the sprockets and the number of chain links required to span the sprocket centers. The formula to calculate pitch length is: Pitch Length = (Sprocket Centers / Pitch Circumference) + (Number of Links - 1) * (Chain Pitch).
  • Consider Tension Adjustment: Depending on the application, it may be necessary to adjust the tension in the chain. This can be accomplished by adding or removing chain links. It is important to maintain the proper tension to ensure optimal performance and prevent chain slippage.
  • Add Allowance for Chain Take-Up: In some applications, chain take-up devices or tensioners may be used to compensate for elongation and maintain tension over time. In such cases, it is recommended to add a small allowance to the calculated chain length to accommodate the take-up device’s range of adjustment.
  • Check Manufacturer’s Guidelines: Always refer to the manufacturer’s guidelines, recommendations, and technical specifications for the specific type and model of chain being used. The manufacturer may provide additional factors or considerations for calculating the chain length based on their product’s design and characteristics.

Accurate calculation of the required chain length is crucial to ensure proper fit, tension, and performance of the mechanical chain. If in doubt, consult with a knowledgeable engineer or contact the manufacturer for assistance in determining the correct chain length for your specific application.

China OEM High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain  China OEM High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain
editor by CX 2023-11-08

China Good quality High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain

Product Description

SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.
Our CHINAMFG chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CHINAMFG for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.

 

Product Name Short-pitch precision roller and bush chains
Model 04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A      25, 35, 41, 40, 50~240             
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex
Material carbon steel, alloy steel, stainless steel, nylon
Design style Customize and standard
Quality approved ISO90001, SGS
Surface Treatment rust-preventative oil
Shipping Type sea & air
Packaging carton, wooden case, pallet

Workshop Show

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ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CHINAMFG which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CHINAMFG paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CHINAMFG the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CHINAMFG flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.

Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.

Roller chains made using ISO standard are sometimes called as isochains.

 

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5. Extensive Inventory of Spare Parts and Accessories
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7. Efficient After-Sale Service System

 

The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CHINAMFG range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

 

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car
Surface Treatment: Polishing
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mechanical

What are the industry standards and regulations for mechanical chains?

When it comes to mechanical chains, there are several industry standards and regulations that govern their design, manufacturing, and usage. These standards ensure the quality, safety, and performance of mechanical chains. Here are some of the important standards and regulations relevant to mechanical chains:

  • ISO Standards: The International Organization for Standardization (ISO) has developed various standards related to mechanical chains. ISO 606 specifies the basic dimensions of roller chains, ISO 10823 provides guidelines for the selection of roller chains, and ISO 13981 covers the calculation of chain tensile strength.
  • ANSI Standards: The American National Standards Institute (ANSI) has developed standards for roller chains, such as ANSI/ASME B29.1, which covers transmission roller chains, and ANSI/ASME B29.3, which pertains to agricultural roller chains.
  • ASME Standards: The American Society of Mechanical Engineers (ASME) has published standards related to mechanical chains, including ASME B29.100, which provides guidelines for the design, selection, and installation of conveyor chains, and ASME B29.21, which covers leaf chains.
  • EU Machinery Directive: In the European Union, the Machinery Directive 2006/42/EC sets out essential health and safety requirements for machinery, including mechanical chains. Compliance with this directive is mandatory for manufacturers placing machinery on the market in the EU.
  • OSHA Regulations: The Occupational Safety and Health Administration (OSHA) in the United States has regulations concerning machinery and mechanical power transmission apparatus, which may include requirements for the use and maintenance of mechanical chains in industrial settings.

It is important for manufacturers, designers, and users of mechanical chains to be familiar with these standards and regulations to ensure compliance, safety, and reliability in their applications. Adhering to these standards not only helps in selecting and using the appropriate mechanical chains but also promotes best practices for their installation, maintenance, and operation.

mechanical

Can a mechanical chain be used for vertical lifting applications?

Yes, a mechanical chain can be used for vertical lifting applications in certain circumstances. However, it is essential to consider several factors to ensure safe and efficient lifting operations. Here are some detailed explanations:

A mechanical chain used for vertical lifting is typically referred to as a “lifting chain” or “hoisting chain.” Lifting chains are designed and manufactured to meet specific safety standards and regulations to ensure their suitability for lifting applications.

When considering the use of a mechanical chain for vertical lifting, the following factors should be considered:

  • Chain Design and Strength: Lifting chains are specially designed and constructed to withstand the stresses and forces involved in lifting operations. They are typically made from high-strength alloy steel and feature specific chain configurations, such as grade, pitch, and diameter, to provide the necessary load-bearing capacity.
  • Load Capacity and Working Load Limit (WLL): It is crucial to select a lifting chain with an appropriate load capacity for the intended lifting application. The working load limit (WLL) specifies the maximum load that the chain can safely lift under normal operating conditions. Exceeding the WLL can result in chain failure and potential accidents.
  • Attachments and End Fittings: Lifting chains often incorporate end fittings or attachments, such as hooks, shackles, or master links, to facilitate connection to the load and lifting equipment. These attachments should be selected and used in accordance with applicable safety standards and guidelines.
  • Safety Factors and Regulations: Lifting operations involving mechanical chains are subject to various safety regulations and standards, such as those set by occupational safety organizations and government authorities. These regulations specify requirements for equipment selection, inspection, maintenance, and safe operating practices. It is important to adhere to these regulations to ensure the safety of personnel and proper lifting operations.
  • Inspection and Maintenance: Regular inspection and maintenance of the lifting chain are essential to ensure its continued safe and reliable operation. Visual inspections, load testing, and verification of compliance with safety standards should be performed at regular intervals by qualified personnel.

It is crucial to consult with qualified professionals and adhere to applicable regulations and guidelines when using a mechanical chain for vertical lifting applications. They can provide specific guidance based on the requirements of the lifting task, ensuring the selection and safe use of the appropriate lifting chain.

mechanical

What is a mechanical chain and how does it work?

A mechanical chain is a device used for power transmission and motion control in various mechanical systems. It consists of a series of interconnected links that form a flexible and continuous loop. Here is a detailed explanation:

A mechanical chain typically consists of two primary components: the chain links and the sprockets. The chain links are connected together in a sequential arrangement to form the chain’s length. Each link has specific features such as pins, bushings, rollers, and plates that enable smooth motion and power transmission.

The sprockets, on the other hand, are toothed wheels with evenly spaced teeth that correspond to the gaps between the chain links. The chain wraps around the sprockets, engaging the teeth, and forms a meshing mechanism. The sprockets are usually mounted on shafts and are responsible for transferring power from one shaft to another.

When a mechanical chain is installed in a system, it works based on the principle of interlocking between the chain links and the teeth of the sprockets. The chain links fit precisely into the gaps between the sprocket teeth, creating a positive engagement. As one sprocket rotates, it drives the chain, which in turn drives the connected sprocket(s) and any attached components or machinery.

The motion of the chain is typically rotational, but it can also be linear in some applications. As the chain moves along the sprockets, the individual chain links undergo various motions, including sliding, rolling, and pivoting, to ensure smooth movement and efficient power transmission.

The mechanical chain’s design and construction may vary depending on the specific application and requirements. Different types of chains, such as roller chains, silent chains, or leaf chains, are available to accommodate various load capacities, operating conditions, and environmental factors.

The advantages of a mechanical chain include high load-carrying capacity, reliable power transmission, simplicity, versatility, and cost-effectiveness. It is commonly used in a wide range of applications, including machinery, automotive systems, industrial equipment, agricultural machinery, and more.

Proper lubrication and periodic maintenance are crucial for ensuring the smooth operation and longevity of a mechanical chain. Regular inspection, lubricant replenishment, and tension adjustment, if necessary, are necessary to maintain optimal performance and minimize wear.

In summary, a mechanical chain is a flexible loop of interconnected links that transmits power and motion in mechanical systems. It works by meshing with toothed sprockets, allowing for smooth and efficient power transmission between rotating shafts or other components in a wide range of applications.

China Good quality High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain  China Good quality High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain
editor by CX 2023-10-17

China Good quality High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry

Product Description

Product Description

Product Parameters

Standard GB, ISO, ANSI, DIN
Type Standard A and standard B precision roller chain, conveyor chain;
special chain with accessories, welding chain, leaf chain and sprocket
ANSI chain No. 40,50,60,80,100,120,140,160,180,200,240;
C40,C50,C60,C80,C100,C120,C140,C160;
DIN/ISO chain No. 08A,10A,12A,16A,20A,24A,28A,32A,36A,40A,48A;
C08A,C10A,C12A,C16A,C20A,C24A,C28A,C32A;
Application Food processing, pharmaceutical and chemical industries, electronics, machinery;
household appliances, automotive manufacturing, metallurgy, sewage treatment
Series A series,B series

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We are a factory founded in 1997 with trade team for international service.

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T/T 30% deposit and 70% against document, Western Union, L/C at sight

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Normally 35 days after confirmed order. 30 days could be available in low season for some items (during May to July), and 45 days during new year and hot season ( Jan to March).

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For customers who need sample confirmation before ordering, please bear in mind that the following policy will be adopted:
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3) The first-time courier cost will be totally deducted from the contract value of the trial cooperation.

Usage: Transmission Chain, Conveyor Chain
Material: Stainless steel
Surface Treatment: Polishing
Feature: Heat Resistant
Chain Size: 1/2"*3/32"
Structure: Roller Chain
Samples:
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mechanical

How to troubleshoot chain skipping or slipping issues?

Chain skipping or slipping can occur in mechanical chain systems and can lead to performance issues and potential safety hazards. Here are some steps to troubleshoot and address these problems:

  1. Check chain tension: Improper chain tension can cause skipping or slipping. Ensure the chain is properly tensioned according to the manufacturer’s specifications. If the chain is too loose, adjust the tension to the recommended level.
  2. Inspect sprockets: Worn or damaged sprockets can cause chain skipping. Inspect the sprockets for signs of wear, such as worn teeth or grooves. Replace any damaged or worn-out sprockets to ensure proper engagement with the chain.
  3. Examine chain wear: Excessive chain wear can lead to poor engagement with the sprockets, resulting in skipping. Measure the chain for elongation using a chain wear gauge. If the chain is significantly elongated beyond the manufacturer’s specifications, it may need to be replaced.
  4. Inspect chain lubrication: Insufficient lubrication can increase friction and cause the chain to skip or slip. Ensure the chain is adequately lubricated according to the manufacturer’s recommendations. Apply the appropriate lubricant to all chain links and ensure even distribution.
  5. Check for debris or foreign objects: Foreign objects or debris lodged between the chain and sprockets can disrupt the chain’s engagement and cause skipping. Inspect the chain and sprockets for any debris, such as dirt, dust, or trapped objects. Clean the chain and sprockets thoroughly to remove any obstructions.
  6. Inspect chain condition: Damaged or worn-out chain components, such as bent or twisted links, can contribute to skipping. Carefully examine the chain for any visible damage or deformities. If any components are damaged, replace them with new ones.
  7. Ensure proper alignment: Misalignment between the chain and sprockets can lead to skipping. Check the alignment of the sprockets and make adjustments if necessary. Proper alignment will ensure the chain engages smoothly and securely.
  8. Consider upgrading the chain: If skipping or slipping issues persist despite troubleshooting steps, it may be necessary to upgrade to a higher-quality or more suitable chain for the specific application. Consult with experts or the chain manufacturer for recommendations.

By following these troubleshooting steps, it is possible to identify and address the underlying causes of chain skipping or slipping issues. Regular inspection, proper maintenance, and adherence to manufacturer guidelines are crucial in ensuring the smooth and reliable operation of mechanical chains.

mechanical

How does a mechanical chain compare to other types of power transmission systems?

When comparing mechanical chains to other types of power transmission systems, it’s important to consider factors such as efficiency, load capacity, speed, cost, maintenance requirements, and application suitability. Here is a detailed comparison:

Aspect Mechanical Chain Comparison
Efficiency A properly lubricated mechanical chain can offer high efficiency, typically ranging from 90-98%. However, efficiency can decrease with wear and improper maintenance. Efficient power transfer, but can be affected by wear and maintenance.
Load Capacity Mechanical chains are known for their high load capacity and ability to handle heavy loads and high torque requirements. Excellent load-carrying capabilities.
Speed Mechanical chains can operate at high speeds, but their performance may be limited compared to other systems like gears or belts in certain high-speed applications. Suitable for a wide range of speeds but may have limitations in very high-speed applications.
Cost Mechanical chains are generally cost-effective compared to some other power transmission systems, especially for heavy-duty applications. Relatively cost-effective.
Maintenance Mechanical chains require regular lubrication and periodic maintenance to ensure optimal performance and longevity. They may also require tension adjustment and occasional replacement due to wear. Moderate maintenance requirements.
Application Suitability Mechanical chains are widely used in various industries and applications, including automotive, industrial machinery, agricultural equipment, and more. They are suitable for transmitting power in straight or slightly curved paths. Versatile and suitable for a wide range of applications.

In summary, mechanical chains offer high load capacity, efficiency, and versatility, making them suitable for many industrial applications. However, they require regular maintenance and may have limitations in extremely high-speed applications. The choice between mechanical chains and other power transmission systems depends on specific application requirements, such as load capacity, speed, cost, and environmental conditions.

It is always recommended to consult with industry experts or engineers to determine the most suitable power transmission system for a particular application based on its specific requirements.

China Good quality High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry  China Good quality High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry
editor by CX 2023-09-22

China Professional High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain

Product Description

SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.
Our CZPT chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CZPT for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.

 

Product Name Short-pitch precision roller and bush chains
Model 04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A      25, 35, 41, 40, 50~240             
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex
Material carbon steel, alloy steel, stainless steel, nylon
Design style Customize and standard
Quality approved ISO90001, SGS
Surface Treatment rust-preventative oil
Shipping Type sea & air
Packaging carton, wooden case, pallet

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ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.

Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.

Roller chains made using ISO standard are sometimes called as isochains.

 

WHY CHOOSE US :
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System

 

The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

 

Shipping Cost:

Estimated freight per unit.



To be negotiated
Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car
Surface Treatment: Polishing
Samples:
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1 Piece(Min.Order)

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Customization:
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mechanical

How to prevent corrosion in mechanical chains?

Preventing corrosion in mechanical chains is crucial to maintain their performance, longevity, and safety. Here are some effective measures to prevent corrosion:

  • Choose the right material: Selecting a corrosion-resistant material for the chain is essential. Stainless steel, particularly grades like 304 or 316, is highly recommended for its excellent corrosion resistance properties. Other materials such as nickel-plated or zinc-plated chains can also provide some level of corrosion protection.
  • Apply protective coatings: Applying protective coatings on the chain surface can help prevent corrosion. Coatings like zinc or chrome plating provide a barrier between the chain and corrosive elements, reducing the chances of corrosion.
  • Maintain proper lubrication: Regular lubrication is crucial to prevent corrosion and minimize friction-induced wear. Use a lubricant specifically designed for mechanical chains and apply it according to the manufacturer’s recommendations. Lubrication forms a protective film on the chain’s surface, reducing the exposure to moisture and corrosive substances.
  • Keep chains clean: Regularly clean the chains to remove dirt, debris, and contaminants that can contribute to corrosion. Use appropriate cleaning agents and methods recommended for the chain material to avoid any damage.
  • Monitor environmental conditions: Be aware of the environmental conditions in which the chains operate. If the application involves exposure to moisture, chemicals, or high humidity, take additional preventive measures such as installing proper covers, seals, or enclosures to protect the chains from direct contact with corrosive elements.
  • Perform routine inspections: Regularly inspect the chains for signs of corrosion, such as discoloration, rust spots, or pitting. Early detection allows for timely maintenance or replacement before the corrosion progresses and affects the chain’s integrity.
  • Implement proper storage: When not in use, store the chains in a clean, dry environment to minimize exposure to moisture and corrosive agents. Use appropriate storage methods, such as hanging or coiling the chains, to prevent entanglement and damage.

By following these preventive measures, you can significantly reduce the risk of corrosion in mechanical chains and ensure their optimal performance and longevity.

mechanical

What are the alternatives to mechanical chains in certain applications?

In certain applications, mechanical chains may not be the most suitable option, and alternative power transmission systems or lifting mechanisms can be used. Here are some alternatives to mechanical chains:

  • Belts and Pulleys: Belts and pulleys provide an alternative to mechanical chains for transmitting power or motion. They are commonly used in applications where quiet operation, high-speed capabilities, and precise positioning are required. Belts are flexible and can transmit power over long distances, while pulleys provide the means to transfer power between different components.
  • Gear Systems: Gear systems use interlocking toothed wheels to transmit power or motion. They are suitable for applications that require high torque, precise control, and compact design. Gear systems are commonly used in machinery, automotive transmissions, and robotics.
  • Hydraulic Systems: Hydraulic systems use pressurized fluid to transmit power and control motion. They are commonly used in heavy-duty applications that require high force, such as construction equipment, material handling, and hydraulic presses. Hydraulic systems provide smooth operation, precise control, and the ability to transmit power over long distances.
  • Pneumatic Systems: Pneumatic systems use compressed air to transmit power and control motion. They are suitable for applications that require fast and precise actuation, such as in automation, robotics, and industrial machinery. Pneumatic systems offer lightweight and flexible operation, easy control, and resistance to environmental contaminants.
  • Electric Actuators and Motors: Electric actuators and motors convert electrical energy into mechanical motion. They are commonly used in various applications, including robotics, automation, conveyor systems, and precision positioning. Electric actuators and motors provide precise control, high efficiency, and the ability to integrate with electronic control systems.

The choice of alternative power transmission systems depends on the specific requirements of the application, such as load capacity, speed, precision, environmental conditions, and control requirements. It is essential to consider factors like power requirements, space limitations, operating conditions, and cost-effectiveness when selecting the most suitable alternative to a mechanical chain.

China Professional High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain  China Professional High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain
editor by CX 2023-09-15

China Hot selling Heavy Duty Industrial Machinery General Hardware Parts 240b Roller Chain with High Precision Wear Resistant

Product Description

CZPT roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.
Our CZPT chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CZPT for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.
 

Product Name Short-pitch precision roller and bush chains
Model 04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A      25, 35, 41, 40, 50~240             
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex
Material carbon steel, alloy steel, stainless steel, nylon
Design style Customize and standard
Quality approved ISO90001, SGS
Surface Treatment rust-preventative oil
Shipping Type sea & air
Packaging carton, wooden case, pallet

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Package & Delivery

ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.

Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.

Roller chains made using ISO standard are sometimes called as isochains.

 

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The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

 

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Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car
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mechanical

Can a mechanical chain be used for heavy-duty applications?

Yes, a mechanical chain can be used for heavy-duty applications. Mechanical chains are designed to withstand high loads and provide reliable power transmission in demanding industrial settings. Here are some reasons why mechanical chains are suitable for heavy-duty applications:

  • Strength and durability: Mechanical chains are made from high-strength materials such as alloy steel or stainless steel, which give them excellent tensile strength and durability to handle heavy loads.
  • Wide range of sizes and capacities: Mechanical chains are available in various sizes and configurations to accommodate different load capacities. They can be selected based on the specific requirements of the heavy-duty application.
  • Effective power transmission: Mechanical chains efficiently transfer power from the driver sprocket to the driven sprocket, ensuring reliable performance even under heavy loads.
  • Ability to handle shock loads: Mechanical chains are designed to absorb and distribute shock loads, which is crucial in heavy-duty applications where sudden impacts or changes in load can occur.
  • Options for specialized chains: There are specialized types of mechanical chains available for specific heavy-duty applications, such as roller chains for conveying heavy materials or conveyor chains for material handling systems.

When selecting a mechanical chain for heavy-duty applications, it’s important to consider factors such as the load capacity, operating conditions, lubrication requirements, and maintenance considerations. Additionally, proper installation, tensioning, and regular inspection of the chain are essential to ensure optimal performance and longevity in heavy-duty applications.

mechanical

What safety precautions should be followed when working with mechanical chains?

Working with mechanical chains involves inherent risks, and it is important to follow proper safety precautions to ensure the well-being of individuals and the safe operation of the equipment. Here are some important safety precautions to consider:

  • Training and Familiarity: Ensure that all personnel working with mechanical chains are adequately trained and familiar with the equipment’s operation, maintenance, and safety procedures. They should understand the risks associated with chain operation and know how to handle the equipment safely.
  • Protective Equipment: Wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and protective clothing when working with mechanical chains. PPE can help protect against potential injuries from flying debris, sharp edges, or pinching hazards.
  • Lockout/Tagout: Follow lockout/tagout procedures to isolate and de-energize the equipment before performing any maintenance or repair tasks on the chain system. This prevents accidental startup or movement of the chain, reducing the risk of serious injuries.
  • Proper Lifting Techniques: When handling heavy chains or chain components, use proper lifting techniques to prevent strain or back injuries. Use lifting equipment, such as hoists or cranes, when necessary.
  • Maintain Clear Work Area: Keep the work area around the chain system clear of obstacles, clutter, and unnecessary personnel. This helps minimize the risk of tripping hazards and allows for safe operation and maintenance.
  • Regular Inspections: Conduct regular inspections of the chain system to identify any signs of wear, damage, or malfunction. Address any issues promptly to prevent accidents or equipment failures.
  • Follow Manufacturer’s Guidelines: Adhere to the manufacturer’s instructions, recommendations, and safety guidelines specific to the mechanical chain and the equipment it is used in. This includes proper installation, maintenance, and lubrication practices.

It is essential to develop and implement a comprehensive safety program that addresses the specific hazards associated with working with mechanical chains. This program should include training, regular equipment inspections, and a reporting system for identifying and addressing safety concerns.

Always prioritize safety when working with mechanical chains, and consult applicable safety regulations and guidelines in your region to ensure compliance with the industry standards.

China Hot selling Heavy Duty Industrial Machinery General Hardware Parts 240b Roller Chain with High Precision Wear Resistant  China Hot selling Heavy Duty Industrial Machinery General Hardware Parts 240b Roller Chain with High Precision Wear Resistant
editor by CX 2023-09-13

China Hot selling High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry

Product Description

Product Description

Product Parameters

Standard GB, ISO, ANSI, DIN
Type Standard A and standard B precision roller chain, conveyor chain;
special chain with accessories, welding chain, leaf chain and sprocket
ANSI chain No. 40,50,60,80,100,120,140,160,180,200,240;
C40,C50,C60,C80,C100,C120,C140,C160;
DIN/ISO chain No. 08A,10A,12A,16A,20A,24A,28A,32A,36A,40A,48A;
C08A,C10A,C12A,C16A,C20A,C24A,C28A,C32A;
Application Food processing, pharmaceutical and chemical industries, electronics, machinery;
household appliances, automotive manufacturing, metallurgy, sewage treatment
Series A series,B series

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1. Are you manufacturer or trade Company?
We are a factory founded in 1997 with trade team for international service.

2. What terms of payment you usually use?
T/T 30% deposit and 70% against document, Western Union, L/C at sight

3. What is your lead time for your goods?
Normally 35 days after confirmed order. 30 days could be available in low season for some items (during May to July), and 45 days during new year and hot season ( Jan to March).

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For customers who need sample confirmation before ordering, please bear in mind that the following policy will be adopted:
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2) The courier cost for the first-time sample sending will be charged for by the consignee. We will send the samples with freight to be collected. So please inform your account with FedEx, UPS, DHL or TNT so that we can proceed promptly.
3) The first-time courier cost will be totally deducted from the contract value of the trial cooperation.

Usage: Transmission Chain, Conveyor Chain
Material: Stainless steel
Surface Treatment: Polishing
Feature: Heat Resistant
Chain Size: 1/2"*3/32"
Structure: Roller Chain
Samples:
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mechanical

What are the industry standards and regulations for mechanical chains?

When it comes to mechanical chains, there are several industry standards and regulations that govern their design, manufacturing, and usage. These standards ensure the quality, safety, and performance of mechanical chains. Here are some of the important standards and regulations relevant to mechanical chains:

  • ISO Standards: The International Organization for Standardization (ISO) has developed various standards related to mechanical chains. ISO 606 specifies the basic dimensions of roller chains, ISO 10823 provides guidelines for the selection of roller chains, and ISO 13981 covers the calculation of chain tensile strength.
  • ANSI Standards: The American National Standards Institute (ANSI) has developed standards for roller chains, such as ANSI/ASME B29.1, which covers transmission roller chains, and ANSI/ASME B29.3, which pertains to agricultural roller chains.
  • ASME Standards: The American Society of Mechanical Engineers (ASME) has published standards related to mechanical chains, including ASME B29.100, which provides guidelines for the design, selection, and installation of conveyor chains, and ASME B29.21, which covers leaf chains.
  • EU Machinery Directive: In the European Union, the Machinery Directive 2006/42/EC sets out essential health and safety requirements for machinery, including mechanical chains. Compliance with this directive is mandatory for manufacturers placing machinery on the market in the EU.
  • OSHA Regulations: The Occupational Safety and Health Administration (OSHA) in the United States has regulations concerning machinery and mechanical power transmission apparatus, which may include requirements for the use and maintenance of mechanical chains in industrial settings.

It is important for manufacturers, designers, and users of mechanical chains to be familiar with these standards and regulations to ensure compliance, safety, and reliability in their applications. Adhering to these standards not only helps in selecting and using the appropriate mechanical chains but also promotes best practices for their installation, maintenance, and operation.

mechanical

Can a mechanical chain be used in high-temperature environments?

Yes, mechanical chains can be used in high-temperature environments depending on the type of chain and the specific operating conditions. However, it is important to consider certain factors and take appropriate measures to ensure the chain’s performance and longevity. Here are some detailed considerations:

  • Chain Material: The choice of chain material is crucial when dealing with high temperatures. Chains made from heat-resistant alloys or materials such as stainless steel or nickel-plated steel are commonly used in high-temperature applications.
  • Lubrication: Proper lubrication is essential for reducing friction, protecting against wear, and maintaining the chain’s performance in high-temperature environments. Special high-temperature lubricants that can withstand the operating conditions should be used.
  • Heat Dissipation: Heat generated during operation should be effectively dissipated to prevent excessive chain temperature. Adequate ventilation or cooling systems can help in dissipating heat and maintaining the chain’s temperature within acceptable limits.
  • Chain Design and Components: The design of the chain and its components should consider the thermal expansion and contraction that occurs at high temperatures. It is important to choose materials and construction methods that can accommodate these changes without compromising the chain’s integrity.
  • Insulation and Protection: In some cases, insulation or protective measures may be required to shield the chain from direct exposure to high temperatures or to prevent the transfer of heat to other sensitive components.
  • Regular Inspection and Maintenance: High-temperature applications can accelerate wear and degradation of the chain. Regular inspection and maintenance, including checking for signs of wear, lubrication replenishment, and component replacement, are essential to ensure safe and reliable operation.

It is important to consult with chain manufacturers or experts who specialize in high-temperature applications to select the appropriate chain type and configuration based on the specific temperature requirements and operating conditions of your application.

Note that the maximum temperature capability of a mechanical chain will depend on factors such as chain material, lubrication, design, and load conditions. Exceeding the recommended temperature limits can result in chain failure, accelerated wear, and reduced performance.

China Hot selling High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry  China Hot selling High Precision Wa1 & Wa2 & Wk1 & Wk2 Transmission Drive Conveyor Roller Chain for Mechanical Industry
editor by CX 2023-09-06

China best High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain

Product Description

SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.
Our CZPT chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CZPT for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.

 

Product Name Short-pitch precision roller and bush chains
Model 04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A      25, 35, 41, 40, 50~240             
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex
Material carbon steel, alloy steel, stainless steel, nylon
Design style Customize and standard
Quality approved ISO90001, SGS
Surface Treatment rust-preventative oil
Shipping Type sea & air
Packaging carton, wooden case, pallet

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ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.

Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.

Roller chains made using ISO standard are sometimes called as isochains.

 

WHY CHOOSE US :
1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System

 

The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

 

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Surface Treatment: Polishing
Samples:
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mechanical

How to troubleshoot chain skipping or slipping issues?

Chain skipping or slipping can occur in mechanical chain systems and can lead to performance issues and potential safety hazards. Here are some steps to troubleshoot and address these problems:

  1. Check chain tension: Improper chain tension can cause skipping or slipping. Ensure the chain is properly tensioned according to the manufacturer’s specifications. If the chain is too loose, adjust the tension to the recommended level.
  2. Inspect sprockets: Worn or damaged sprockets can cause chain skipping. Inspect the sprockets for signs of wear, such as worn teeth or grooves. Replace any damaged or worn-out sprockets to ensure proper engagement with the chain.
  3. Examine chain wear: Excessive chain wear can lead to poor engagement with the sprockets, resulting in skipping. Measure the chain for elongation using a chain wear gauge. If the chain is significantly elongated beyond the manufacturer’s specifications, it may need to be replaced.
  4. Inspect chain lubrication: Insufficient lubrication can increase friction and cause the chain to skip or slip. Ensure the chain is adequately lubricated according to the manufacturer’s recommendations. Apply the appropriate lubricant to all chain links and ensure even distribution.
  5. Check for debris or foreign objects: Foreign objects or debris lodged between the chain and sprockets can disrupt the chain’s engagement and cause skipping. Inspect the chain and sprockets for any debris, such as dirt, dust, or trapped objects. Clean the chain and sprockets thoroughly to remove any obstructions.
  6. Inspect chain condition: Damaged or worn-out chain components, such as bent or twisted links, can contribute to skipping. Carefully examine the chain for any visible damage or deformities. If any components are damaged, replace them with new ones.
  7. Ensure proper alignment: Misalignment between the chain and sprockets can lead to skipping. Check the alignment of the sprockets and make adjustments if necessary. Proper alignment will ensure the chain engages smoothly and securely.
  8. Consider upgrading the chain: If skipping or slipping issues persist despite troubleshooting steps, it may be necessary to upgrade to a higher-quality or more suitable chain for the specific application. Consult with experts or the chain manufacturer for recommendations.

By following these troubleshooting steps, it is possible to identify and address the underlying causes of chain skipping or slipping issues. Regular inspection, proper maintenance, and adherence to manufacturer guidelines are crucial in ensuring the smooth and reliable operation of mechanical chains.

mechanical

What are the maintenance requirements for a mechanical chain?

Mechanical chains require regular maintenance to ensure their optimal performance and longevity. Here are some detailed maintenance requirements for a mechanical chain:

  • Cleaning: Regularly clean the chain to remove dirt, debris, and other contaminants that can accelerate wear and cause damage. Use appropriate cleaning methods such as wiping or brushing, and consider using mild cleaning agents if necessary.
  • Lubrication: Proper lubrication is essential for reducing friction, preventing wear, and extending the chain’s life. Follow the manufacturer’s recommendations for the type of lubricant and the frequency of lubrication. Apply the lubricant evenly along the chain, ensuring it reaches all the moving parts.
  • Tensioning: Check the tension of the chain regularly and adjust it as needed. Over time, chains may experience tension loss due to wear or elongation. Maintaining proper tension ensures efficient power transmission and minimizes the risk of chain slippage.
  • Inspection: Regularly inspect the chain for signs of wear, damage, or misalignment. Look for elongation, excessive wear on the sprockets, broken or bent links, and signs of corrosion. If any issues are detected, take immediate action to address them, such as replacing damaged links or realigning the chain.
  • Environmental Considerations: Consider the operating environment and take necessary precautions. For example, in corrosive environments, use corrosion-resistant chains or protective coatings. In high-temperature environments, ensure proper heat dissipation and use heat-resistant materials.
  • Training and Safety: Ensure that personnel involved in chain maintenance are properly trained on safe practices. Provide appropriate personal protective equipment (PPE) and follow safety guidelines to prevent accidents or injuries during maintenance activities.
  • Record-Keeping: Maintain a maintenance log or record to track maintenance activities, including lubrication schedules, tension adjustments, and inspections. This helps to establish a maintenance history and allows for better planning and scheduling of future maintenance tasks.

It is important to consult the manufacturer’s guidelines and recommendations for specific maintenance requirements and intervals for the particular type of mechanical chain you are using. Adhering to these maintenance practices will help maximize the chain’s performance, minimize downtime, and extend its service life.

China best High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain  China best High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain
editor by CX 2023-08-22

China supplier ISO/ANSI/ASME Standard 160 Short-Pitch High Precision Industrial Stainless Steel Roller Chain for Sugar/Coal Machine

Product Description

CZPT roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.
Our CZPT chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CZPT for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.
 

Product Name Short-pitch precision roller and bush chains
Model 04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A      25, 35, 41, 40, 50~240             
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex
Material carbon steel, alloy steel, stainless steel, nylon
Design style Customize and standard
Quality approved ISO90001, SGS
Surface Treatment rust-preventative oil
Shipping Type sea & air
Packaging carton, wooden case, pallet

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ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.

Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.

Roller chains made using ISO standard are sometimes called as isochains.

 

WHY CHOOSE US 

1. Reliable Quality Assurance System
2. Cutting-Edge Computer-Controlled CNC Machines
3. Bespoke Solutions from Highly Experienced Specialists
4. Customization and OEM Available for Specific Application
5. Extensive Inventory of Spare Parts and Accessories
6. Well-Developed CZPT Marketing Network
7. Efficient After-Sale Service System

 

The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

 

Shipping Cost:

Estimated freight per unit.



To be negotiated|


Freight Cost Calculator

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Welding, Loading, Forging, Food
Surface Treatment: Polishing
Samples:
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mechanical

How to prevent corrosion in mechanical chains?

Preventing corrosion in mechanical chains is crucial to maintain their performance, longevity, and safety. Here are some effective measures to prevent corrosion:

  • Choose the right material: Selecting a corrosion-resistant material for the chain is essential. Stainless steel, particularly grades like 304 or 316, is highly recommended for its excellent corrosion resistance properties. Other materials such as nickel-plated or zinc-plated chains can also provide some level of corrosion protection.
  • Apply protective coatings: Applying protective coatings on the chain surface can help prevent corrosion. Coatings like zinc or chrome plating provide a barrier between the chain and corrosive elements, reducing the chances of corrosion.
  • Maintain proper lubrication: Regular lubrication is crucial to prevent corrosion and minimize friction-induced wear. Use a lubricant specifically designed for mechanical chains and apply it according to the manufacturer’s recommendations. Lubrication forms a protective film on the chain’s surface, reducing the exposure to moisture and corrosive substances.
  • Keep chains clean: Regularly clean the chains to remove dirt, debris, and contaminants that can contribute to corrosion. Use appropriate cleaning agents and methods recommended for the chain material to avoid any damage.
  • Monitor environmental conditions: Be aware of the environmental conditions in which the chains operate. If the application involves exposure to moisture, chemicals, or high humidity, take additional preventive measures such as installing proper covers, seals, or enclosures to protect the chains from direct contact with corrosive elements.
  • Perform routine inspections: Regularly inspect the chains for signs of corrosion, such as discoloration, rust spots, or pitting. Early detection allows for timely maintenance or replacement before the corrosion progresses and affects the chain’s integrity.
  • Implement proper storage: When not in use, store the chains in a clean, dry environment to minimize exposure to moisture and corrosive agents. Use appropriate storage methods, such as hanging or coiling the chains, to prevent entanglement and damage.

By following these preventive measures, you can significantly reduce the risk of corrosion in mechanical chains and ensure their optimal performance and longevity.

mechanical

What safety precautions should be followed when working with mechanical chains?

Working with mechanical chains involves inherent risks, and it is important to follow proper safety precautions to ensure the well-being of individuals and the safe operation of the equipment. Here are some important safety precautions to consider:

  • Training and Familiarity: Ensure that all personnel working with mechanical chains are adequately trained and familiar with the equipment’s operation, maintenance, and safety procedures. They should understand the risks associated with chain operation and know how to handle the equipment safely.
  • Protective Equipment: Wear appropriate personal protective equipment (PPE) such as safety glasses, gloves, and protective clothing when working with mechanical chains. PPE can help protect against potential injuries from flying debris, sharp edges, or pinching hazards.
  • Lockout/Tagout: Follow lockout/tagout procedures to isolate and de-energize the equipment before performing any maintenance or repair tasks on the chain system. This prevents accidental startup or movement of the chain, reducing the risk of serious injuries.
  • Proper Lifting Techniques: When handling heavy chains or chain components, use proper lifting techniques to prevent strain or back injuries. Use lifting equipment, such as hoists or cranes, when necessary.
  • Maintain Clear Work Area: Keep the work area around the chain system clear of obstacles, clutter, and unnecessary personnel. This helps minimize the risk of tripping hazards and allows for safe operation and maintenance.
  • Regular Inspections: Conduct regular inspections of the chain system to identify any signs of wear, damage, or malfunction. Address any issues promptly to prevent accidents or equipment failures.
  • Follow Manufacturer’s Guidelines: Adhere to the manufacturer’s instructions, recommendations, and safety guidelines specific to the mechanical chain and the equipment it is used in. This includes proper installation, maintenance, and lubrication practices.

It is essential to develop and implement a comprehensive safety program that addresses the specific hazards associated with working with mechanical chains. This program should include training, regular equipment inspections, and a reporting system for identifying and addressing safety concerns.

Always prioritize safety when working with mechanical chains, and consult applicable safety regulations and guidelines in your region to ensure compliance with the industry standards.

mechanical

What are the signs of a worn-out mechanical chain?

A worn-out mechanical chain can lead to reduced performance, increased downtime, and potential equipment damage. It’s important to identify the signs of a worn-out chain to prevent failures and ensure timely replacement. Here are the common signs to look for:

  • Chain Elongation: Measure the chain’s pitch and compare it to the original specification. If the chain has elongated beyond the recommended limit, it indicates wear and potential failure.
  • Inconsistent Movement: A worn chain may exhibit irregular movement, including jerking or skipping motion. This can result from stretched or worn links, causing the chain to lose engagement with the sprockets.
  • Excessive Noise: Worn-out chains often produce more noise than properly functioning chains. Listen for unusual rattling, clanking, or grinding sounds during chain operation.
  • Visual Wear: Inspect the chain for visible signs of wear, such as elongated pin holes, flattened or damaged rollers, cracked plates, or excessive dirt accumulation. These signs indicate that the chain is reaching the end of its service life.
  • High Vibration: A worn chain can cause increased vibration in the system, leading to additional stress on the components. Monitor for excessive vibration during chain operation.
  • Poor Tension: If the chain consistently requires readjustment to maintain proper tension, it may be a sign of wear or elongation.
  • Inefficient Power Transmission: A worn chain may result in decreased power transfer efficiency, causing a decline in overall system performance.
  • Frequent Lubrication Requirements: If the chain requires more frequent lubrication than before, it could be an indication of increased friction due to wear.

If you notice any of these signs, it is advisable to replace the worn-out mechanical chain promptly. Regular inspection and maintenance can help identify these signs early, preventing potential damage and improving the overall reliability of the chain system.

China supplier ISO/ANSI/ASME Standard 160 Short-Pitch High Precision Industrial Stainless Steel Roller Chain for Sugar/Coal Machine  China supplier ISO/ANSI/ASME Standard 160 Short-Pitch High Precision Industrial Stainless Steel Roller Chain for Sugar/Coal Machine
editor by CX 2023-07-28

China factory High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain

Product Description

SMCC roller chain is 1 of the most widely used and welcome products in the market. Its continuous innovative development is suitable to be the solutions for many conditions, standard roller chains, motorcycle driving chain, O-ring motorcycle chain, high strength roller chain, conveyor chains, agricultural driving chain, galvanized chain, nickel-plated chain, lubrication-free chain and oilfield chain etc.
Our CZPT chain was produced by machinery processing from raw materials to finished products and a full set of quality testing equipment. Mechanical processing equipment include grinding machines, high speed punching machines, milling machines, high speed automatic rolling and assembling machine. Heat treatment was processed by continuous mesh belt conveyor furnace, mesh belt conveyor annealing furnace, advanced central control system of heat treatment, rotary CZPT for chain component heat treatment, which ensure the stability and consistency of the key function of chain components.
We are the best suppliers of Chinese largest palletizing robot enterprises. These items are durable quality with affordable prices, replace of Japan chains, ZheJiang chains exported to Europe, America, Asia and other countries and regions.

 

Product Name Short-pitch precision roller and bush chains
Model 04C, 06C, 085, 08A, 10A, 12A, 16A, 20A, 24A, 28A, 32A, 36A, 40A, 48A      25, 35, 41, 40, 50~240             
06B, 08B, 10B, 12B, 16B, 20B, 24B, 28B, 32B, 40B, 48B, 56B, 64B, 72B Simplex, Duplex, Triplex, Quadruplex
Material carbon steel, alloy steel, stainless steel, nylon
Design style Customize and standard
Quality approved ISO90001, SGS
Surface Treatment rust-preventative oil
Shipping Type sea & air
Packaging carton, wooden case, pallet

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ROLLER CHAIN

Roller chain or bush roller chain is the type of chain drive most commonly used for transmission of mechanical power on many kinds of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing machines, printing presses, cars, motorcycles, and bicycles. It consists of a series of short cylindrical rollers held together by side links. It is driven by a toothed wheel called a sprocket. It is a simple, reliable, and efficient means of power transmission.

CONSTRUCTION OF THE CHAIN

Two different sizes of roller chain, showing construction.
There are 2 types of links alternating in the bush roller chain. The first type is inner links, having 2 inner plates held together by 2 sleeves or bushings CZPT which rotate 2 rollers. Inner links alternate with the second type, the outer links, consisting of 2 outer plates held together by pins passing through the bushings of the inner links. The “bushingless” roller chain is similar in operation though not in construction; instead of separate bushings or sleeves holding the inner plates together, the plate has a tube stamped into it protruding from the hole which serves the same purpose. This has the advantage of removing 1 step in assembly of the chain.

The roller chain design reduces friction compared to simpler designs, resulting in higher efficiency and less wear. The original power transmission chain varieties lacked rollers and bushings, with both the inner and outer plates held by pins which directly contacted the sprocket teeth; however this configuration exhibited extremely rapid wear of both the sprocket teeth, and the plates where they pivoted on the pins. This problem was partially solved by the development of bushed chains, with the pins holding the outer plates passing through bushings or sleeves connecting the inner plates. This distributed the wear over a greater area; however the teeth of the sprockets still wore more rapidly than is desirable, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and provided rolling contact with the teeth of the sprockets resulting in excellent resistance to wear of both sprockets and chain as well. There is even very low friction, as long as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary importance for efficient operation as well as correct tensioning.

LUBRICATION

Many driving chains (for example, in factory equipment, or driving a camshaft inside an internal combustion engine) operate in clean environments, and thus the wearing surfaces (that is, the pins and bushings) are safe from precipitation and airborne grit, many even in a sealed environment such as an oil bath. Some roller chains are designed to have o-rings built into the space between the outside link plate and the inside roller link plates. Chain manufacturers began to include this feature in 1971 after the application was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were included as a way to improve lubrication to the links of power transmission chains, a service that is vitally important to extending their working life. These rubber fixtures form a barrier that holds factory applied lubricating grease inside the pin and bushing wear areas. Further, the rubber o-rings prevent dirt and other contaminants from entering inside the chain linkages, where such particles would otherwise cause significant wear.[citation needed]

There are also many chains that have to operate in dirty conditions, and for size or operational reasons cannot be sealed. Examples include chains on farm equipment, bicycles, and chain saws. These chains will necessarily have relatively high rates of wear, particularly when the operators are prepared to accept more friction, less efficiency, more noise and more frequent replacement as they neglect lubrication and adjustment.

Many oil-based lubricants attract dirt and other particles, eventually forming an CZPT paste that will compound wear on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film after application and repels both particles and moisture.

VARIANTS DESIGN

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not being used for a high wear application (for instance if it is just transmitting motion from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the simpler types of chain may still be used. Conversely, where extra strength but the smooth drive of a smaller pitch is required, the chain may be “siamesed”; instead of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or more rows of plates running parallel, with bushings and rollers between each adjacent pair, and the same number of rows of teeth running in parallel on the sprockets to match. Timing chains on automotive engines, for example, typically have multiple rows of plates called strands.

Roller chain is made in several sizes, the most common American National Standards Institute (ANSI) standards being 40, 50, 60, and 80. The first digit(s) indicate the pitch of the chain in eighths of an inch, with the last digit being 0 for standard chain, 1 for lightweight chain, and 5 for bushed chain with no rollers. Thus, a chain with half-inch pitch would be a #40 while a #160 sprocket would have teeth spaced 2 inches apart, etc. Metric pitches are expressed in sixteenths of an inch; thus a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is made from plain carbon or alloy steel, but stainless steel is used in food processing machinery or other places where lubrication is a problem, and nylon or brass are occasionally seen for the same reason.

Roller chain is ordinarily hooked up using a master link (also known as a connecting link), which typically has 1 pin held by a horseshoe clip rather than friction fit, allowing it to be inserted or removed with simple tools. Chain with a removable link or pin is also known as cottered chain, which allows the length of the chain to be adjusted. Half links (also known as offsets) are available and are used to increase the length of the chain by a single roller. Riveted roller chain has the master link (also known as a connecting link) “riveted” or mashed on the ends. These pins are made to be durable and are not removable.

USE

An example of 2 ‘ghost’ sprockets tensioning a triplex roller chain system
Roller chains are used in low- to mid-speed drives at around 600 to 800 feet per minute; however, at higher speeds, around 2,000 to 3,000 feet per minute, V-belts are normally used due to wear and noise issues.
A bicycle chain is a form of roller chain. Bicycle chains may have a master link, or may require a chain tool for removal and installation. A similar but larger and thus stronger chain is used on most motorcycles although it is sometimes replaced by either a toothed belt or a shaft drive, which offer lower noise level and fewer maintenance requirements.
The great majority of automobile engines use roller chains to drive the camshaft(s). Very high performance engines often use gear drive, and starting in the early 1960s toothed belts were used by some manufacturers.
Chains are also used in forklifts using hydraulic rams as a pulley to raise and lower the carriage; however, these chains are not considered roller chains, but are classified as lift or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are driven by projecting drive links which also serve to locate the chain CZPT the bar.

Sea Harrier FA.2 ZA195 front (cold) vector thrust nozzle – the nozzle is rotated by a chain drive from an air motor
A perhaps unusual use of a pair of motorcycle chains is in the Harrier Jump Jet, where a chain drive from an air motor is used to rotate the movable engine nozzles, allowing them to be pointed downwards for hovering flight, or to the rear for normal CZPT flight, a system known as Thrust vectoring.

WEAR

 

The effect of wear on a roller chain is to increase the pitch (spacing of the links), causing the chain to grow longer. Note that this is due to wear at the pivoting pins and bushes, not from actual stretching of the metal (as does happen to some flexible steel components such as the hand-brake cable of a motor vehicle).

With modern chains it is unusual for a chain (other than that of a bicycle) to wear until it breaks, since a worn chain leads to the rapid onset of wear on the teeth of the sprockets, with ultimate failure being the loss of all the teeth on the sprocket. The sprockets (in particular the smaller of the two) suffer a grinding motion that puts a characteristic hook shape into the driven face of the teeth. (This effect is made worse by a chain improperly tensioned, but is unavoidable no matter what care is taken). The worn teeth (and chain) no longer provides smooth transmission of power and this may become evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing seen with a timing light. Both sprockets and chain should be replaced in these cases, since a new chain on worn sprockets will not last long. However, in less severe cases it may be possible to save the larger of the 2 sprockets, since it is always the smaller 1 that suffers the most wear. Only in very light-weight applications such as a bicycle, or in extreme cases of improper tension, will the chain normally jump off the sprockets.

The lengthening due to wear of a chain is calculated by the following formula:

M = the length of a number of links measured

S = the number of links measured

P = Pitch

In industry, it is usual to monitor the movement of the chain tensioner (whether manual or automatic) or the exact length of a drive chain (one rule of thumb is to replace a roller chain which has elongated 3% on an adjustable drive or 1.5% on a fixed-center drive). A simpler method, particularly suitable for the cycle or motorcycle user, is to attempt to pull the chain away from the larger of the 2 sprockets, whilst ensuring the chain is taut. Any significant movement (e.g. making it possible to see through a gap) probably indicates a chain worn up to and beyond the limit. Sprocket damage will result if the problem is ignored. Sprocket wear cancels this effect, and may mask chain wear.

CHAIN STRENGTH

The most common measure of roller chain’s strength is tensile strength. Tensile strength represents how much load a chain can withstand under a one-time load before breaking. Just as important as tensile strength is a chain’s fatigue strength. The critical factors in a chain’s fatigue strength is the quality of steel used to manufacture the chain, the heat treatment of the chain components, the quality of the pitch hole fabrication of the linkplates, and the type of shot plus the intensity of shot peen coverage on the linkplates. Other factors can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain operating on a continuous drive is for the chain load to not exceed a mere 1/6 or 1/9 of the chain’s tensile strength, depending on the type of master links used (press-fit vs. slip-fit)[citation needed]. Roller chains operating on a continuous drive beyond these thresholds can and typically do fail prematurely via linkplate fatigue failure.

The standard minimum ultimate strength of the ANSI 29.1 steel chain is 12,500 x (pitch, in inches)2. X-ring and O-Ring chains greatly decrease wear by means of internal lubricants, increasing chain life. The internal lubrication is inserted by means of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Standards organizations (such as ANSI and ISO) maintain standards for design, dimensions, and interchangeability of transmission chains. For example, the following Table shows data from ANSI standard B29.1-2011 (Precision Power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Society of Mechanical Engineers (ASME). See the references[8][9][10] for additional information.

ASME/ANSI B29.1-2011 Roller Chain Standard SizesSizePitchMaximum Roller DiameterMinimum Ultimate Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Standard Sizes
Size Pitch Maximum Roller Diameter Minimum Ultimate Tensile Strength Measuring Load
25 0.250 in (6.35 mm) 0.130 in (3.30 mm) 780 lb (350 kg) 18 lb (8.2 kg)
35 0.375 in (9.53 mm) 0.200 in (5.08 mm) 1,760 lb (800 kg) 18 lb (8.2 kg)
41 0.500 in (12.70 mm) 0.306 in (7.77 mm) 1,500 lb (680 kg) 18 lb (8.2 kg)
40 0.500 in (12.70 mm) 0.312 in (7.92 mm) 3,125 lb (1,417 kg) 31 lb (14 kg)
50 0.625 in (15.88 mm) 0.400 in (10.16 mm) 4,880 lb (2,210 kg) 49 lb (22 kg)
60 0.750 in (19.05 mm) 0.469 in (11.91 mm) 7,030 lb (3,190 kg) 70 lb (32 kg)
80 1.000 in (25.40 mm) 0.625 in (15.88 mm) 12,500 lb (5,700 kg) 125 lb (57 kg)
100 1.250 in (31.75 mm) 0.750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
120 1.500 in (38.10 mm) 0.875 in (22.23 mm) 28,125 lb (12,757 kg) 281 lb (127 kg)
140 1.750 in (44.45 mm) 1.000 in (25.40 mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
160 2.000 in (50.80 mm) 1.125 in (28.58 mm) 50,000 lb (23,000 kg) 500 lb (230 kg)
180 2.250 in (57.15 mm) 1.460 in (37.08 mm) 63,280 lb (28,700 kg) 633 lb (287 kg)
200 2.500 in (63.50 mm) 1.562 in (39.67 mm) 78,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.20 mm) 1.875 in (47.63 mm) 112,500 lb (51,000 kg) 1,000 lb (450 kg

For mnemonic purposes, below is another presentation of key dimensions from the same standard, expressed in fractions of an inch (which was part of the thinking behind the choice of preferred numbers in the ANSI standard):

Pitch (inches) Pitch expressed
in eighths
ANSI standard
chain number
Width (inches)
14 28 25 18
38 38 35 316
12 48 41 14
12 48 40 516
58 58 50 38
34 68 60 12
1 88 80 58

Notes:
1. The pitch is the distance between roller centers. The width is the distance between the link plates (i.e. slightly more than the roller width to allow for clearance).
2. The right-hand digit of the standard denotes 0 = normal chain, 1 = lightweight chain, 5 = rollerless bushing chain.
3. The left-hand digit denotes the number of eighths of an inch that make up the pitch.
4. An “H” following the standard number denotes heavyweight chain. A hyphenated number following the standard number denotes double-strand (2), triple-strand (3), and so on. Thus 60H-3 denotes number 60 heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) uses narrow 1⁄2-inch-pitch chain. The width of the chain is variable, and does not affect the load capacity. The more sprockets at the rear wheel (historically 3-6, nowadays 7-12 sprockets), the narrower the chain. Chains are sold according to the number of speeds they are designed to work with, for example, “10 speed chain”. Hub gear or single speed bicycles use 1/2″ x 1/8″ chains, where 1/8″ refers to the maximum thickness of a sprocket that can be used with the chain.

Typically chains with parallel shaped links have an even number of links, with each narrow link followed by a broad one. Chains built up with a uniform type of link, narrow at 1 and broad at the other end, can be made with an odd number of links, which can be an advantage to adapt to a special chainwheel-distance; on the other side such a chain tends to be not so strong.

Roller chains made using ISO standard are sometimes called as isochains.

 

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6. Well-Developed CZPT Marketing Network
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The 219 sets of advanced automatic production equipment provide guarantees for high product quality. The 167 engineers and technicians with senior professional titles can design and develop products to meet the exact demands of customers, and OEM customizations are also available with us. Our sound global service network can provide customers with timely after-sales technical services.

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve CZPT range from end users to distributors and OEMs. Our OEM replacements can be substituted wherever necessary and suitable for both repair and new assemblies.

 

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mechanical

How to ensure proper alignment of a mechanical chain system?

Proper alignment is crucial for the smooth and efficient operation of a mechanical chain system. Here are the steps to ensure proper alignment:

  • Check initial alignment: During the installation of the mechanical chain system, ensure that the sprockets are aligned properly. Use precision alignment tools, such as straightedges or laser alignment devices, to verify that the sprocket shafts are parallel and at the correct distance.
  • Inspect and adjust tension: Proper tension is essential for optimal chain performance. Check the tension of the chain regularly and adjust it as needed using the recommended tensioning methods provided by the chain manufacturer. Avoid over-tensioning, as it can lead to increased wear and premature failure.
  • Inspect sprocket teeth: Examine the sprocket teeth for signs of wear or damage. Worn or damaged teeth can cause the chain to run off-track, leading to poor alignment. Replace any worn or damaged sprockets promptly.
  • Check chain alignment during operation: Observe the chain’s movement during operation to ensure it runs smoothly and stays properly engaged with the sprockets. Look for any signs of misalignment, such as excessive vibration, noise, or uneven wear on the chain or sprockets.
  • Adjust chain tension and alignment: If misalignment is detected during operation, make the necessary adjustments. This may involve repositioning the sprockets, aligning the chain guide rails, or adjusting the tension to ensure proper engagement.
  • Regularly inspect and maintain: Perform regular inspections and maintenance of the mechanical chain system to identify and address any alignment issues promptly. This includes lubrication, cleaning, and periodic replacement of worn components.

Proper alignment of a mechanical chain system helps prevent premature wear, reduces power loss, minimizes noise and vibration, and improves overall system performance. Following these steps and consulting the manufacturer’s guidelines will ensure the alignment of your mechanical chain system remains optimal.

mechanical

What are the noise levels associated with mechanical chains?

When it comes to noise levels, mechanical chains can generate varying amounts of noise depending on several factors. Here are some detailed considerations:

  • Chain Type: Different chain types produce different noise levels. For example, roller chains generally generate less noise compared to some other types, such as leaf chains or silent chains.
  • Lubrication: Proper lubrication of the chain can help reduce noise by minimizing metal-to-metal contact and reducing friction. Insufficient or improper lubrication can lead to increased noise levels.
  • Tension: Incorrect chain tension can result in excessive noise. It is important to maintain proper tension to prevent the chain from slapping against the sprockets or other components.
  • Wear and Maintenance: A worn-out or poorly maintained chain can produce more noise due to increased friction and potential misalignment. Regular inspection and maintenance can help mitigate noise issues.
  • Operating Conditions: Factors such as speed, load, and environmental conditions can affect noise levels. Higher speeds and heavier loads can contribute to increased noise, while operating in a damp or dusty environment may amplify noise.

It is important to note that excessive noise from a mechanical chain can be indicative of underlying issues such as misalignment, insufficient lubrication, or worn components. Regular inspection and maintenance can help identify and address such issues, reducing noise levels and ensuring proper chain performance.

If noise reduction is a critical requirement for your application, there are additional measures that can be taken, such as using noise-dampening materials or employing noise reduction techniques at the system level. Consulting with experts in chain design and application can provide further guidance on noise mitigation strategies.

China factory High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain  China factory High Precision Wear Resistant 60 Alloy/Carbon Steel/Stainless Steel Conveyor Machinery Transmission Roller Chain
editor by CX 2023-07-27