Tag Archives: bush chain

China OEM Chain Manufacturer 28A-2 a Series Short Pitch Precision Duplex Mechanical Industrial & Agricultural Driving Chains and Bush Chains for Forklift &Car Parking

Product Description

A Series Short Pitch Precision Duplex Roller Chains & Bush Chains

ISO/ANSI/ DIN
Chain No.
Chain No. Pitch

P
mm

Roller diameter

d1max
mm

Width between inner plates
b1min
mm
Pin diameter

d2max
mm

Pin length Inner plate depth
h2max
mm
Plate thickness

Tmax
mm

Transverse                     Pt 
mm
Tensile strength

Qmin
kN/lbf

Average tensile strength
Q0
kN
Weight per meter
q  
kg/m
Lmax
mm
Lcmax
mm
140-2 28A-2 44.450 25.40 25.22 12.70 103.3 107.9 41.00 5.60 48.87 344.80/78364 445.0 15.14

*Bush chain: d1 in the table indicates the external diameter of the bush

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.

 

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Usage: Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain
Material: Alloy
Surface Treatment: Polishing
Feature: Heat Resistant
Chain Size: 1045, Stainless Steel , Q235, Brass
Structure: Roller Chain
Samples:
US$ 0/Meter
1 Meter(Min.Order)

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Request Sample

Customization:
Available

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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 OEM Chain Manufacturer 28A-2 a Series Short Pitch Precision Duplex Mechanical Industrial & Agricultural Driving Chains and Bush Chains for Forklift &Car Parking  China OEM Chain Manufacturer 28A-2 a Series Short Pitch Precision Duplex Mechanical Industrial & Agricultural Driving Chains and Bush Chains for Forklift &Car Parking
editor by CX 2024-05-09

China supplier Chain Manufacturer 28A-2 a Series Short Pitch Precision Duplex Mechanical Industrial & Agricultural Driving Chains and Bush Chains for Forklift &Car Parking

Product Description

A Series Short Pitch Precision Duplex Roller Chains & Bush Chains

ISO/ANSI/ DIN
Chain No.
Chain No. Pitch

P
mm

Roller diameter

d1max
mm

Width between inner plates
b1min
mm
Pin diameter

d2max
mm

Pin length Inner plate depth
h2max
mm
Plate thickness

Tmax
mm

Transverse                     Pt 
mm
Tensile strength

Qmin
kN/lbf

Average tensile strength
Q0
kN
Weight per meter
q  
kg/m
Lmax
mm
Lcmax
mm
140-2 28A-2 44.450 25.40 25.22 12.70 103.3 107.9 41.00 5.60 48.87 344.80/78364 445.0 15.14

*Bush chain: d1 in the table indicates the external diameter of the bush

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.

 

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Usage: Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain
Material: Alloy
Surface Treatment: Polishing
Feature: Heat Resistant
Chain Size: 1045, Stainless Steel , Q235, Brass
Structure: Roller Chain
Samples:
US$ 0/Meter
1 Meter(Min.Order)

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Customization:
Available

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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

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 supplier Chain Manufacturer 28A-2 a Series Short Pitch Precision Duplex Mechanical Industrial & Agricultural Driving Chains and Bush Chains for Forklift &Car Parking  China supplier Chain Manufacturer 28A-2 a Series Short Pitch Precision Duplex Mechanical Industrial & Agricultural Driving Chains and Bush Chains for Forklift &Car Parking
editor by CX 2024-04-09

China Professional Transmission Drive Mechanical Industrial Standard Conveyor Silent Motor Bush Cogs Stainless Steel Roller Duplex Engineering Cast Special Leaf Chain

Product Description

transmission drive mechanical industrial standard conveyor silent motor bush cogs Stainless steel  roller duplex Engineering Cast Special leaf chain 

Usage: Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain
Material: Iron
Surface Treatment: Oil Blooming
Feature: Oil Resistant
Chain Size: 1/2"*3/32"
Structure: Roller Chain
Samples:
US$ 9999/Piece
1 Piece(Min.Order)

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Request Sample

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 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.

mechanical

What are the different types of mechanical chains available?

There are several types of mechanical chains available, each designed for specific applications and requirements. Here is a detailed explanation:

  • Roller Chains: Roller chains are the most common type of mechanical chains. They consist of inner and outer plates, pins, bushings, and rollers. The rollers are free to rotate on the bushings, reducing friction and enabling smoother motion. Roller chains are known for their high load-carrying capacity and are widely used in industrial machinery, automotive systems, and power transmission applications.
  • Silent Chains: Silent chains, also known as inverted-tooth chains, feature tooth-shaped links with rounded edges that engage with matching sprockets. They offer a smooth and quiet operation, making them suitable for applications where noise reduction is desired, such as timing drives in engines, power tools, and office equipment.
  • Leaf Chains: Leaf chains consist of interleaved link plates and pins. They are known for their high tensile strength and resistance to fatigue, making them suitable for heavy-duty applications such as forklifts, cranes, and construction machinery.
  • Double-Pitch Chains: Double-pitch chains have twice the pitch length of standard roller chains, resulting in larger gaps between the links. They are commonly used in applications where slower speeds and lighter loads are required, such as conveyor systems.
  • Engineered Chains: Engineered chains are designed for specific applications and operating conditions. They include specialty chains such as corrosion-resistant chains, high-temperature chains, food-grade chains, and chains designed for harsh environments. These chains are tailored to meet the unique requirements of industries such as food processing, automotive manufacturing, and chemical processing.
  • Drag Chains: Drag chains, also known as cable carriers or energy chains, are used to manage and protect cables, hoses, and other fluid or electrical lines in moving applications. They provide a flexible and enclosed pathway for these lines, ensuring safe and reliable operation in machinery such as robotics, automated equipment, and machine tools.
  • Timing Chains: Timing chains are designed specifically for synchronizing the movement of engine components in internal combustion engines. They have precise tooth profiles that engage with corresponding teeth on the sprockets, ensuring accurate valve timing and engine performance.

Each type of mechanical chain has its unique design, construction, and characteristics suited for specific applications. When selecting a mechanical chain, factors such as load capacity, operating conditions, speed, and environmental factors should be considered to ensure optimal performance and longevity.

It is important to follow the manufacturer’s recommendations regarding installation, lubrication, and maintenance to ensure the proper functioning and extended service life of the mechanical chain. Regular inspection, lubrication, and tension adjustment, if necessary, are essential for maintaining optimal performance and minimizing wear.

In summary, the different types of mechanical chains available include roller chains, silent chains, leaf chains, double-pitch chains, engineered chains, drag chains, and timing chains. Each type is designed to fulfill specific requirements in terms of load capacity, noise reduction, corrosion resistance, precision timing, or cable management. Choosing the right type of mechanical chain for a particular application is crucial for ensuring efficient power transmission, reliable operation, and extended chain life.

China Professional Transmission Drive Mechanical Industrial Standard Conveyor Silent Motor Bush Cogs Stainless Steel Roller Duplex Engineering Cast Special Leaf Chain  China Professional Transmission Drive Mechanical Industrial Standard Conveyor Silent Motor Bush Cogs Stainless Steel Roller Duplex Engineering Cast Special Leaf Chain
editor by CX 2023-09-21

China wholesaler Transmission Drive Bush Roller Duplex Engineering Mechanical Industrial Standard Conveyor Chain

Product Description

Model NO. 06C/08A/10A/12A/16A/20A/24A/28A/32A/40A/06B/08B/10B/12B/16B/20B/24B/28B/32B/40B-1/2/3
Heavy duty
Chain Model Roller Chains
Structure (for Chain) Roller Chain
Specification GB/T, DIN, ANSI, ISO, BS, JIS.
Origin HangZhou, ZheJiang
Color Solid Color
Chain Color Customized

Our company

Wolff Chain Co. is 1 of the professional chain manufacturers in China. We focus on reseaching, manufacturing and trading of the chain drive with famous brands — “DOVON” and “DECHO”. We supply OEM services for many famous enterprises such as SUZUKI, XIHU (WEST LAKE) DIS., FAW, AGCO, JUMING as well. 

Wolff mainly producing the Transmission chains,Conveyor chains,Dragging Chains,Silent chains,Leaf chains,Roller chains,Special chain and many other series of chain products. Our technicians a have improved the chains quality to the world-level. High quality material selection, powerful and precise heat-treatment technology and excellent assembly methods ensure Wolff chains meet the tough and strict requirements for machines and vehicles. 

All of our products completely conform to the international standard such as ISO\DIN\ANSI\BS\JIS, etc. Wolff has been successfully certified by ISO9001 Quality Management System,SGS inspection and BV inspection. Wolff chains can be widely applied to many industries including automobile, motorcycle, forklift, wood processing machine, constructure machine, packing machine, food machine,tobacco machine and agricultural equipments. Wolff chains are popular in America,South America,Europe,Middle East, South East Asia and Africa markets.

Our workshop

Our certification

Welcome to our exhibition

FAQ

Q1. What is your terms of packing?
A: Generally, we pack our goods in single color box. If you have special request about packing, pls negotiate with us in advance, we can pack the goods as your request.

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages 
before you pay the balance. Other payments terms, pls negotiate with us in advance, we can discuss.

Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.

Q4. How about your delivery time?
A: Generally, it will take 25 to 30 days after receiving your advance payment. The specific delivery time depends 
on the items and the quantity of your order.

Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and 
the courier cost.We welcome sample order.

Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery

Q8: How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, 
no matter where they come from.

Shipping Cost:

Estimated freight per unit.



To be negotiated
Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Food Machinery, Marine, Mining Equipment
Surface Treatment: Oil Blooming
Samples:
US$ 0/Piece
1 Piece(Min.Order)

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Order Sample

Customization:
Available

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Customized Request

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 is the maximum load capacity of a mechanical chain?

The maximum load capacity of a mechanical chain depends on several factors, including the chain design, material, size, and configuration. Each type of mechanical chain has its own load capacity rating, which is determined by the manufacturer based on extensive testing and analysis. It is important to consult the manufacturer’s specifications and guidelines to determine the specific load capacity for a particular mechanical chain.

Typically, the load capacity of a mechanical chain is expressed in terms of its maximum allowable tension or working load. This is the maximum force or load that the chain can withstand without experiencing excessive wear, deformation, or failure. The load capacity of a mechanical chain is influenced by factors such as:

  • Chain material and construction: Different materials, such as steel, stainless steel, or plastic, have varying load-bearing capabilities.
  • Chain size and pitch: Larger chain sizes often have higher load capacities compared to smaller sizes.
  • Chain configuration: The type of chain, such as roller chain, silent chain, or leaf chain, can affect its load capacity.
  • Operating conditions: Factors like speed, temperature, and environmental conditions can influence the chain’s load capacity.

It is important to note that exceeding the maximum load capacity of a mechanical chain can lead to premature wear, chain elongation, sprocket wear, and potential chain failure, which can result in equipment damage or personal injury. Therefore, it is crucial to carefully consider the load requirements of your application and select a mechanical chain that can safely handle the anticipated loads.

For accurate and reliable load capacity information, refer to the manufacturer’s documentation, technical specifications, or consult with their engineering or customer support team. They can provide detailed load capacity charts and guidelines specific to their mechanical chain products.

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 wholesaler Transmission Drive Bush Roller Duplex Engineering Mechanical Industrial Standard Conveyor Chain  China wholesaler Transmission Drive Bush Roller Duplex Engineering Mechanical Industrial Standard Conveyor Chain
editor by CX 2023-09-05

China OEM Transmission Drive Bush Roller Duplex Engineering Mechanical Industrial Standard Conveyor Chain

Product Description

Model NO. 06C/08A/10A/12A/16A/20A/24A/28A/32A/40A/06B/08B/10B/12B/16B/20B/24B/28B/32B/40B-1/2/3
Heavy duty
Chain Model Roller Chains
Structure (for Chain) Roller Chain
Specification GB/T, DIN, ANSI, ISO, BS, JIS.
Origin HangZhou, ZheJiang
Color Solid Color
Chain Color Customized

Our company

Wolff Chain Co. is 1 of the professional chain manufacturers in China. We focus on reseaching, manufacturing and trading of the chain drive with famous brands — “DOVON” and “DECHO”. We supply OEM services for many famous enterprises such as SUZUKI, XIHU (WEST LAKE) DIS., FAW, AGCO, JUMING as well. 

Wolff mainly producing the Transmission chains,Conveyor chains,Dragging Chains,Silent chains,Leaf chains,Roller chains,Special chain and many other series of chain products. Our technicians a have improved the chains quality to the world-level. High quality material selection, powerful and precise heat-treatment technology and excellent assembly methods ensure Wolff chains meet the tough and strict requirements for machines and vehicles. 

All of our products completely conform to the international standard such as ISO\DIN\ANSI\BS\JIS, etc. Wolff has been successfully certified by ISO9001 Quality Management System,SGS inspection and BV inspection. Wolff chains can be widely applied to many industries including automobile, motorcycle, forklift, wood processing machine, constructure machine, packing machine, food machine,tobacco machine and agricultural equipments. Wolff chains are popular in America,South America,Europe,Middle East, South East Asia and Africa markets.

Our workshop

Our certification

Welcome to our exhibition

FAQ

Q1. What is your terms of packing?
A: Generally, we pack our goods in single color box. If you have special request about packing, pls negotiate with us in advance, we can pack the goods as your request.

Q2. What is your terms of payment?
A: T/T 30% as deposit, and 70% before delivery. We’ll show you the photos of the products and packages 
before you pay the balance. Other payments terms, pls negotiate with us in advance, we can discuss.

Q3. What is your terms of delivery?
A: EXW, FOB, CFR, CIF.

Q4. How about your delivery time?
A: Generally, it will take 25 to 30 days after receiving your advance payment. The specific delivery time depends 
on the items and the quantity of your order.

Q5. Can you produce according to the samples?
A: Yes, we can produce by your samples or technical drawings. We can build the molds and fixtures.

Q6. What is your sample policy?
A: We can supply the sample if we have ready parts in stock, but the customers have to pay the sample cost and 
the courier cost.We welcome sample order.

Q7. Do you test all your goods before delivery?
A: Yes, we have 100% test before delivery

Q8: How do you make our business long-term and good relationship?
1. We keep good quality and competitive price to ensure our customers benefit ;
2. We respect every customer as our friend and we sincerely do business and make friends with them, 
no matter where they come from.

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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 is the maximum load capacity of a mechanical chain?

The maximum load capacity of a mechanical chain depends on several factors, including the chain design, material, size, and configuration. Each type of mechanical chain has its own load capacity rating, which is determined by the manufacturer based on extensive testing and analysis. It is important to consult the manufacturer’s specifications and guidelines to determine the specific load capacity for a particular mechanical chain.

Typically, the load capacity of a mechanical chain is expressed in terms of its maximum allowable tension or working load. This is the maximum force or load that the chain can withstand without experiencing excessive wear, deformation, or failure. The load capacity of a mechanical chain is influenced by factors such as:

  • Chain material and construction: Different materials, such as steel, stainless steel, or plastic, have varying load-bearing capabilities.
  • Chain size and pitch: Larger chain sizes often have higher load capacities compared to smaller sizes.
  • Chain configuration: The type of chain, such as roller chain, silent chain, or leaf chain, can affect its load capacity.
  • Operating conditions: Factors like speed, temperature, and environmental conditions can influence the chain’s load capacity.

It is important to note that exceeding the maximum load capacity of a mechanical chain can lead to premature wear, chain elongation, sprocket wear, and potential chain failure, which can result in equipment damage or personal injury. Therefore, it is crucial to carefully consider the load requirements of your application and select a mechanical chain that can safely handle the anticipated loads.

For accurate and reliable load capacity information, refer to the manufacturer’s documentation, technical specifications, or consult with their engineering or customer support team. They can provide detailed load capacity charts and guidelines specific to their mechanical chain products.

China OEM Transmission Drive Bush Roller Duplex Engineering Mechanical Industrial Standard Conveyor Chain  China OEM Transmission Drive Bush Roller Duplex Engineering Mechanical Industrial Standard Conveyor Chain
editor by CX 2023-08-18

China factory Mechanical Chain Senqcia Chain 80 A Series Short Pitch Precision Simplex Roller Chains and Bush Chains with Attachments

Product Description

A Series Short pitch Precision Simplex Roller Chains & Bush Chains

ISO/ANSI/ DIN
Chain No.
China
Chain No.
Pitch
P
mm
Roller diameter

d1max
mm

Width between inner plates
b1min
mm
Pin diameter

d2max
mm

Pin length Inner plate depth
h2max
mm
 Plate  thickness

Tmax
 mm

Tensile strength

Qmin
kN/lbf

Average tensile strength
Q0
kN
Weight per meter
q  
 kg/m
Lmax
mm
Lcmax
mm
80 16A-1 25.4000 15.88 15.75 7.92 32.70 35.00 24.00 3.25 56.70/12886 74.3 2.60

*Bush chain:d1 in the table indicates the external diameter of the bush

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.

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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Standard or Nonstandard: Standard
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Surface Treatment: Polishing
Samples:
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Customization:
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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 are the cost considerations when purchasing a mechanical chain?

When purchasing a mechanical chain, there are several cost considerations to take into account. These include the initial cost of the chain, ongoing maintenance and replacement costs, and the overall value it provides to your application. Here are some detailed cost considerations:

  • Initial Cost: The initial cost of a mechanical chain depends on various factors such as chain type, size, material, and quality. Higher-quality chains may have a higher upfront cost but often offer better durability and longer service life.
  • Maintenance Costs: Consider the maintenance requirements and associated costs when evaluating the overall cost of a mechanical chain. Regular lubrication, tension adjustments, and periodic inspections are necessary for proper chain performance and longevity. The cost of lubricants, maintenance tools, and labor should be factored into the total cost of ownership.
  • Replacement Costs: Mechanical chains experience wear over time and may require replacement after reaching their service life or if they become damaged or worn beyond acceptable limits. Consider the frequency and cost of chain replacements when assessing the overall cost.
  • Application-Specific Costs: Evaluate the specific requirements of your application. If the application demands high load capacity or specialized chain features, it may involve additional costs. Customization, special coatings, or specific certifications may also influence the overall cost.
  • Total Cost of Ownership: Assess the long-term value and total cost of ownership rather than focusing solely on the initial purchase price. A higher-quality chain that offers better durability, longer service life, and lower maintenance requirements can result in reduced downtime, fewer replacements, and lower overall costs in the long run.

It is recommended to consider the overall value and total cost of ownership when evaluating the cost of a mechanical chain. Consult with reputable suppliers or manufacturers who can provide guidance on selecting the right chain based on your application requirements and budget constraints.

China factory Mechanical Chain Senqcia Chain 80 A Series Short Pitch Precision Simplex Roller Chains and Bush Chains with Attachments  China factory Mechanical Chain Senqcia Chain 80 A Series Short Pitch Precision Simplex Roller Chains and Bush Chains with Attachments
editor by CX 2023-07-20

China factory Mechanical Chain Senqcia Chain 80 A Series Short Pitch Precision Simplex Roller Chains and Bush Chains with Attachments

Product Description

A Series Short pitch Precision Simplex Roller Chains & Bush Chains

ISO/ANSI/ DIN
Chain No.
China
Chain No.
Pitch
P
mm
Roller diameter

d1max
mm

Width between inner plates
b1min
mm
Pin diameter

d2max
mm

Pin length Inner plate depth
h2max
mm
 Plate  thickness

Tmax
 mm

Tensile strength

Qmin
kN/lbf

Average tensile strength
Q0
kN
Weight per meter
q  
 kg/m
Lmax
mm
Lcmax
mm
80 16A-1 25.4000 15.88 15.75 7.92 32.70 35.00 24.00 3.25 56.70/12886 74.3 2.60

*Bush chain:d1 in the table indicates the external diameter of the bush

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.

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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mechanical

How to calculate the power requirements for a mechanical chain drive?

Calculating the power requirements for a mechanical chain drive involves considering several factors related to the application and the chain drive system. Here’s a step-by-step process:

  1. Determine the operating conditions: Identify the specific operating conditions of the chain drive system, including the speed of the drive, the torque required to transmit, and the desired service life of the chain.
  2. Calculate the required torque: The torque requirement is typically derived from the load being transmitted by the chain drive. Consider the rotational speed and the load characteristics to calculate the required torque.
  3. Select a suitable chain type: Based on the torque requirement and the operating conditions, choose an appropriate mechanical chain that can handle the load and transmit power efficiently.
  4. Consider the efficiency: Mechanical chain drives have efficiency ratings that indicate how effectively they transfer power. Consider the efficiency of the chosen chain drive system in your calculations.
  5. Calculate the power requirements: Multiply the required torque by the rotational speed to calculate the power required for the mechanical chain drive. The power is given by the formula:

Power (in watts) = Torque (in Newton-meters) x Speed (in radians per second)

Alternatively, if the rotational speed is given in revolutions per minute (RPM), convert it to radians per second using the formula:

Speed (in radians per second) = Speed (in RPM) x (2π/60)

By following these steps and considering the specific operating conditions and requirements of the chain drive system, you can accurately calculate the power requirements for a mechanical chain drive.

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.

China factory Mechanical Chain Senqcia Chain 80 A Series Short Pitch Precision Simplex Roller Chains and Bush Chains with Attachments  China factory Mechanical Chain Senqcia Chain 80 A Series Short Pitch Precision Simplex Roller Chains and Bush Chains with Attachments
editor by CX 2023-07-19

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chain

Different types of drive chains

Drive chains are an important part of many different types of machinery. In this article, we’ll cover a variety of different types, from square links to engineered steel. From there, we’ll discuss different types of chains, such as double and leaf chains. Let’s take a closer look at each one. Once you know what kind of chain you’re looking for, you can make a buying decision. If you’re not sure where to start, read on to learn more about these types of chains, what to look for when choosing, and how to choose the right chain for your specific application.

Engineering Steel Chain

Engineering steel chains are widely used in conveyors, bucket elevators, tensioning links, transmission chains, etc., and have the characteristics of high strength, low friction, and good shock resistance. Early models of these chains were developed for difficult-to-convey applications. They were originally made of all-steel components with flanged rollers made of cast iron. They then increase in size, strength, and spacing in response to the heavy-duty requirements of the industry.
Today, these chains are used in a wide variety of applications, including tough oil drilling operations and forklifts. They offer excellent durability and high power transfer and are available in a variety of materials. They are also ideal for harsh environments such as harsh oil drilling. Their high-strength steel construction means they can handle harsh operating conditions. Their durability is an essential feature of any chain, and CZPT Chains offers a full line of engineered steel chains to meet your exact specifications.
A drive chain made of engineered steel consists of several components: links, pin joints, and sprockets. This allows them to carry heavy loads with minimal stretch. Due to its internal mechanical advantage, the chain runs around the sprockets with almost 100% efficiency. Also, the chain is made of special steel that can withstand certain conditions. They are available in different alloys and grades. If you have any questions, please feel free to contact us.
Roller chain wear is a major problem for conveyor and drive chains. In these cases, the rollers of the chain are more prone to wear than the bushings, so lubrication is essential. Many chains are designed to work with little or no lubrication. Finally, material selection is an important factor in the design of engineered steel conveyor chains. These factors will help ensure that the chain stays in good shape.

Conveyor Chains with Square Links

There are two basic types of conveyor chains. The first is the square chain, commonly used in cranes and hoists. It’s cheap to manufacture but more prone to overload. The second is a chain that uses hook joints or detachable links. These are used for short-term power transmission and have a lubricating effect. Usually, they are made of malleable iron but can be more expensive.
Another type of chain is the removable steel chain. For moderate loads, this is an easy-to-install option. The closed end of the tab should face the sprocket. It is very important to maintain the alignment of the chain relative to the sprockets. The chain should be adjusted to suit the load before installation. It is important to keep the chain lubricated to prolong its life.
Steel chains offer a wider selection of materials and heat treatments. This chain is also more accurate than its counterpart. Steel bushing chains are less expensive but require more frequent lubrication. Steel roller chains are often used for long conveyor centers or high loads. However, lower friction requirements require lower strength chains. This means that chains with square links are a better choice for smaller conveyors. But this style has its drawbacks.
Bushing chains are made of steel and are an excellent alternative for small-scale applications. The pins are silent and prevent tooth damage. Bushed roller chains are also used to a certain extent as conveyor chains. However, the main advantage of the bushing roller chain is that it does not make any noise at all. Bushed roller chains are made of alloy steel and are suitable for very low-speed applications.
chain

double chain

Double-strand roller chain, also known as a double-strand, consists of two rows of single-strand links. It has high impact strength, low weight, and a small form factor. Duplex roller chains are manufactured using CZPT technology, which uses solid rollers to improve sprocket tooth rotation and reduce shock loads. During the manufacturing process, the metal is heat-treated to increase strength and reduce corrosion.
A single chain is designed for a single sprocket, while a double chain consists of two identical chains connected side by side. Double chains are more durable than simple chains because double rollers contain roller bearings, pins, and other components. Simplex drive chains can handle high loads, while duplex drive chains are designed for medium-duty applications.

leaf chain

Blade chains are used in reciprocating devices such as forklifts. They are also used in machine tools for counterweight chains. Leaf chains come in a variety of lengths, usually with female or male ends. Leaf chains can be manufactured in even or odd pitches and are ideal for lifting and balancing. This article will introduce some key uses of leaf chains in drive chains. Additionally, we’ll discuss how they are made and how they behave in applications.
Most drive chains today are made from leaf chains. These chains are designed to increase the strength of the chain. However, they are less expensive than other types of chains. You can also purchase specialized leaf chains for certain applications. CZPT Chain also offers custom leaf chains for your unique needs. Leaf chains are commonly used in forklifts, material handling, and lifting applications. They are usually made from high-quality components. The BL1688 Leaf Chain has 8 x 8 laces and is sold in 10-foot boxes or 25- to 100-foot reels. The leaf chain can be cut as needed.
When selecting a leaf chain for a specific application, consider the minimum tensile strength of the chain. The minimum breaking strength must be high enough to protect the worker or machine, but must also be legal for the type of machine. Most manufacturers publish this minimum strength requirement. To make the most durable leaf chain, design engineers must consider the ISO4347 standard when choosing the right leaf chain. Leaf chain manufacturers tend to exceed international standards by about 20%.
chain

roller chain

Roller chains are made from a variety of materials. Some common materials include steel and stainless steel. The most suitable material depends on cost, environmental conditions, and horsepower transmission design. Chain manufacturers can optimize the material for the intended use. Depending on its size, spacing, and special construction techniques, it can be made lighter or heavier. This is an advantage for applications in noise-sensitive environments. Below are some examples of common uses for roller chains.
The wear of the components in a roller chain is an unavoidable part of its operation. The amount of elongation depends on factors such as lubrication, load, and the frequency of articulation between the pin and bushing. Manufacturing critical wear parts require careful attention to detail. Proper raw materials, manufacturing, and assembly are critical to product performance and longevity. If these components aren’t of high quality, they won’t last as long as the chain should.
The industry recommends measuring the wear elongation of the roller chain to determine when it needs to be replaced. Proper safety procedures must be used to measure chain tension. The tight span of the chain shall be measured by applying the measuring load specified by ANSI. A correctly measured roller chain is safe to use. For motorcycles, the chain is bigger and stronger. Often, toothed belts are replaced by shaft drives because they are less noisy and require less maintenance.
Tensile strength is the most commonly used measurement method for roller chains. This measurement represents the amount of load the chain can withstand before it breaks. Fatigue strength is another measure of durability. Fatigue strength measures how long a roller chain can withstand long-term use before failing. These two measurements are closely related and maybe the same or different. In addition to tensile strength, fatigue strength is a useful factor to consider when purchasing a chain.

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chain

What is a roller chain?

What is a roller chain? A roller chain is a transmission system that transmits power from one shaft to another. Internal lubricant helps chains last longer and are interchangeable. Chains are usually made of carbon or alloy steel. Stainless steel is sometimes used in food processing machinery or in environments where lubrication is problematic. Brass and nylon are also sometimes used. If you need to slow down the machine, nylon chains can be used.

Roller chains are used to transmit power from one shaft to another

Generally speaking, the life of a roller chain is limited by three main factors: wear, corrosion, and fatigue. These can be minimized by following some simple guidelines. For optimum performance, the roller chain must be lubricated. Proper lubrication reduces friction and extends product life. Remember that corrosion and wind resistance can adversely affect lubrication, so protect the product properly.
A chain is a mechanical device used to transmit power from one shaft to another. The chain consists of a series of steel plates called bushings. Bushings are attached to the roller chain by pins or bushings. The block and bushing are held together by pins or bushings C riveted to the outer link D. The chain is also attached to the sprocket and bucket by pins or hooks. Chain pitch is measured between hinge centers, usually denoted p.
There are three types of chains: single-strand standard series, multi-strand standard series, and silent chain. Single strand chains are the most common type and cover a wide range of drive loads. Multi-strand chains provide greater power capacity without increasing chain pitch or line speed. An inverted tooth chain is a variant of a single-strand chain that eliminates the noise caused by pitch-related friction.
The inner and outer plates of the roller chain drive are made of steel. The rollers are positioned evenly between the chain links and are fastened to the sprockets. In addition, the rollers can rotate freely within the bushing. The chain links are arc-shaped and mesh with the sprocket teeth to transmit power through the chain.
Chain drives are another common way of transmitting mechanical power. These are the simplest forms of power transmission and are used on conveyor belts and other low-speed applications. The chain wraps around the sprocket and passes through the sprocket whose teeth mesh with the links. This mechanism transfers mechanical power from one shaft to another, increasing speed.

They are interchangeable

There are many different types of roller chains, but most are made of steel. Although they have their own advantages and features, they are generally interchangeable. You can buy different kinds of roller chains from domestic and foreign manufacturers, and you can choose the one that best suits your needs. Bearing Services can help you choose the right bearing for your application needs and budget. Here are some important things to consider before buying a roller chain. Here are some tips to make it easier for you to buy the right type of chain.
When choosing the right roller chain, be sure to consult the available size charts. Depends on how much chain you need to move the load you need to move. Remember that roller chains can be manufactured to fit a variety of machines and must meet your specific needs. Also, the chain should be long enough for the machine you are using. Make sure to buy a chain made of high-quality materials.
Double pitch roller chains have a flat top surface and are used in many different conveying applications. Double-pitch load-carrying roller chains, also known as oversized roller double-pitch chains, have rollers that extend beyond the sidebars to carry products. Double pitch drive series roller chains are used in elevators, long conveyor drives, agricultural machinery, and commercial sprinkler systems.
The tensile strength of a roller chain is a key factor to consider before purchasing a chain. The tensile strength of a chain is a function of the maximum force the chain can withstand before breaking. The three different types of tensile strength represent the force a chain can withstand without breaking. Each chain also has different strengths that can determine the type of chain you need.
The outer and inner links of the roller chain are designed for bearings. This allows the chain to be paired or unpaired with its internal links. The outer link has a pin, and the inner and outer pins are press-fit into the connecting plate. These links are usually made of steel and have a tensile strength of about 20 times their weight. The fatigue strength of two-pitch offset links is the same as that of the base chain.

They reduce wear with internal lubricants

In a roller chain, the pins and bushings rotate inside the chain without lubricant on the outside. They are in contact with the teeth of the sprocket and can easily wear out if not lubricated. The plates that connect the links and pivot about the pins can also rub against each other and cause wear. This is where lubricants come in handy. Without lubricant, the bare metal of the plate and bushing would rub against each other.
The lubricant should have the appropriate viscosity to penetrate critical internal surfaces and form an effective oil film. Recommended viscosities are listed in Table 1. Lubricants must be clean and non-corrosive. For roller chains, a good quality non-clean petroleum base oil is sufficient. While defoamers are not required, other additives such as antioxidants and extreme pressure inhibitors may be useful. However, impure oils should be avoided due to the risk of damage.
The shape of the spray head 10 overlaps with a conventional drive chain 12. The drive chain includes a plurality of rollers 24 and roller link plates 26. Each roller includes a roller pin 29 and is connected to a pair of pin link plates 28. Most drive chains have critical wear points on the sides of the roller pins 29. The shape of the spray head 10 prevents overspray onto the central portion of the roller.
In addition to preventing wear, these chains have unique specifications. Manufacturer CZPT requires raw material suppliers to certify that their products meet standards set by the American Society of Mechanical Engineers (ASME). CZPTs do not accept uncertified raw materials. For safety, the machine must be turned off before attempting to measure the chain. After the system is shut down, the measurement process should be completed in accordance with safety procedures.
General spray oil has lubricating properties, but is not as good as other types of chain lubricants. These are typically used for rust protection and include antioxidant chemicals. Generally, they are inexpensive and widely available in retail stores. However, they have the disadvantage of being very penetrating and difficult to apply evenly. Oil cannot stay on the chain as it spins, which can accelerate wear and corrosion.
chain

They can be used to speed up or slow down machines

Typically, roller chains are chains used to move mechanical system components. Unlike belts, roller chains can be used to speed up or slow down a machine. The main difference between belts and roller chains is the lubrication process. Belts use lubrication to help them move at a constant speed, but should not exceed the critical speed of the roller chain. This critical speed is not easy to determine and lubrication is critical to its life.
A roller chain is a chain consisting of a steel bushing that holds the inner plate A and pins C together. Pin C is riveted to outer link D, while roller R surrounds each bushing B. The teeth of the sprocket are supported on the rollers. They spin freely on pins and bushings, reducing friction.
The chains can be single-stranded, double-stranded, or multi-stranded. The rated power capacity of the single strand chain can meet various drive load requirements. Multi-strand chains provide higher power capacity without increasing chain pitch or line speed. The silent chain, also known as the inverted tooth chain, consists of a series of toothed chainplates. The pins of the chain are pressed into the wide ends of the sidebars and outer links.
Although roller chains are a common mechanical component, they can fail under certain conditions. The most common cause of excessive wear is wrong to load sizing. Each manufacturer sets a maximum workload for its product. A chain that is too small for the load carried will not run smoothly and may cause premature failure. Chains can also fail due to rust or improper maintenance.
There are many ways to choose the correct size roller chain. The easiest way to choose the right one is to use a horsepower chart to determine the speed of the motor. RPM will determine the size of the chain and the number of teeth on the drive sprocket. Conveyor chains offer a variety of options to move products horizontally or vertically, even around bend radii.

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editor by Cx 2023-07-04

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Design Number: L969
Jewelry Main Substance: ALLOY
Gender: Men’s, Unisex, Women’s
Jewelry Sort: Rings
Rings Kind: Adjustable Ring
Style: Relaxed/Sporty
Inlay technological innovation: Channel location

Specification

itemvalue
Rings
Certificate SortNone
PlatingResin
GShapepatternGeometric
StyleTRENDY
Religious TypeMicro insert
StyleTrendy
MaterialResin
Rings KindFashion
occasionPromise rings
boho ringring jewelry
10MOQ10pcs
StoneNone
OEM/ODMAcceptable
Shipping MethodEXPRESS Shipping and delivery
Packing & Shipping and delivery To better ensure the protection of your merchandise, skilled, environmentally pleasant, convenient and effective packaging solutions will be provided. Business Profile .Our firm is a producer of fashion components with well-geared up tests facilities and robust specialized drive.With a widerange, excellent high quality, reasonable charges and elegant types, our items are thoroughly utilized in Hat, Socks, Bras and etc.Ourproducts are widely acknowledged and dependable by consumers and can satisfy continuously altering economic and social wants.We welcome newand aged buyers from all walks of daily life to contact us for foreseeable future business associations and mutual accomplishment! FAQ 1. who are we?We are dependent in ZheJiang , Very good Adiabat 4hp 8Bar Piston Air Compressor For Mining 400LMin 950Rpm Speranpiston Air Compressors Head China, start off from 2019,offer to Oceania(fifteen.00%),Africa(fifteen.00%),Southeast Asia(fifteen.00%),EasternEurope(15.00%),South America(15.00%),North The usa(15.00%),Mid East(ten.00%). There are whole about 5-10 individuals in our workplace.2. how can we assure top quality?Often a pre-generation sample prior to mass productionAlways ultimate Inspection before shipment3.what can you get from us?Hat,Bra,Socks, Drop delivery Mini Moveable Tire Inflator – Wireless Air Compressor Pump for Car Bicycle Motorbike Tires and Other Inflatables Hairband,Bag4. why ought to you purchase from us not from other suppliers?Our organization is a manufacturer of trend components with well-equipped screening services and robust complex drive.With a widerange, good quality, realistic costs and fashionable patterns, our items are extensively used in Hat, Socks, Hairband.5. what companies can we offer?Accepted Delivery Phrases: FOB,EXW,DDP;Accepted Payment Forex:USD,EURAccepted Payment Type: T/TLanguage Spoken:English, Turning organizations Personalized machining distinct shaft goods on device pin for toy robot Chinese

chain

Three important aspects of the drive chain

One of the advantages of a drive chain is that it is relatively light. It sends nearly all of the engine’s power to the rear wheels, even if it loses some power along the way. Engine power on a dyno is different than on the road. Therefore, the chain is the most efficient way to transmit power to the rear wheel. Let’s look at three important aspects of the drive chain. Here are some facts about them.

roller chain drive

When choosing a roller chain drive, consider your application and how much horsepower your system requires. For applications requiring more horsepower, a multi-strand drive is an option. If your horsepower is limited, single-strand drives are a good choice. Otherwise, you may need to choose the smallest pitch chain. However, this may not always be possible. You should also consider sprocket size. In many cases, choosing a smaller chain pitch can increase the number of options.
While proper lubrication and maintenance can last a roller chain drive for years, regular inspections are essential to prolonging its life. After the drive has been operating for 100 hours, a thorough inspection every 500 hours is recommended. During this inspection, look for key elements such as 3% elongation and chain wear. If the chain is not preloaded, elongation will happen very quickly. In either case, the industry-recommended 3% elongation will be achieved faster.

flat top chain

The flat-top chain system consists of hinge pins that support the chain to ensure efficient conveying. There are different types of hinge pins available, namely single and double. The single hinge pin is suitable for short chainplates and lightly loaded products. Dual hinge pins provide increased stability and load capacity. Flat top drive chains can be used in many different industries. In this article, we will learn about some important properties of flat-top chains.
Plastic flat top chains can transport medium to large workpiece pallets. They have a circular arc function that enables continuous drive combinations involving curved circular arcs. Plastic flat top chains are also recommended for workpiece pallets with PA wear pads. Steel flat-top chains can withstand surface loads up to 1.5 kg/cm, and HD profiles are suitable for steel chains. This chain is used in a variety of applications, including packaging machines.

mute chain

There are several types of mufflers that can silence your drive chain. One is the Ramsay silent chain, also known as the inverted tooth chain. These chains can be custom designed for specific needs. Exclusive Australian distributor of CZPT products that can help you find the most effective and affordable silent chain. In addition to silent chains, CZPT also manufactures sprockets and other hardware required for the drive.
Another type of mute chain is the CZPT chain. CZPT chains have involute teeth, while the ANSI standard specifies straight teeth. The advantage of silent chains is reduced noise and vibration output, and wider chains are more economical than multi-strand roller chains. The downside of silent chains is that they wear out quickly without lubrication.
The mute chain consists of two main parts, the pin and the plate. The pins are rotated in the same direction and positioned so that they can only engage the sprocket from one direction. Therefore, mute links are not recommended for reverse applications. To find out if your chain will work in reverse, consult the manufacturer’s catalog. CZPT chain.

conveyor chain

Drive chains and conveyor chains are essentially the same, but they are very different. The transmission chain is mainly used to transport heavy objects, and the conveyor chain is used to transport light objects. On the other hand, drive chains are usually driven by belts. Both types of chains can be used for the same purpose. This article will cover both types of chains. You can use them to convey various types of materials and products.
There are some differences between belts and chains, but both types can perform similar functions. The drive chain is used to drive the rollers, while the belt is used to move the object horizontally. The drive chain usually drives the rollers that move the conveyor belt. For a wide range of applications, conveyors and drive chains can be customized to meet specific needs. Here are some common uses of these two chains:
chain

time chain

Timing chains fail for two reasons: complete damage and fatigue. Fatigue occurs when a timing chain reaches its breaking strength, and eventually, failure occurs when a timing chain exceeds its design life and suffers mechanical damage. Most timing chain failures are a combination of mechanical failure and fatigue. Chain chatter, engine misfires, and VVT systems can accelerate chain fatigue. If these causes of premature timing chain failure are not addressed, the timing chain could be permanently damaged.
In the past, the timing chain was the only drive chain available. Timing belts are a quieter alternative, but they are prone to failure and damage to valves and the engine. In recent years, OEM manufacturers have begun to return to the OHC/DOHC drive chain of the timing chain. This type of drive chain has many advantages, including the ability to simulate knock sensor vibrations. Additionally, the chain has better NVH performance, making it the drive chain of choice for automakers.

Timing Chains in Internal Combustion Engines

Internal combustion engines use timing chains to control intake and exhaust valves. The chain turns the camshaft at the right time and coordinates the movement of the valves on the cylinder head. This in turn allows the engine to generate power. The timing chain also controls the position of the intake and exhaust valves, ensuring that fuel and exhaust gases are expelled at the correct time. Incorrect timing in the vehicle can lead to misfires and other problems.
Chain drives in internal combustion engines are a common feature of many modern cars. It transmits rotational force from the crankshaft to the camshaft, which in turn controls the opening and closing of valves. The chain is lubricated with oil to prevent wear. Therefore, timing chains are often used in high-capacity engines, including trucks and motorcycles. But they do have some drawbacks.
A weakened timing chain can cause the engine to misfire, causing it to skip gears and lose coordination. A clicking sound may also indicate a problem. If the chain is too loose, it can also cause the engine to stall. If the chain is too loose, metal chips will appear in the oil. A clicking sound may also be heard when the engine is running. If you hear the engine stalling, it’s likely that the timing chain is the culprit.

Silent chains in internal combustion engines

The pitch difference between the drive sprocket and the silent chain reduces resonance sound, meshing shock, and accelerated wear at the chain and sprocket interface. The difference in pitch between the drive sprocket and the silent chain determines the loudness of the sound, and the system described here helps reduce it. The present invention is suitable for power transmission in internal combustion engines.
The earliest designs for silent chains come from the 1500s when Leonardo da Vinci sketched them. The SS Britannia propels the boat across the Atlantic using huge silent chains. By the mid-19th century, silent chains were used in nearly all types of industrial applications and as timing chains for early automobile engines. Due to their durability, these chains are durable and have smooth action.
In order to understand the mechanism of frictional losses in chains, various parameters must be considered. Speed, pitch, temperature and tension are the main parameters affecting friction loss. This test uses two types of chains to compare the frictional behavior between these two components. The results show that a single chain with a high pitch can increase the friction torque of another chain with the same pitch. These results provide an important basis for understanding the role of friction torque in internal combustion engines.
chain

lifting chain

Lift chairs are designed to lift heavy objects and can be used with a variety of lifting equipment, including forklifts and cranes. Hoist chains are also used in warehouses and ports of all sizes and consist of a series of pins and plates that mesh with each other to move heavy loads. ​​​CZPT Chain manufactures high-precision lifting chains. Here are some of the benefits of hoist chains for drive chains.
Blade Chain: This type of drive chain has a patented U-profile that turns the flexible chain into a highly stable outer post during the push phase. This design is designed to minimize linkage tangling and provide better pressure transfer. These chains are used for cranes, anchors and straddle carriers. Blade chains are more durable than other types of drive chains and are especially useful in heavy duty applications.
The drive chain is also available in a variety of materials. For example, square link chains are commonly used in cranes and hoists. They are cheap to manufacture but more prone to overloading. Conveyor chains are specially designed for chain conveyor systems. It consists of a series of interconnected rectangular links. Oval links tend to kink and are usually only used at low speeds.

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editor by Cx 2023-07-03