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China OEM Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture

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
15 *03C 4.7625 2.48 2.38 1.62 6.10 6.90 4.30 0.60 1.80/409 2.0 0.08

*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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transmission chain

Can transmission chains be used in marine or offshore applications?

Yes, transmission chains can be used in marine or offshore applications. Here’s a detailed answer to the question:

1. Corrosion Resistance: Transmission chains used in marine or offshore applications are typically made from materials that offer high corrosion resistance, such as stainless steel or specially coated chains. These chains are designed to withstand the corrosive effects of s altwater, moisture, and other harsh environmental conditions.

2. Sealing and Protection: In marine or offshore environments, transmission chains are often equipped with additional sealing and protection measures. This can include seals, covers, or special coatings that provide an extra layer of defense against water, debris, and contaminants.

3. High Load Capacity: Marine and offshore applications often involve heavy-duty operations, such as lifting or pulling heavy loads. Transmission chains used in these applications are designed to handle high loads and provide reliable power transmission.

4. Resistance to Harsh Conditions: Marine and offshore environments can be challenging, with factors like high humidity, extreme temperatures, and exposure to s altwater and abrasive substances. Transmission chains for these applications are engineered to withstand these harsh conditions and maintain their performance and durability.

5. Compliance with Industry Standards: Transmission chains used in marine or offshore applications may need to meet specific industry standards and regulations. These standards ensure that the chains are suitable for the demanding conditions and safety requirements of the marine and offshore industries.

It’s important to select transmission chains specifically designed for marine or offshore applications to ensure reliable and long-lasting performance. Consulting with experts in the field and following manufacturer guidelines for installation, maintenance, and inspection is essential to maximize the effectiveness and lifespan of the transmission chains in these environments.

transmission chain

How does the precision of manufacturing impact the performance of a transmission chain?

The precision of manufacturing plays a crucial role in the performance and reliability of a transmission chain. Here’s a detailed answer to the question:

1. Accurate Chain Pitch: The precision of manufacturing ensures that the chain pitch, which is the distance between consecutive chain links, is consistent and accurate. A precise chain pitch is essential for proper engagement with the sprockets and ensures smooth power transmission.

2. Uniform Chain Link Dimensions: Precise manufacturing ensures that the dimensions of the chain links are uniform throughout the chain. This uniformity is crucial for maintaining proper alignment, load distribution, and engagement with the sprockets.

3. Consistent Roller Diameter: In roller chains, the diameter of the rollers is an important factor in reducing friction and wear. Precise manufacturing ensures that the roller diameter is consistent, allowing for smooth rolling action and efficient power transfer.

4. Straight Side Plates: The side plates of a transmission chain need to be straight and parallel to ensure proper chain alignment and engagement with the sprockets. Precise manufacturing ensures that the side plates are accurately formed, minimizing the risk of misalignment and premature wear.

5. Quality Control and Tolerance Management: Precision manufacturing involves rigorous quality control measures to ensure that the chain components meet the required specifications and tolerances. This helps to maintain the overall integrity and performance of the chain.

6. Reduced Noise and Vibration: A well-manufactured transmission chain with precise dimensions and uniform components results in reduced noise and vibration during operation. This contributes to a quieter and smoother running system, enhancing the overall efficiency and comfort.

7. Enhanced Durability and Lifespan: The precision of manufacturing directly impacts the durability and lifespan of a transmission chain. Accurate dimensions, uniform components, and proper tolerances ensure that the chain can withstand the expected loads, resist wear, and maintain its performance over an extended period.

It’s important to select transmission chains from reputable manufacturers known for their precision manufacturing processes and adherence to quality standards. Proper installation, regular maintenance, and following manufacturer guidelines are also crucial for maximizing the performance and longevity of the transmission chain.

transmission chain

What are the advantages of using stainless steel transmission chains?

Stainless steel transmission chains offer several advantages over chains made from other materials. Here are some key benefits of using stainless steel transmission chains:

  • Corrosion Resistance: Stainless steel chains are highly resistant to corrosion and rust, making them ideal for applications in harsh or corrosive environments. They can withstand exposure to moisture, chemicals, and temperature variations without compromising their performance.
  • Durability and Longevity: Stainless steel chains have excellent durability and a long service life. They are less susceptible to wear and fatigue, ensuring reliable operation even under heavy loads and demanding conditions. This reduces the need for frequent replacements and maintenance, resulting in cost savings over time.
  • Hygiene and Cleanliness: Stainless steel chains are commonly used in industries with strict hygiene requirements, such as food processing, pharmaceuticals, and medical equipment. They are easy to clean and sanitize, resistant to contamination, and can withstand high-temperature washdowns without degradation.
  • High Strength: Stainless steel chains have high tensile strength, allowing them to handle heavy loads and transmit power effectively. This makes them suitable for applications requiring robust and reliable power transmission.
  • Temperature Resistance: Stainless steel chains exhibit good resistance to high and low temperatures. They can maintain their mechanical properties and performance even in extreme temperature environments, making them suitable for applications with temperature variations.
  • Low Maintenance: Due to their excellent corrosion resistance and durability, stainless steel chains require minimal maintenance. They operate reliably with minimal lubrication, reducing the need for frequent inspections and lubrication intervals.

Overall, stainless steel transmission chains provide a reliable and long-lasting solution for applications where corrosion resistance, durability, hygiene, and strength are essential.

China OEM Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture  China OEM Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture
editor by CX 2024-03-26

China high quality Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture

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
15 *03C 4.7625 2.48 2.38 1.62 6.10 6.90 4.30 0.60 1.80/409 2.0 0.08

*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.

 

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

We are not just a manufacturer and supplier, but also an industry consultant. We work pro-actively with you to offer expert advice and product recommendations in order to end up with a most cost effective product available for your specific application. The clients we serve 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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transmission chain

What are the benefits of using a low-noise transmission chain?

Using a low-noise transmission chain in industrial applications offers several advantages. Here’s a detailed answer to the question:

1. Noise Reduction: One of the primary benefits of using a low-noise transmission chain is the reduction in noise levels. These chains are designed with special features and materials to minimize vibrations, impact, and friction-induced noise during operation. This is particularly important in environments where noise reduction is critical, such as in residential areas, offices, or noise-sensitive industries.

2. Improved Workplace Environment: By reducing noise levels, low-noise transmission chains contribute to a more comfortable and productive workplace environment. Excessive noise can lead to employee fatigue, decreased concentration, and increased stress levels. Using low-noise chains helps create a quieter workspace, promoting better working conditions and overall well-being.

3. Compliance with Noise Regulations: In certain industries or regions, there are specific regulations or guidelines regarding acceptable noise levels. Using low-noise transmission chains can help ensure compliance with these regulations, avoiding potential fines or legal issues related to excessive noise emissions.

4. Enhanced Equipment Performance: Low-noise transmission chains are designed to provide smooth and efficient power transmission while minimizing noise generation. The reduction in vibration and impact noise not only improves the comfort of the workplace but also enhances the overall performance of the equipment. It can contribute to better precision, accuracy, and reliability of the machinery, leading to improved product quality and operational efficiency.

5. Extended Equipment Lifespan: Excessive noise and vibration can accelerate wear and tear on machinery components, leading to increased maintenance and premature failure. By using a low-noise transmission chain, the impact on the equipment’s mechanical parts is reduced, resulting in less wear, lower maintenance costs, and extended equipment lifespan.

6. Customer Satisfaction: In industries where noise can affect the end-user experience, such as automotive, consumer electronics, or precision engineering, using low-noise transmission chains can contribute to higher customer satisfaction. Products that operate quietly are often perceived as higher quality and can lead to a positive brand image and customer loy alty.

It’s important to note that the benefits of low-noise transmission chains may vary depending on the specific application and operating conditions. Manufacturers and equipment designers should consider factors such as load capacity, speed, lubrication, and environmental requirements when selecting and implementing low-noise transmission chains.

transmission chain

How does the choice of lubricant impact the performance of a transmission chain?

The choice of lubricant plays a critical role in ensuring the optimal performance and longevity of a transmission chain. Here’s a detailed answer to the question:

1. Reduced Friction and Wear: Lubricants create a protective film between the moving parts of the transmission chain, reducing friction and wear. This helps to minimize metal-to-metal contact and prevent surface damage, extending the chain’s lifespan.

2. Enhanced Efficiency: Proper lubrication reduces energy losses due to friction, improving the overall efficiency of the transmission system. By reducing frictional resistance, the lubricant allows for smoother power transmission, reducing power consumption and increasing system efficiency.

3. Heat Dissipation: Lubricants aid in heat dissipation by absorbing and dissipating heat generated during chain operation. This helps to prevent excessive chain temperature rise, which can lead to accelerated wear, lubricant breakdown, and potential chain failure.

4. Corrosion Protection: Lubricants provide a protective barrier against moisture, humidity, and other corrosive elements. This helps to prevent rust and corrosion, which can weaken the chain and reduce its performance. Choosing a lubricant with anti-corrosion properties is essential, especially in harsh or corrosive environments.

5. Contaminant Removal: Lubricants can help remove contaminants such as dirt, dust, and debris from the chain’s contact surfaces. This prevents abrasive particles from causing premature wear and damage to the chain, ensuring smooth operation and reducing the risk of chain failure.

6. Temperature Stability: Different lubricants have varying temperature stability properties. It is crucial to select a lubricant that can maintain its viscosity and lubricating properties within the operating temperature range of the transmission chain. This ensures consistent lubrication and performance under various temperature conditions.

7. Compatibility: It is important to choose a lubricant that is compatible with the materials used in the transmission chain. Some lubricants may react with certain chain materials, leading to degradation or damage. Ensuring compatibility helps maintain the integrity of the chain and avoids any adverse effects.

8. Lubrication Interval: The choice of lubricant can also affect the lubrication interval, i.e., the frequency at which the chain needs to be relubricated. Some lubricants offer longer-lasting lubrication properties, reducing the maintenance requirements and downtime associated with frequent relubrication.

It is crucial to follow the manufacturer’s recommendations and guidelines regarding lubrication for the specific transmission chain. Regular inspection, monitoring, and proper maintenance practices should be implemented to ensure the chain remains adequately lubricated for optimal performance and longevity.

transmission chain

How do you choose the right transmission chain for a specific application?

Choosing the right transmission chain for a specific application is crucial to ensure optimal performance and longevity. Here are the key factors to consider when selecting a transmission chain:

  • Load Capacity: Determine the maximum load that the chain will need to transmit. This includes both the static and dynamic loads. Ensure that the selected chain has a sufficient load capacity to handle the application requirements.
  • Speed and RPM: Consider the operating speed and rotational speed of the chain. Higher speeds may require chains with improved fatigue resistance and lubrication capabilities.
  • Environment: Evaluate the environmental conditions in which the chain will operate. Factors such as temperature, moisture, dust, chemicals, and corrosive agents can impact chain performance. Choose a chain that is resistant to the specific environmental conditions.
  • Alignment and Tension: Ensure proper alignment and tensioning of the chain. Misalignment and improper tension can lead to premature wear and failure. Select a chain that allows for proper adjustment and maintains optimal tension during operation.
  • Maintenance: Consider the maintenance requirements of the chain. Some chains may require regular lubrication, while others may be self-lubricating or maintenance-free. Evaluate the available resources and the desired level of maintenance for the application.
  • Compatibility: Ensure compatibility between the chain and other components in the transmission system, such as sprockets or gears. The chain should match the tooth profile and pitch of the mating components.
  • Manufacturer’s Recommendations: Consult the manufacturer’s guidelines and recommendations for selecting the appropriate chain for specific applications. Manufacturers often provide detailed specifications, load charts, and application guidelines for their chains.

By considering these factors and consulting with chain manufacturers or industry experts, you can choose the right transmission chain that meets the specific requirements of your application, ensuring reliable and efficient operation.

China high quality Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture  China high quality Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture
editor by CX 2024-03-26

China OEM Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture

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
15 *03C 4.7625 2.48 2.38 1.62 6.10 6.90 4.30 0.60 1.80/409 2.0 0.08

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

What are the benefits of using an anti-corrosion coating on a transmission chain?

Using an anti-corrosion coating on a transmission chain offers several benefits. Here’s a detailed explanation:

1. Enhanced Durability: Corrosion is a common enemy of metal components, and transmission chains are no exception. Applying an anti-corrosion coating forms a protective barrier that shields the chain from corrosive elements, such as moisture, chemicals, and environmental factors. This helps to prevent rust and corrosion, increasing the chain’s lifespan and overall durability.

2. Improved Performance: Corrosion can negatively impact the performance of a transmission chain. It can cause surface irregularities, increase friction, and lead to premature wear and tear. By using an anti-corrosion coating, the chain’s surfaces remain smooth and intact, reducing friction and maintaining optimal performance. This results in smoother operation, reduced energy loss, and improved efficiency.

3. Cost Savings: Corrosion can lead to chain failure and the need for frequent replacements, which can be costly. By applying an anti-corrosion coating, the chain’s resistance to corrosion is significantly improved, reducing the likelihood of premature failure. This translates to cost savings by extending the chain’s lifespan and minimizing maintenance and replacement expenses.

4. Increased Reliability: A transmission chain that is protected against corrosion is more reliable in demanding operating environments. It can withstand exposure to harsh conditions, such as high humidity, extreme temperatures, or chemical exposure, without compromising its performance. This increased reliability ensures that the chain can continue to function effectively, minimizing downtime and improving productivity.

5. Maintenance Simplification: An anti-corrosion coating reduces the maintenance requirements for a transmission chain. With a corrosion-resistant surface, the chain is less prone to debris buildup, sticking, or binding. This simplifies the cleaning and lubrication processes, saving time and effort in maintenance tasks.

6. Versatility: The application of an anti-corrosion coating allows transmission chains to be used in a wide range of environments and industries. Whether it’s outdoor equipment, marine applications, or corrosive chemical environments, the coating provides protection against corrosion, expanding the chain’s versatility and usability.

It’s important to choose the right type of anti-corrosion coating based on the specific operating conditions and requirements of the transmission chain. Consulting with experts or manufacturers can provide further guidance on selecting the most suitable coating for optimal protection and performance.

transmission chain

How does the choice of lubrication method impact the performance of a transmission chain?

The choice of lubrication method plays a crucial role in the performance and longevity of a transmission chain. Here’s a detailed answer to the question:

1. Reduced Friction and Wear: Proper lubrication ensures a thin film of lubricant between the moving parts of the transmission chain, reducing friction and minimizing wear. This helps to maintain the integrity of the chain’s components, such as pins, rollers, and bushings, by preventing metal-to-metal contact and reducing surface damage.

2. Heat Dissipation: Lubrication helps in dissipating heat generated during the operation of the transmission chain. By reducing friction and providing a cooling effect, the lubricant helps to prevent overheating, which can lead to premature wear, deformation, or failure of the chain.

3. Corrosion Protection: Lubricants often contain additives that offer corrosion protection to the transmission chain. These additives create a protective barrier against moisture, chemicals, and other corrosive elements, preventing rust formation and maintaining the chain’s performance in corrosive environments.

4. Noise Reduction: Adequate lubrication reduces the noise generated by the movement of the transmission chain. The lubricant acts as a cushion between the contacting surfaces, dampening vibrations and minimizing the noise levels produced during operation. This contributes to a quieter and smoother chain operation.

5. Extended Lifespan: Proper lubrication helps to extend the lifespan of the transmission chain. By reducing friction, wear, and the accumulation of debris, lubrication minimizes the stress on the chain’s components, resulting in improved durability and reduced likelihood of premature failure.

6. Operational Efficiency: A well-lubricated transmission chain operates with higher efficiency. With reduced friction, the chain experiences less power loss, enabling more effective power transmission. This leads to improved overall system efficiency, reduced energy consumption, and lower operating costs.

7. Contamination Prevention: Lubrication acts as a barrier, preventing contaminants, such as dust, dirt, and debris, from entering the chain’s components. This helps to maintain the cleanliness of the chain, reducing the risk of abrasive wear and preserving the integrity of its parts.

It’s important to consider the specific operating conditions, such as temperature, speed, load, and environment, when selecting the lubrication method for a transmission chain. Factors such as the viscosity, temperature range, and compatibility of the lubricant with the chain material should be taken into account to ensure optimal lubrication performance.

transmission chain

What materials are commonly used in manufacturing transmission chains?

Transmission chains are manufactured using various materials, each offering different properties and advantages. The choice of material depends on the specific application requirements, including load capacity, wear resistance, and environmental conditions. Here are some commonly used materials in the manufacturing of transmission chains:

  • Carbon Steel: Carbon steel is a popular choice for transmission chains due to its excellent strength, durability, and affordability. It provides good wear resistance and can handle moderate loads.
  • Stainless Steel: Stainless steel chains are highly resistant to corrosion and offer superior durability in challenging environments. They are commonly used in industries where cleanliness and hygiene are critical, such as food processing and pharmaceuticals.
  • Alloy Steel: Alloy steel chains are alloyed with various elements to enhance their mechanical properties. They offer higher strength, increased wear resistance, and improved fatigue resistance compared to carbon steel chains.
  • Plastic: Plastic chains are lightweight, corrosion-resistant, and offer excellent chemical resistance. They are often used in applications where noise reduction, low friction, or non-magnetic properties are required.
  • Non-metallic Composites: Non-metallic composite chains are made from materials such as fiberglass, carbon fiber, or Kevlar. These chains offer high strength-to-weight ratios, exceptional chemical resistance, and low friction characteristics.

It’s important to select the appropriate chain material based on the specific operating conditions and requirements of the application. Factors such as load capacity, speed, environmental conditions, and maintenance considerations should be taken into account when choosing the material for a transmission chain.

China OEM Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture  China OEM Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture
editor by CX 2023-12-26

China wholesaler Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture

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
15 *03C 4.7625 2.48 2.38 1.62 6.10 6.90 4.30 0.60 1.80/409 2.0 0.08

*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.

 

 

 

 

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car
Surface Treatment: Polishing
Samples:
US$ 3/Meter
1 Meter(Min.Order)

|

Order Sample

Customization:
Available

|

Customized Request

.shipping-cost-tm .tm-status-off{background: none;padding:0;color: #1470cc}

Shipping Cost:

Estimated freight per unit.







about shipping cost and estimated delivery time.
Payment Method:







 

Initial Payment



Full Payment
Currency: US$
Return&refunds: You can apply for a refund up to 30 days after receipt of the products.

transmission chain

What are the benefits of using an anti-corrosion coating on a transmission chain?

Using an anti-corrosion coating on a transmission chain offers several benefits. Here’s a detailed explanation:

1. Enhanced Durability: Corrosion is a common enemy of metal components, and transmission chains are no exception. Applying an anti-corrosion coating forms a protective barrier that shields the chain from corrosive elements, such as moisture, chemicals, and environmental factors. This helps to prevent rust and corrosion, increasing the chain’s lifespan and overall durability.

2. Improved Performance: Corrosion can negatively impact the performance of a transmission chain. It can cause surface irregularities, increase friction, and lead to premature wear and tear. By using an anti-corrosion coating, the chain’s surfaces remain smooth and intact, reducing friction and maintaining optimal performance. This results in smoother operation, reduced energy loss, and improved efficiency.

3. Cost Savings: Corrosion can lead to chain failure and the need for frequent replacements, which can be costly. By applying an anti-corrosion coating, the chain’s resistance to corrosion is significantly improved, reducing the likelihood of premature failure. This translates to cost savings by extending the chain’s lifespan and minimizing maintenance and replacement expenses.

4. Increased Reliability: A transmission chain that is protected against corrosion is more reliable in demanding operating environments. It can withstand exposure to harsh conditions, such as high humidity, extreme temperatures, or chemical exposure, without compromising its performance. This increased reliability ensures that the chain can continue to function effectively, minimizing downtime and improving productivity.

5. Maintenance Simplification: An anti-corrosion coating reduces the maintenance requirements for a transmission chain. With a corrosion-resistant surface, the chain is less prone to debris buildup, sticking, or binding. This simplifies the cleaning and lubrication processes, saving time and effort in maintenance tasks.

6. Versatility: The application of an anti-corrosion coating allows transmission chains to be used in a wide range of environments and industries. Whether it’s outdoor equipment, marine applications, or corrosive chemical environments, the coating provides protection against corrosion, expanding the chain’s versatility and usability.

It’s important to choose the right type of anti-corrosion coating based on the specific operating conditions and requirements of the transmission chain. Consulting with experts or manufacturers can provide further guidance on selecting the most suitable coating for optimal protection and performance.

transmission chain

What are the advantages of using a flame-retardant transmission chain?

Flame-retardant transmission chains offer specific benefits in certain applications where fire safety is a concern. Here’s a detailed answer to the question:

1. Fire Protection: The primary advantage of using a flame-retardant transmission chain is enhanced fire protection. These chains are designed with materials and coatings that have high resistance to ignition and flame spread. In the event of a fire, they help to minimize the risk of the chain contributing to the spread of flames.

2. Safety: Flame-retardant transmission chains contribute to overall safety in environments where fire hazards are present. By reducing the flammability of the chain, they help prevent the chain from igniting or sustaining a fire, protecting personnel and property.

3. Compliance with Fire Regulations: In industries or applications where fire safety regulations are stringent, using flame-retardant transmission chains ensures compliance with these requirements. It helps to meet the necessary standards and regulations for fire prevention and protection.

4. Extended Escape Time: In situations where personnel may need to evacuate quickly during a fire, flame-retardant transmission chains can provide valuable additional time for safe evacuation. By resisting ignition and flame propagation, they help maintain structural integrity and delay the spread of fire.

5. Property Protection: Flame-retardant transmission chains help protect valuable equipment, machinery, and assets from fire damage. By reducing the risk of the chain catching fire, they minimize the potential for equipment failure and subsequent loss or damage.

It’s important to note that flame-retardant transmission chains may have specific design considerations and limitations. They are typically used in applications where fire safety is critical, such as in transportation systems, aerospace, mining, and other industries where the risk of fire is high. Selecting the appropriate flame-retardant chain requires considering the specific requirements of the application and ensuring compliance with relevant fire safety standards and regulations.

transmission chain

What are the advantages of using stainless steel transmission chains?

Stainless steel transmission chains offer several advantages over chains made from other materials. Here are some key benefits of using stainless steel transmission chains:

  • Corrosion Resistance: Stainless steel chains are highly resistant to corrosion and rust, making them ideal for applications in harsh or corrosive environments. They can withstand exposure to moisture, chemicals, and temperature variations without compromising their performance.
  • Durability and Longevity: Stainless steel chains have excellent durability and a long service life. They are less susceptible to wear and fatigue, ensuring reliable operation even under heavy loads and demanding conditions. This reduces the need for frequent replacements and maintenance, resulting in cost savings over time.
  • Hygiene and Cleanliness: Stainless steel chains are commonly used in industries with strict hygiene requirements, such as food processing, pharmaceuticals, and medical equipment. They are easy to clean and sanitize, resistant to contamination, and can withstand high-temperature washdowns without degradation.
  • High Strength: Stainless steel chains have high tensile strength, allowing them to handle heavy loads and transmit power effectively. This makes them suitable for applications requiring robust and reliable power transmission.
  • Temperature Resistance: Stainless steel chains exhibit good resistance to high and low temperatures. They can maintain their mechanical properties and performance even in extreme temperature environments, making them suitable for applications with temperature variations.
  • Low Maintenance: Due to their excellent corrosion resistance and durability, stainless steel chains require minimal maintenance. They operate reliably with minimal lubrication, reducing the need for frequent inspections and lubrication intervals.

Overall, stainless steel transmission chains provide a reliable and long-lasting solution for applications where corrosion resistance, durability, hygiene, and strength are essential.

China wholesaler Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture  China wholesaler Gearbox Transmission Belt Parts Attachment Products 15 a Series Short Pitch Precision Simplex Roller Chains and Bush Chains for Agriculture
editor by CX 2023-11-17

High factory China Precision Roller Chain China Manufacturer Stainless Steel Combine Chains 208AF3(A) for Agriculture

High  factory  China Precision Roller Chain China Manufacturer Stainless Steel Combine Chains 208AF3(A) for Agriculture

Detail Information

No.208AF2/208AF3/208AF3A Dimensions

Combine Chains Specifications

Service & Quality controlWe supply detailed drawings and offer whenever necessary.

Roller Chain Parts Every chain is connected at the ends to form a complete circle or chain loop by a master connecting link. Cotter plates or spring clips keep the connecting link’s pins from working loose.

Chain No. Pitch(mm) Roller Diameter(mm) Width between inner plates(mm) Pin diameterd2
(mm)
Pin lengthL1
(mm)
Pin lengthL2
(mm)
Pin lengthLc
(mm)
Inner plate depthh2(mm) Tensile strengthkN/lbf Average tensile strength kN
208AF2 12.7 7.95 4.80 3.96 13.1 14.7 14.5 12.0 13.8/3136 16.0
208AF3 12.7 7.95 4.80 3.96 13.1 14.5 12.0 13.8/3136 16.0
208AF3A 12.7 7.95 7.85 3.96 16.6 17.8 12.0 13.8/3136 16.0

POProduct Information

Flexible combine chains

The products are made of high quality alloy
steel production. The plates are punched and squeezed bores by precision
technology. The pin, bush, roller are machined by high-efficiency automatic
equipment and automatic grinding equipment, then through heat treatment of carburization,
carbon and nitrogen protection mesh belt furnace, surface blasting process etc.
Made from the steel and the up-to-date skills as well as precision procedures, the combine 
chains can withstand strong pressure and high temperature.


Availability:

* Standard chains

* Customized chains

 

Quality Assurance:

ISO9001: 2015 and
GB/T24001-2016 / ISO14001: 2015.

 



High quality
: 

√Corrosion resistance

√Durable, Robust and
Reliable

√Bad condition
resistance

√Lower weight–high
speed


Services:

√Surface treatment

√Hardened teeth

√Serious quality control

 

Application industries:

√Manufacturing

√Agriculture
√Building Material
√Oil and Gas

√Technology and Science

……

High Precision Roller Chain China Manufacturer

 


Stainless Cost China Steel Combine Chains C212AF1 for Agriculture High Precision Roller Chain China Manufacturer

Stainless  Cost  China Steel Combine Chains C212AF1 for Agriculture High Precision Roller Chain China Manufacturer

Detail Information

No.C210AF1/C212AF1 Dimensions

Combine Chains Specifications

Chain No. Pitch(mm)
ISO 9001:2000 certified. Stocking distributor of power transmission products including roller & multiple strand roller chains. Products also include brakes, drive components, gears, torque limiters, U-joints, pulleys, sheaves, encoders, belt drives, clutches & motors are also available.
Roller Diameter(mm) Width between inner plates(mm) Pin diameterd2
(mm)
Pin lengthL
(mm)
Pin lengthLc
(mm)
Inner plate depthh2(EPG will always adhere to it enterprise spirit of being practical, innovative, efficient and excellent to make the top international transmission drive.mm) Tensile strengthkN/lbf Average tensile strength kN
C210AF1 31.75 10.16 9.40 5.08 20.7 23.3 15.0 21.8/4955 28.5
C212AF1 38.10 11.91 12.57 5.94 25.9 28.3 18.0 31.1/7068 38.7

POProduct Information


The products are made of high quality alloy
steel production. The plates are punched and squeezed bores by precision
technology. The pin, bush, roller are machined by high-efficiency automatic
equipment and automatic grinding equipment, then through heat treatment of carburization,
carbon and nitrogen protection mesh belt furnace, surface blasting process etc.
Made from the steel and the up-to-date skills as well as precision procedures, the combine 
chains can withstand strong pressure and high temperature.


Availability:

* Standard chains

* Customized chains

 

Quality Assurance:

ISO9001: 2015 and
GB/T24001-2016 / ISO14001: 2015.

 



High quality
: 

√Corrosion resistance

√Durable, Robust and
Reliable

√Bad condition
resistance

√Lower weight–high
speed


Services:

√Surface treatment

√Hardened teeth

√Serious quality control

 

Application industries:

√Manufacturing

√Agriculture
√Building Material
√Oil and Gas

√Technology and Science

……

High Precision Roller Chain China Manufacturer