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China supplier Automatic Conveyor Belt Parts 12A-5 a Series Short Pitch Precision Multiple Strand Driving Roller Chains and Bush Chains

Product Description

A Series Short Pitch Precision Multiple Strand Roller Chains & Bush Chains

 

ANSI
Chain No.

Chain No.

Pitch

P
mm

Roller diameter

d1max
mm

Width between inner plates
b1min
mm
Pin diameter

d2max
mm

Pin length Inner plate depth
h2max
mm
Plate thickness

Tmax
mm

Transverse pitch
    Pt     mm
Tensile strength

Qmin
kN/lbf

Average tensile strength

Q0
kN

Weight per meter
q   kg/m
Lmax
mm
Lcmax
mm
60-5 12A-5 19.050 11.91 12.57 5.94 117.0 118.8 18.00 2.42 22.78 159.0/35768 174.90 7.75

 

 

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.

 

Usage: Transmission Chain, Drag Chain, Conveyor Chain, Dedicated Special Chain
Material: Stainless steel
Surface Treatment: Polishing
Samples:
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1 Meter(Min.Order)

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bush chain

What are the safety precautions when working with bush chains?

Working with bush chains requires adherence to certain safety precautions to ensure the well-being of operators and prevent accidents. Here are some important safety measures to consider:

1. Personal protective equipment (PPE): Operators should wear appropriate PPE, including safety glasses, gloves, and protective clothing, to protect themselves from potential hazards such as flying debris, pinching, or entanglement.

2. Training and knowledge: Operators should be properly trained in the operation and maintenance of bush chains. They should have a thorough understanding of the equipment, including its components, functions, and potential hazards. Training should cover safe operating procedures, including start-up, shutdown, and emergency procedures.

3. Lockout/tagout procedures: Before performing any maintenance or repair work on a bush chain, proper lockout/tagout procedures should be followed. This involves isolating the power source, de-energizing the equipment, and securing it with lockout devices or tags to prevent accidental startup.

4. Regular inspections: Regular inspections should be conducted to identify any signs of wear, damage, or misalignment in the bush chain. This includes checking for loose bolts, worn sprockets, damaged links, or any other issues that could compromise the chain’s integrity. Any identified problems should be promptly addressed to prevent further damage or accidents.

5. Proper lifting and handling: When handling bush chains, proper lifting techniques should be employed to prevent strain or injury. Chains should be lifted using appropriate lifting equipment, and operators should avoid placing themselves in a position where they could be caught between moving parts.

6. Clean and well-maintained work environment: The work area should be clean, well-lit, and free from clutter or obstructions. This ensures that operators have clear visibility and can safely access the bush chain without tripping or other hazards.

7. Follow manufacturer guidelines: It is important to follow the manufacturer’s guidelines and recommendations for the safe use, maintenance, and inspection of the specific bush chain being used. This includes following recommended lubrication practices, tensioning guidelines, and any other instructions provided by the manufacturer.

By adhering to these safety precautions, operators can mitigate potential risks associated with working with bush chains and ensure a safe working environment for themselves and others involved in the operation and maintenance of the equipment.

bush chain

Can a bush chain be used in corrosive or harsh environments?

Yes, a bush chain can be used in corrosive or harsh environments, but it requires careful selection and proper maintenance to ensure optimal performance and longevity. Here are some considerations:

1. Material Selection: When operating in corrosive environments, it is crucial to select a bush chain made from corrosion-resistant materials such as stainless steel or specialty alloys. These materials offer enhanced resistance to corrosion and chemical attack.

2. Coatings and Surface Treatments: Applying coatings or surface treatments to the bush chain can provide additional protection against corrosion. For example, coatings like zinc plating, nickel plating, or chemical treatments can help inhibit rust and corrosion.

3. Sealing and Protection: In harsh environments, it is essential to protect the bush chain from contaminants and corrosive substances. Enclosing the chain in a protective housing or using seals, covers, or boots can help prevent the entry of corrosive agents and debris.

4. Proper Lubrication: Adequate lubrication is crucial for reducing friction and preventing corrosion. Choose lubricants specifically designed for use in corrosive environments, such as those with anti-corrosion additives. Regular lubrication maintenance is necessary to ensure the chain remains well-lubricated and protected.

5. Cleaning and Maintenance: Regular cleaning and maintenance are vital to remove any corrosive substances or contaminants that may have accumulated on the chain. This includes thorough cleaning, inspection, and re-lubrication as necessary.

It is important to consult with chain manufacturers or industry experts to determine the most suitable bush chain and maintenance practices for the specific corrosive or harsh environment. By implementing these measures, a bush chain can effectively operate and withstand the challenges posed by corrosive or harsh conditions.

bush chain

Can a bush chain be used in high-speed applications?

Yes, bush chains can be used in high-speed applications, but there are certain considerations to keep in mind. While bush chains are known for their durability and strength, they may have limitations in terms of their maximum allowable speed due to factors such as centrifugal forces and dynamic loads.

The speed capability of a bush chain depends on several factors, including the chain design, material, lubrication, and operating conditions. It is important to select a bush chain that is specifically designed for high-speed applications and to follow the manufacturer’s recommendations regarding speed limits.

In high-speed applications, it is crucial to ensure proper chain tensioning and alignment to minimize vibration and reduce the risk of chain failure. Regular maintenance, including lubrication and inspection, is also essential to prevent premature wear and extend the service life of the chain.

Additionally, the selection of a suitable lubricant is important for high-speed bush chain applications. The lubricant should have excellent film strength and provide sufficient protection against wear and friction at high speeds. It is recommended to consult with the chain manufacturer or a lubrication specialist to determine the most suitable lubrication solution.

Overall, while bush chains can be used in high-speed applications, it is essential to consider the specific requirements and limitations of the application and to ensure proper maintenance and lubrication to achieve reliable and efficient operation.

China supplier Automatic Conveyor Belt Parts 12A-5 a Series Short Pitch Precision Multiple Strand Driving Roller Chains and Bush Chains  China supplier Automatic Conveyor Belt Parts 12A-5 a Series Short Pitch Precision Multiple Strand Driving Roller Chains and Bush Chains
editor by CX 2023-10-24

China supplier Automatic Conveyor Belt Parts 12A-5 a Series Short Pitch Precision Multiple Strand Driving Roller Chains and Bush Chains

Product Description

A Series Short Pitch Precision Multiple Strand Roller Chains & Bush Chains

 

ANSI
Chain No.

Chain No.

Pitch

P
mm

Roller diameter

d1max
mm

Width between inner plates
b1min
mm
Pin diameter

d2max
mm

Pin length Inner plate depth
h2max
mm
Plate thickness

Tmax
mm

Transverse pitch
    Pt     mm
Tensile strength

Qmin
kN/lbf

Average tensile strength

Q0
kN

Weight per meter
q   kg/m
Lmax
mm
Lcmax
mm
60-5 12A-5 19.050 11.91 12.57 5.94 117.0 118.8 18.00 2.42 22.78 159.0/35768 174.90 7.75

 

 

ROLLER CHAIN

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

CONSTRUCTION OF THE CHAIN

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

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

LUBRICATION

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

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

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

VARIANTS DESIGN

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

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

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

USE

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

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

WEAR

 

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

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

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

M = the length of a number of links measured

S = the number of links measured

P = Pitch

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

CHAIN STRENGTH

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

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

CHAIN STHangZhouRDS

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

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

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

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

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

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

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

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

 

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

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

 

Shipping Cost:

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bush chain

How does a bush chain handle misalignment in a system?

A bush chain is designed to accommodate a certain degree of misalignment within a system. Here’s how a bush chain handles misalignment:

1. Flexibility: The construction of a bush chain allows it to flex and adjust to minor misalignments. The bushings, which are inserted into the chain’s links, provide a degree of flexibility and allow the chain to move smoothly even when the sprockets are slightly misaligned.

2. Self-Alignment: The self-lubricating properties of some bush chains contribute to their ability to handle misalignment. The lubrication helps reduce friction and allows the chain to self-align by adjusting its position to minimize stress and binding caused by misaligned sprockets.

3. Tolerance for Misalignment: Bush chains are designed with specific clearance between the bushings and pins. This clearance provides some tolerance for misalignment. It allows the chain to accommodate slight angular or parallel misalignment between the sprockets without causing excessive wear or damage.

4. Compensation for Load Variances: In systems where load distribution is not uniform, such as conveyor systems, bush chains can help compensate for load variances. The flexibility of the chain allows it to adapt to changes in load distribution and adjust accordingly, reducing stress on the chain and sprockets.

It is important to note that while bush chains can handle minor misalignment, excessive misalignment should be avoided. Excessive misalignment can cause accelerated wear, increased noise, and reduced chain life. Proper alignment and regular maintenance are essential to ensure optimal performance and longevity of the bush chain system.

bush chain

Can a bush chain be used in corrosive or harsh environments?

Yes, a bush chain can be used in corrosive or harsh environments, but it requires careful selection and proper maintenance to ensure optimal performance and longevity. Here are some considerations:

1. Material Selection: When operating in corrosive environments, it is crucial to select a bush chain made from corrosion-resistant materials such as stainless steel or specialty alloys. These materials offer enhanced resistance to corrosion and chemical attack.

2. Coatings and Surface Treatments: Applying coatings or surface treatments to the bush chain can provide additional protection against corrosion. For example, coatings like zinc plating, nickel plating, or chemical treatments can help inhibit rust and corrosion.

3. Sealing and Protection: In harsh environments, it is essential to protect the bush chain from contaminants and corrosive substances. Enclosing the chain in a protective housing or using seals, covers, or boots can help prevent the entry of corrosive agents and debris.

4. Proper Lubrication: Adequate lubrication is crucial for reducing friction and preventing corrosion. Choose lubricants specifically designed for use in corrosive environments, such as those with anti-corrosion additives. Regular lubrication maintenance is necessary to ensure the chain remains well-lubricated and protected.

5. Cleaning and Maintenance: Regular cleaning and maintenance are vital to remove any corrosive substances or contaminants that may have accumulated on the chain. This includes thorough cleaning, inspection, and re-lubrication as necessary.

It is important to consult with chain manufacturers or industry experts to determine the most suitable bush chain and maintenance practices for the specific corrosive or harsh environment. By implementing these measures, a bush chain can effectively operate and withstand the challenges posed by corrosive or harsh conditions.

bush chain

What industries commonly use bush chains?

Bush chains are widely used in various industries that require reliable and efficient power transmission systems. Here are some industries that commonly utilize bush chains:

1. Manufacturing and Machinery: Bush chains find extensive use in manufacturing and machinery applications. They are employed in conveyors, assembly lines, packaging equipment, machine tools, and other machinery where reliable and smooth power transmission is essential.

2. Automotive: The automotive industry relies on bush chains for various applications, including engine timing systems, camshaft drives, timing belts, and other critical automotive components. Bush chains offer the durability and strength required for high-speed and high-torque applications.

3. Agriculture: Bush chains play a crucial role in agricultural machinery such as tractors, combines, harvesters, and irrigation systems. They are used for transmitting power in these rugged and demanding environments, providing reliable operation even under heavy loads.

4. Material Handling: The material handling industry heavily utilizes bush chains in conveyor systems, elevators, escalators, and other equipment involved in the movement of goods. Bush chains offer the strength and durability required for handling heavy loads and continuous operation.

5. Mining and Quarrying: In mining and quarrying operations, bush chains are employed in various equipment, including crushers, screens, conveyors, and bucket elevators. They withstand the harsh conditions and heavy loads encountered in these industries.

6. Energy and Power Generation: Bush chains are used in power plants, renewable energy systems, and other energy-related applications. They are utilized in equipment such as turbines, generators, pumps, and conveyors to transmit power efficiently and reliably.

7. Construction and Heavy Equipment: The construction industry relies on bush chains in equipment like cranes, excavators, loaders, and bulldozers. These chains provide the necessary power transmission for the movement of heavy loads and the operation of various construction machinery.

These are just a few examples of the industries that commonly use bush chains. However, bush chains have a broad range of applications and can be found in many other industries where reliable power transmission is required.

China supplier Automatic Conveyor Belt Parts 12A-5 a Series Short Pitch Precision Multiple Strand Driving Roller Chains and Bush Chains  China supplier Automatic Conveyor Belt Parts 12A-5 a Series Short Pitch Precision Multiple Strand Driving Roller Chains and Bush Chains
editor by CX 2023-09-05

China supplier ANSI 200 High Strength and Wear Resistance Industrial Short Pitch Precision Conveyor Roller Chains for Steel Mill and Oil Drilling near me supplier

ProductDescription

SMCCrollerchainisoneofthemostwidelyusedandwelcomeproductsinthemarket.Itscontinuousinnovativedevelopmentissuitabletobethesolutionsformanyconditions,standardrollerchains,motorcycledrivingchain,O-ringmotorcyclechain,highstrengthrollerchain,conveyorchains,agriculturaldrivingchain,galvanizedchain,nickel-platedchain,lubrication-freecZheJiang doilfieldchainetc.

OurSMCCchainwasproducedbymachineryprocessingfromrawmaterialstofinishedproductsandafullsetofqualitytestingequipment.Mechanicalprocessingequipmentincludegrindingmachines,highspeedpunchingmachines,millingmachines,highspeedautomaticrollingandassemblingmachine.Heattreatmentwasprocessedbycontinuousmeshbeltconveyorfurnace,meshbeltconveyorannealingfurnace,advancedcentralcontrolsystemofheattreatment,rotaryfurnaceforchaincomponentheattreatment,whichensurethestabilityandconsistencyofthekeyfunctionofchaincomponents.
WearethebestsuppliersofChineselargestpalletizingrobotenterprises.Theseitemsaredurablequalitywithaffordableprices,replaceofJapanchains,ZheJiang chainsexportedtoEurope,The us,Asiaandothercountriesand regions.
 

ProductName Quick-pitchprecisionrollerandbushchains Design 04C,06C,085,08A,10A,12A,16A,20A,24A,28A,32A,36A,40A,48A   25,35,forty one,40,50~240       
06B,08B,10B,12B,16B,20B,24B,28B,32B,40B,48B,56B,64B,72BSimplex,Duplex,Triplex, Quadruplex Materials carbonsteel,alloysteel,stainlesssteel,nylon Designstyle Customizeandstandard Qualityapproved ISO90001,SGS SurfaceTreatment rust-preventativeoil ShippingType sea&air Packaging carton,woodencase,pallet

 

ROLLERCHAIN

Rollerchainorbushrollerchainisthetypeofchaindrivemostcommonlyusedfortransmissionofmechanicalpoweronmanykindsofdomestic,industrialandagriculturalmachinery,includingconveyors,wire-andtube-drawingmachines,printingpresses,cars,motorcycles,andbicycles.Itconsistsofa seriesofshortcylindricalrollersheldtogetherbysidelinks.Itisdrivenbya toothedwheelcalleda sprocket.Itisa simple,reliable,andefficientmeansofpowertransmission.

CONSTRUCTIONOFTHECHAIN

Twodifferentsizesofrollerchain,showingconstruction.
Therearetwotypesoflinksalternatinginthebushrollerchain.Thefirsttypeisinnerlinks,havingtwoinnerplatesheldtogetherbytwosleevesorbushingsuponwhichrotatetworollers.Innerlinksalternatewiththesecondtype,theouterlinks,consistingoftwoouterplatesheldtogetherbypinspassingthroughthebushingsoftheinnerlinks.The”bushingless”rollerchainissimilarinoperationthoughnotinconstructioninsteadofseparatebushingsorsleevesholdingtheinnerplatestogether,theplatehasa tubestampedintoitprotrudingfromtheholewhichservesthesamepurpose.Thishastheadvantageofremovingonestepinassemblyofthechain.

Therollerchaindesignreducesfrictioncomparedtosimplerdesigns,resultinginhigherefficiencyandlesswear.Theoriginalpowertransmissionchainvarietieslackedrollersandbushings,withboththeinnerandouterplatesheldbypinswhichdirectlycontactedthesprocketteethhoweverthisconfigurationexhibitedextremelyrapidwearofboththesprocketteeth,andtheplateswheretheypivotedonthepins.Thisproblemwaspartiallysolvedbythedevelopmentofbushedchains,withthepinsholdingtheouterplatespassingthroughbushingsorsleevesconnectingtheinnerplates.Thisdistributedthewearovera greaterareahowevertheteethofthesprocketsstillworemorerapidlythanisdesirable,fromtheslidingfrictionagainstthebushings.TheadditionofrollerssurroundingthebushingsleevesofthecZheJiang dprovidedrollingcontactwiththeteethofthesprocketsresultinginexcellentresistancetowearofbothsprocketsandchainaswell.Thereisevenverylowfriction,aslongasthechainissufficientlylubricated.Ongoing,clear,lubricationofrollerchainsisofprimaryimportanceforefficientoperationaswellascorrecttensioning.

LUBRICATION

Manydrivingchains(forexample,infactoryequipment,ordrivinga camshaftinsideaninternalcombustionengine)operateincleanenvironments,andthusthewearingsurfaces(thatis,thepinsandbushings)aresafefromprecipitationandairbornegrit,manyevenina sealedenvironmentsuchasanoilbath.Somerollerchainsaredesignedtohaveo-ringsbuiltintothespacebetweentheoutsidelinkplateandtheinsiderollerlinkplates.Chainmanufacturersbegantoincludethisfeaturein1971aftertheapplicationwasinventedbyJosephMontanowhileworkingforWhitneyChainofHartford,Connecticut.O-ringswereincludedasa waytoimprovelubricationtothelinksofpowertransmissionchains,a servicethatisvitallyimportanttoextendingtheirworkinglife.Theserubberfixturesforma barrierthatholdsfactoryappliedlubricatinggreaseinsidethepinandbushingwearareas.Additional,therubbero-ringspreventdirtandothercontaminantsfromenteringinsidethechainlinkages,wheresuchparticleswouldotherwisecausesignificantwear.[citationneeded]

Therearealsomanychainsthathavetooperateindirtyconditions,andforsizeoroperationalreasonscannotbesealed.Examplesincludechainsonfarmequipment,bicycles,andchainsaws.Thesechainswillnecessarilyhaverelativelyhighratesofwear,particularlywhentheoperatorsarepreparedtoacceptmorefriction,lessefficiency,morenoiseandmorefrequentreplacementastheyneglectlubricationandadjustment.

Manyoil-basedlubricantsattractdirtandotherparticles,eventuallyforminganabrasivepastethatwillcompoundwearonchains.Thisproblemcanbecircumventedbyuseofa “dry”PTFEspray,whichformsa solidfilmafterapplicationandrepelsbothparticlesandmoisture.

VARIANTSDESIGN

Layoutofa rollerchain:1.Outerplate,2.Innerplate,3.Pin,4.Bushing,5.Roller
Ifthechainisnotbeingusedfora highwearapplication(forinstanceifitisjusttransmittingmotionfroma hand-operatedlevertoa controlshaftona machine,ora slidingdooronanoven),thenoneofthesimplertypesofchainmaystillbeused.Conversely,whereextrastrengthbutthesmoothdriveofa smallerpitchisrequired,thechainmaybe”siamesed”insteadofjusttworowsofplatesontheoutersidesofthechain,theremaybethree(“duplex”),4(“triplex”),ormorerowsofplatesrunningparallel,withbushingsandrollersbetweeneachadjacentpair,andthesamenumberofrowsofteethrunninginparallelonthesprocketstomatch.Timingchainsonautomotiveengines,forexample,typicallyhavemultiplerowsofplatescalledstrands.

Rollerchainismadeinseveralsizes,themostcommonAmericanNationalStandardsInstitute(ANSI)standardsbeing40,fifty,60,and80.Thefirstdigit(s)indicatethepitchofthechainineighthsofaninch,withthelastdigitbeing0 forstandardchain,1 forlightweightchain,and5 forbushedchainwithnorollers.Thus,a chainwithhalf-inchpitchwouldbea #40whilea #160sprocketwouldhaveteethspaced2 inchesapart,etc.Metricpitchesareexpressedinsixteenthsofaninchthusa metric#8chain(08B-1)wouldbeequivalenttoanANSI#forty.Mostrollerchainismadefromplaincarbonoralloysteel,butstainlesssteelisusedinfoodprocessingmachineryorotherplaceswherelubricationisa problem,andnylonorbrassareoccasionallyseenforthesamereason.

Rollerchainisordinarilyhookedupusinga masterlink(alsoknownasa connectinglink),whichtypicallyhasonepinheldbya horseshoeclipratherthanfrictionfit,allowingittobeinsertedorremovedwithsimpletools.Chainwitha removablelinkorpinisalsoknownascotteredchain,whichallowsthelengthofthechaintobeadjusted.Halflinks(alsoknownasoffsets)areavailableandareusedtoincreasethelengthofthechainbya singleroller.Rivetedrollerchainhasthemasterlink(alsoknownasa connectinglink)”riveted”ormashedontheends.Thesepinsaremadetobedurableandarenotremovable.

USE

Anexampleoftwo’ghost’sprocketstensioninga triplexrollerchainsystem
Rollerchainsareusedinlow-tomid-speeddrivesataround600to800feetperminutehowever,athigherspeeds,around2,000to3,000feetperminute,V-beltsarenormallyusedduetowearandnoiseissues.
Abicyclechainisa formofrollerchain.Bicyclechainsmayhavea masterlink,ormayrequirea chaintoolforremovalandinstallation.A similarbutlargerandthusstrongerchainisusedonmostmotorcyclesalthoughitissometimesreplacedbyeithera toothedbeltora shaftdrive,whichofferlowernoiselevelandfewermaintenancerequirements.
Thegreatmajorityofautomobileenginesuserollerchainstodrivethecamshaft(s).Veryhighperformanceenginesoftenusegeardrive,andstartingintheearly1960stoothedbeltswereusedbysomemanufacturers.
Chainsarealsousedinforkliftsusinghydraulicramsasa pulleytoraiseandlowerthecarriagehowever,thesechainsarenotconsideredrollerchains,butareclassifiedasliftorleafchains.
Chainsawcuttingchainssuperficiallyresemblerollerchainsbutaremorecloselyrelatedtoleafchains.Theyaredrivenbyprojectingdrivelinkswhichalsoservetolocatethechainontothebar.

SeaHarrierFA.2ZA195front(chilly)vectorthrustnozzle- thenozzleisrotatedbya chaindrivefromanairmotor
Aperhapsunusualuseofa pairofmotorcyclechainsisintheHarrierJumpJet,wherea chaindrivefromanairmotorisusedtorotatethemovableenginenozzles,allowingthemtobepointeddownwardsforhoveringflight,ortotherearfornormalforwardflight,a systemknownasThrustvectoring.

Wear

 

Theeffectofwearona rollerchainistoincreasethepitch(spacingofthelinks),causingthechaintogrowlonger.Notethatthisisduetowearatthepivotingpinsandbushes,notfromactualstretchingofthemetal(asdoeshappentosomeflexiblesteelcomponentssuchasthehand-brakecableofa motorvehicle).

Withmodernchainsitisunusualfora chain(otherthanthatofa bicycle)towearuntilitbreaks,sincea wornchainleadstotherapidonsetofwearontheteethofthesprockets,withultimatefailurebeingthelossofalltheteethonthesprocket.Thesprockets(inparticularthesmallerofthetwo)suffera grindingmotionthatputsa characteristichookshapeintothedrivenfaceoftheteeth.(Thiseffectismadeworsebya chainimproperlytensioned,butisunavoidablenomatterwhatcareistaken).Thewornteeth(andchain)nolongerprovidessmoothtransmissionofpowerandthismaybecomeevidentfromthenoise,thevibrationor(incarenginesusinga timingchain)thevariationinignitiontimingseenwitha timinglight.Bothsprocketsandchainshouldbereplacedinthesecases,sincea newchainonwornsprocketswillnotlastlong.Even so,inlessseverecasesitmaybepossibletosavethelargerofthetwosprockets,sinceitisalwaysthesmalleronethatsuffersthemostwear.Onlyinverylight-weightapplicationssuchasa bicycle,orinextremecasesofimpropertension,willthechainnormallyjumpoffthesprockets.

Thelengtheningduetowearofa chainiscalculatedbythefollowingformula:

M= thelengthofa numberoflinksmeasured

S= thenumberoflinksmeasured

P= Pitch

Inindustry,itisusualtomonitorthemovementofthechaintensioner(whethermanualorautomatic)ortheexactlengthofa drivechain(oneruleofthumbistoreplacea rollerchainwhichhaselongated3%onanadjustabledriveor1.5%ona fixed-centerdrive).A simplermethod,particularlysuitableforthecycleormotorcycleuser,istoattempttopullthechainawayfromthelargerofthetwosprockets,whilstensuringthechainistaut.Anysignificantmovement(e.g.makingitpossibletoseethrougha gap)probablyindicatesa chainwornuptoandbeyondthelimit.Sprocketdamagewillresultiftheproblemisignored.Sprocketwearcancelsthiseffect,andmaymaskchainwear.

CHAINSTRENGTH

Themostcommonmeasureofrollerchain’sstrengthistensilestrength.Tensilestrengthrepresentshowmuchloada chaincanwithstandundera one-timeloadbeforebreaking.Justasimportantastensilestrengthisa chain’sfatiguestrength.Thecriticalfactorsina chain’sfatiguestrengthisthequalityofsteelusedtomanufacturethechain,theheattreatmentofthechaincomponents,thequalityofthepitchholefabricationofthelinkplates,andthetypeofshotplustheintensityofshotpeencoverageonthelinkplates.Otherfactorscanincludethethicknessofthelinkplatesandthedesign(contour)ofthelinkplates.Theruleofthumbforrollerchainoperatingona continuousdriveisforthechainloadtonotexceeda mere1/6or1/9ofthechain’stensilestrength,dependingonthetypeofmasterlinksused(press-fitvs.slip-suit)[citationneeded].Rollerchainsoperatingona continuousdrivebeyondthesethresholdscanandtypicallydofailprematurelyvialinkplatefatiguefailure.

ThestandardminimumultimatestrengthoftheANSI29.1steelchainis12,500x (pitch,ininches)two.X-ringandO-Ringchainsgreatlydecreasewearbymeansofinternallubricants,increasingchainlife.Theinternallubricationisinsertedbymeansofa vacuumwhenrivetingthechaintogether.

CHAINSTHangZhouRDS

Standardsorganizations(suchasANSIandISO)maintainstandardsfordesign,proportions,andinterchangeabilityoftransmissionchains.Forexample,thefollowingTableshowsdatafromANSIstandardB29.1-2011(PrecisionPowerTransmissionRollerChains,Attachments,andSprockets)developedbytheAmericanSocietyofMechanicalEngineers(ASME).Seethereferences[8][9][10] foradditionalinformation.

ASME/ANSIB29.1-2011RollerChainStandardSizesSizePitchMaximumRollerDiameterMinimumUltimateTensileStrengthMeasuringLoad25

ASME/ANSIB29.1-2011RollerChainStandardSizes Dimensions Pitch MaximumRollerDiameter MinimumUltimateTensileStrength MeasuringLoad 25 .250in(6.35mm) .130in(3.30mm) 780lb(350kg) 18lb(8.2kg) 35 .375in(9.53mm) .200in(5.08mm) 1,760lb(800kg) 18lb(8.2kg) 41 .500in(12.70mm) .306in(7.77mm) 1,500lb(680kg) 18lb(8.2kg) 40 .500in(twelve.70mm) .312in(7.92mm) 3,125lb(1,417kg) 31lb(14kg) fifty .625in(15.88mm) .400in(ten.16mm) four,880lb(2,210kg) 49lb(22kg) sixty .750in(19.05mm) .469in(11.91mm) seven,030lb(3,190kg) 70lb(32kg) eighty 1.000in(twenty five.40mm) .625in(fifteen.88mm) twelve,500lb(5,700kg) 125lb(57kg) one hundred one.250in(31.75mm) .750in(19.05mm) 19,531lb(8,859kg) 195lb(88kg) one hundred twenty 1.500in(38.10mm) .875in(22.23mm) 28,125lb(twelve,757kg) 281lb(127kg) one hundred forty 1.750in(44.45mm) 1.000in(25.40mm) 38,280lb(17,360kg) 383lb(174kg) 160 2.000in(50.80mm) one.125in(28.58mm) 50,000lb(23,000kg) 500lb(230kg) 180 two.250in(57.15mm) one.460in(37.08mm) 63,280lb(28,700kg) 633lb(287kg) 200 2.500in(sixty three.50mm) one.562in(39.67mm) 78,175lb(35,460kg) 781lb(354kg) 240 three.000in(seventy six.20mm) one.875in(forty seven.63mm) 112,500lb(fifty one,000kg) 1,000lb(450kg

Formnemonicpurposes,belowisanotherpresentationofkeydimensionsfromthesamestandard,expressedinfractionsofaninch(whichwaspartofthethinkingbehindthechoiceofpreferrednumbersintheANSIstandard):

Pitch(inches) Pitchexpressed
ineighths ANSIstandard
chainnumber Width(inches) one4 two8 two5 1eight three8 38 three5 threesixteen onetwo 4eight four1 1four 12 four8 four fivesixteen five8 5eight five three8 34 sixeight six 12 one eight8 eight 58

Notes:
1.Thepitchisthedistancebetweenrollercenters.Thewidthisthedistancebetweenthelinkplates(i.e.slightlymorethantherollerwidthtoallowforclearance).
two.Theright-handdigitofthestandarddenotes0 =normalchain,1 =lightweightchain,5 =rollerlessbushingchain.
3.Theleft-handdigitdenotesthenumberofeighthsofaninchthatmakeupthepitch.
four.An”H”followingthestandardnumberdenotesheavyweightchain.A hyphenatednumberfollowingthestandardnumberdenotesdouble-strand(2),triple-strand(3),andsoon.Thus60H-3denotesnumber60heavyweighttriple-strandchain.
 Atypicalbicyclechain(forderailleurgears)usesnarrow1⁄2-inch-pitchchain.Thewidthofthechainisvariable,anddoesnotaffecttheloadcapacity.Themoresprocketsattherearwheel(historically3-6,nowadays7-12sprockets),thenarrowerthechain.Chainsaresoldaccordingtothenumberofspeedstheyaredesignedtoworkwith,forexample,”10speedchain”.Hubgearorsinglespeedbicyclesuse1/2″x 1/8″chains,where1/8″referstothemaximumthicknessofa sprocketthatcanbeusedwiththechain.

Typicallychainswithparallelshapedlinkshaveanevennumberoflinks,witheachnarrowlinkfollowedbya broadone.Chainsbuiltupwitha uniformtypeoflink,narrowatoneandbroadattheotherend,canbemadewithanoddnumberoflinks,whichcanbeanadvantagetoadapttoa specialchainwheel-distanceontheothersidesucha chaintendstobenotsostrong.

RollerchainsmadeusingISOstandardaresometimescalledasisochains.

 

WHYCHOOSEUS 

one.ReliableQualityAssuranceSystem
two.Reducing-EdgeComputer-ControlledCNCMachines
three.BespokeSolutionsfromHighlyExperiencedSpecialists
four.CustomizationandOEMAvailableforSpecificApplication
five.ExtensiveInventoryofSparePartsandAccessories
six.Well-DevelopedWorldwideMarketingNetwork
seven.EfficientAfter-SaleServiceSystem

 

The219setsofadvancedautomaticproductionequipmentprovideguaranteesforhighproductquality.The167engineersandtechnicianswithseniorprofessionaltitlescandesignanddevelopproductstomeettheexactdemandsofcustomers,andOEMcustomizationsarealsoavailablewithus.Oursoundglobalservicenetworkcanprovidecustomerswithtimelyafter-salestechnicalservices.

Wearenotjustamanufacturerandsupplier,butalsoanindustryconsultant.Weworkpro-activelywithyoutoofferexpertadviceandproductrecommendationsinordertoendupwithamostcosteffectiveproductavailableforyourspecificapplication.TheclientsweserveworldwiderangefromenduserstodistributorsandOEMs.OurOEMreplacementscanbesubstitutedwherevernecessaryandsuitableforbothrepairandnewassemblies.

 

How to decide on a roller chain for a conveyor

When selecting a roller chain for your conveyor, the least difficult way is to refer to the horsepower and RPM charts. The horsepower and rpm of the modest drive sprocket will decide the size and variety of enamel of the chain. Conveyor chains are accessible in a range of options, including shifting goods horizontally, vertically, or around a bend radius. When selecting a conveyor chain, contemplate the purpose of the chain. For example, if you are offering items to customers’ doorsteps, you may possibly pick chains that can move products up and down a hallway or warehouse.

Double pitch

Double pitch roller chains are a well-known way to push agricultural equipment. It has two times the pitch of a standard roller chain and is best for gentle-duty drives. Extended pitch raises efficiency at reduced speeds, but calls for less components per foot than normal one-pitch chains. Compared to single-pitch roller chains, double-pitch chainplates are lengthier and are appropriate for lighter hundreds. Study on to understand more about double pitch chains and how they can increase your operation.
The most common variety of conveyor chain is double pitch. It is employed in the automobile components business, as properly as in the precision machinery market. It is made from the identical components as the standard drive roller chain, apart from it has longer facet plates. Double pitch chains are typically utilised on gradual-transferring conveyors to reduce the tension put on them. Industries that generally use double pitch conveyor chains incorporate airport equipment manufacturers, lumber mills, and fruit packing crops.
RS series roller chains are produced from high-quality stainless metal. It has superb chemical and abrasion resistance and is available in a variety of cord lengths. RS sprockets have more than 30 teeth. They incorporate all the required connection hyperlinks for effortless installation. PEER Chain gives double pitch roller chain attachments such as pre-stretched chains, sprockets, and other attachments.
Double pitch roller chains have several advantages over common chains. Double pitch chains have double the pitch, generating them best for conveying applications such as conveyors. In addition to that, it also gives ANSI-compliant types. These chains also have free connection links. When searching for a double pitch roller chain, be certain to decide on the 1 that fits your specifications and funds. They will final more time and conserve you funds in the extended operate.
Double pitch roller chains to ANSI specifications feature outsized rollers. These chains are very best suited for apps where the merchandise is mounted on prime of the chain. They are excellent for agricultural apps exactly where cotton is on best of the drum. Also, this sort of chain is used in gentle-responsibility conveyors and agricultural apps. You can find double pitch roller chains in a selection of dimensions and variations. And, as prolonged as you know what you want, you may be happy with the benefits.
chain

Self-lubricating

Self-lubricating roller chains eliminate the need to have for guide relubrication, offering extended-lasting procedure and reducing upkeep fees. These chains are specifically popular in industries this kind of as the foods and beverage business, textiles, printing, and sawmills. They can also substitute normal roller chain drives and conveyor chains. Made to the specific common ISO R606, these chains are best replacements for traditional chains. Personal computer chains are particularly advantageous for foodstuff and beverage generation and packaging applications due to their anti-corrosion properties.
Self-lubricating roller chains meet up with ISO, ASME/ANSI, and DIN requirements. They are interchangeable with regular chains of the very same measurement and shape and can be utilised in a selection of industrial applications. Self-lubricating chains have special oil-impregnated sleeves to decrease servicing time. These chains are also suitable for applications the place cleanliness is an concern.
Self-lubricating roller chains are created with unique RS attachments. Rather than a conventional roller chain with an exterior lubricating ring, this variety of chain retains the lubricant inside its bushings. During operation, the application generates heat, heating the lubricant, which flows out of the pin and bushing region. Therefore, CZPT roller chains are perfect for certain meals conveying programs.
In addition to self-lubricating roller chains, carbon metal, stainless steel or nickel-plated metal are also offered. Self-lubricating roller chains are offered in distinct measurements based on the application, like .375″ vast profile straight-chain, extended pin chain, and four-url. In addition, these chains are also accessible in ANSI and BS chain requirements.

Accumulation

Regardless of whether you require to go huge or small hundreds, accumulating roller chains are a practical answer. This chain conveyor is created with lower back again pressure to transport large and cumbersome items with nominal sound. Totally free-operating rollers in the chain support create a sleek construct-up surface. These chains are offered in a variety of alternatives, such as accumulating rollers of distinct pitches.
The accumulation and launch roller chain 14 includes an upper portion 15 and a reduce component 16. The higher component fifteen rests in the higher subspace 28, although the lower component sixteen rests on the prime side twenty of the profile. As the higher belt 15 rolls all around the accumulation roller chain fourteen, it aligns with the lower chain sixteen to sort a ongoing receiving space. This arrangement allows the accumulation roller chain fourteen to rest on the best area of the support profile eleven.
A cumulative roller chain is made up of several individual components. Each and every part of the chain has an elongated cylindrical form and is connected to each other by hinged joints. Every chain segment also has an accumulation and launch roller associated therewith. Every single roller protrudes from the upper side twenty and the lower aspect 21 of the chain part. The accumulation rollers are movable about an axis 22 extending transversely to the longitudinal axis of the chain.
A characteristic of the stacking and releasing roller chain is its simplicity. The conveyor has a profiled section that is completely divided into two cross-sectional spaces. The bottom place is closed from all sides. The upper space accommodates the conveyor line. The contoured part consists of an opening that guides the base strap. A shunt can also be inserted amongst the two sections. The accumulating roller chain program is a hassle-free and functional way to move bulky things.
There are a lot of various types of accumulating roller chains. Some chains have offset rollers for best load distribution. Other individuals have security to avoid device wear. Some run with out lubricant, which is a safety edge. In addition to security, cumulative chains can also offer security. The facet bow edition of the accumulation and launch roller chain with offset accumulation and launch rollers is designed for conveyor systems with really tiny bend radii.
chain

With no bushing

Bushless roller chains are the most typical variety of industrial chain. They are simple in design and style and require only standard maintenance. Typical servicing contains lubricating, evaluating put on, and changing worn sprockets. For a lot more details, you should read through the following data:
The outer chainplates and the internal chain plates are alternately arranged in pairs. The connecting pin extends through the gap in the internal hyperlink plate. The rollers hence positioned can be rotated on the connecting pins. Oil supplied in between the outer circumferential surfaces of every connecting pin serves to lubricate the chain. This program lowers noise and wears triggered by collisions amongst internal chain plates and sprockets.
Compared to classic roller chains, bushings roller chains have rollers around the bushing. These rollers are in rolling speak to with the sprocket enamel, providing lower friction and excellent use resistance. To make certain clean procedure, bushings roller chains must be greased to prevent rust and keep the chain appropriately tensioned. Lubricated chains operate smoother and previous more time.
In a bushingless chain, the interior backlinks are formed like half bushings and journey on the rollers. The pins go by way of the outer plate and connect the inner backlinks to the rollers. The outer plates overlap the internal hyperlinks and open the pins. This technique is also known as a heterochain. This variety of chain is much more frequent than conventional roller chains. If you are not sure which kind of bushingless roller chain to pick, you may need to acquire an further pair of inner chainplates.
Linerless roller chains could also consist of chain guides. In a bushingless roller chain, the outer and interior url plates conform to the surfaces of the information rails. Hence, the large area of get in touch with amongst the chain and the guide rail is eradicated, the friction loss is decreased, and the power transmission efficiency is enhanced. These properties make bushless roller chains a lot more efficient and durable than traditional roller chains. It’s also significantly less noisy. If you are seeking for a chain with a lower noise amount, a bushingless roller chain may be the right selection for you.

China supplier ANSI 200 High Strength and Wear Resistance Industrial Short Pitch Precision Conveyor Roller Chains for Steel Mill and Oil Drilling     near me supplier

China supplier Agricultural Roller Chains Metal Conveyor Chain with Best Sales

Solution Description

Drop Forged Chains “Y” Serial

 

Attributes

• It consists of forged metal hyperlinks, which can be geared up with different plastic or steel scrapers. The relationship pin amongst these links is in a circlip variation.
• Specific heat dealt with alloy metal,drop solid and precision machined, with circumstance hardened.
• High energy, powerful load-carrying ability.
• Very tough exterior area and exceptional dress in
resistance.

Technical Specifications

Product P
(mm)
H
(mm)
B
(mm)
D
(mm)
b
(mm)
T
(mm)
Breaking Load
(Min.)
Material
P100 one hundred thirty 33 14 fifteen.5 13 140KN 40Cr
P125-B 125 35 34 17 seventeen eight 150KN 40Cr
P142 142 50.eight 43 25 19 12.two 180KN 20CrMnTi
300KN 40Cr
P142H 142 50 62 25 29 15 280KN 20CrMnTi
460KN 40Cr
P160 160 40 forty eight twenty 22.five 20 240KN 40Cr
P200 200 sixty four fifty 32 23 fifteen 390KN 40Cr
P200-E two hundred forty five forty two twenty twenty twelve.two 200KN 40Cr

Observe: Customised measurements and material are obtainable on request

 

Roller Conveyor Chains

Characteristics

• It consists of a combination of internal and outer hyperlinks. 
• The bush/pin connections in between the backlinks are obtainable in a circlip, break up pin, or a riveted model. 
• The metal scrapers can be both bent or welded. 
• UHMWPE lights are recommended to attach to the scrapers for much more eficiency and higher use resistance.

GLF Sort

Complex Specifications

Design Pitch
(P)
Scraper
Length
(P1)
Inner
Width
(b)
Plate
Width
(B)
T1 T2 Roller
Dia.
(D)
Bush
Dia.
(D2)
Pin Dia
(D1)
Chain
Width
(L)
E1 E2 Quantity
of Holes
(n)
d Breaking
Load in
KN
(Min.)
GLF66.675
(6)D×182
sixty six.675 266.seven 26 30 6 six 22.23   12.seven 182 90 150 4 9 one hundred thirty
GLF66.675
(6)D×215
sixty six.675 266.7 26 30 six 6 22.23   twelve.seven 215 95 195 4 9 a hundred thirty
GLF66.675
(6)D×295
66.675 266.seven 26 30 six six 22.23   12.7 295 95 195 4 nine one hundred thirty
GLF100
(6)D×170
100 200 38 40 six 6 36 21.6 16 one hundred seventy a hundred and fifteen   two nine 220
GLF100
(6)D×225
100 200 38 forty 6 6 36 21.6 sixteen 225 104 194 four nine 220
GLF100
(6)D×294
100 200 38 40 6 6 36 21.six sixteen 294 115 245 four 9 220
GLF100
(5)×225
one hundred two hundred 28 thirty 5 5 22.23   14.27 225 ninety five 195 four nine 90
GLF125
(8)D×285
a hundred twenty five 500 50 fifty 8 8 32   19.nine 285 a hundred and fifty five 255 four nine 220
GLF125
(6)×235
125 250 32.5 forty six 6 28.fifty eight twenty 14.27 235 ninety five 195 four 9 a hundred and seventy
GLF160
(6)×290
160 320 27 forty five six six 32 20 fourteen.27 290 193   two nine 193

GLR Sort

Technological Requirements

Design Pitch
(P)
Scraper
Distance
(P1)
Interior
Width
(b)
Plate
Width
(B)
T1 T2 Roller
Dia.
(D)
Bush
Dia.
(D2)
Pin Dia
(D1)
Chain
Width
(L)
E1 E2 Variety
of Holes
(n)
d Breaking
Load in
KN
(Min.)
GLR66.675 sixty six.675 266.seven 27.5 thirty 6 six 24   13 one hundred thirty 102 32 four nine ninety
GLR100 one hundred 200 38 forty 6 six 36 21.6 16 a hundred thirty 102 32 4 9 220

 

 
Other items of our conveyor elements:

 

Could you remember to ship me inquiry for specifics?

 

 

Decreasing Downtime We comprehend the require to stayWhen the sprocket is severely worn, the new sprocket and new chain ought to be changed at the very same time to make sure excellent meshing. The new chain or new sprocket can not be changed separately, otherwise, it will cause poor meshing and accelerate the dress in of the new chain or new sprocket. The impression to the proper shows the form of the worn sprocket. This can result in the chain to stick to the sprockets and not operate easily. At this time, the A spot can be ground off or turned above for use (referring to the sprocket utilized for the adjustable surface). The quantity of wear at the joint is determined by the dimension of the chain and the pace of the chain. When the quantity of wear has an effect on the typical operation of the chain generate, corrective measures ought to be taken or connected elements should be replaced.
Do not combine the aged chain with some new chains, or else, vibration will simply happen for the duration of the transmission procedure, which will cause the chain to break.
The chain need to be loaded with lubricating oil in time. Lubricating oil have to enter the suit clearance of rollers and sleeves to improve operating conditions and decrease use.
When the equipment is stored for a prolonged time, the chain must be taken out, cleaned with kerosene or diesel oil, then coated with oil or butter, and saved in a dry place to avoid rust.
up and operating and the value that arrives together with unwanted downtime to repair your tools. Functioning in rural locations and outdoor conditions can put an in depth strain on your machinery and even prolong the time essential to obtain the proper products to make a restore. That’s why our engineering and agricultural chains are constructed to last. Employing Drives Chain by Timken can extend the lifestyle of your products and give you peace of brain.

China supplier Agricultural Roller Chains Metal Conveyor Chain     with Best Sales

China supplier Agricultural Conveyor 08b-1 B Series Short Pitch Precision Simplex Roller Chains and Bush Chains with Link with Good quality

Product Description

B Series Short pitch Precision Simplex Roller Chains & Bush Chains

 

ISO/DIN
Chain No.
Pitch

P
mm

Roller diameter

d1max
mm

Width amongst inner plates
b1min
mm
Pin diameter

d2max
mm

Pin duration Inner plate depth
h2max
mm
Plate thickness

t/Tmax
mm

Tensile strength

Qmin
kN/lbf

Average tensile energy
Q0
kN
Weight for each meter
q
kg/m
Lmax
mm
Lcmax
mm
08B-1 12.700 8.51 seven.seventy five four.forty five sixteen.70 eighteen.two eleven.80 one.sixty eighteen./4091 19.four .69

*Straight aspect plates
 

ROLLER CHAIN

Roller chain or bush roller chain is the sort of chain drive most commonly utilized for transmission of mechanical energy on many sorts of domestic, industrial and agricultural machinery, including conveyors, wire- and tube-drawing equipment, printing presses, vehicles, motorcycles, and bicycles. It is composed of a series of limited cylindrical rollers held together by side backlinks. It is driven by a toothed wheel known as a sprocket. It is a simple, trustworthy, and successful implies of power transmission.

Design OF THE CHAIN

Two distinct dimensions of roller chain, exhibiting development.
There are 2 kinds of backlinks alternating in the bush roller chain. The first type is internal back links, having 2 internal plates held jointly by 2 sleeves or bushings on which rotate 2 rollers. Internal backlinks alternate with the second sort, the outer links, consisting of 2 outer plates held collectively by pins passing by way of the bushings of the internal back links. The “bushingless” roller chain is similar in procedure however not in design as an alternative of independent bushings or sleeves holding the interior plates collectively, the plate has a tube stamped into it protruding from the gap which serves the very same purpose. This has the advantage of eliminating 1 stage in assembly of the chain.

The roller chain style reduces friction in contrast to easier styles, resulting in greater effectiveness and much less put on. The authentic electrical power transmission chain varieties lacked rollers and bushings, with the two the interior and outer plates held by pins which straight contacted the sprocket enamel even so this configuration exhibited extremely rapid use of each the sprocket tooth, and the plates in which they pivoted on the pins. This dilemma was partially solved by the development of bushed chains, with the pins keeping the outer plates passing by way of bushings or sleeves connecting the interior plates. This distributed the use more than a greater region nonetheless the enamel of the sprockets even now wore more rapidly than is attractive, from the sliding friction against the bushings. The addition of rollers surrounding the bushing sleeves of the chain and offered rolling contact with the tooth of the sprockets ensuing in exceptional resistance to put on of both sprockets and chain as effectively. There is even really low friction, as prolonged as the chain is sufficiently lubricated. Continuous, clean, lubrication of roller chains is of primary significance for successful procedure as properly as appropriate tensioning.

LUBRICATION

Several driving chains (for instance, in manufacturing facility tools, or driving a camshaft within an interior combustion motor) work in thoroughly clean environments, and hence the donning surfaces (that is, the pins and bushings) are protected from precipitation and airborne grit, many even in a sealed atmosphere this kind of as an oil bathtub. Some roller chains are developed to have o-rings created into the area between the outside link plate and the inside roller link plates. Chain manufacturers began to incorporate this feature in 1971 after the software was invented by Joseph Montano while working for Whitney Chain of Hartford, Connecticut. O-rings were provided as a way to boost lubrication to the backlinks of electricity transmission chains, a service that is vitally crucial to extending their functioning daily life. These rubber fixtures form a barrier that retains manufacturing unit utilized lubricating grease inside of the pin and bushing put on regions. More, the rubber o-rings avoid filth and other contaminants from getting into within the chain linkages, the place these kinds of particles would normally trigger significant wear.[citation essential]

There are also several chains that have to work in filthy conditions, and for dimension or operational motives cannot be sealed. Examples incorporate chains on farm products, bicycles, and chain saws. These chains will necessarily have fairly high rates of dress in, specifically when the operators are ready to settle for more friction, less performance, much more sounds and more frequent replacement as they neglect lubrication and adjustment.

Numerous oil-dependent lubricants attract dust and other particles, at some point forming an CZPT paste that will compound use on chains. This problem can be circumvented by use of a “dry” PTFE spray, which forms a solid film following application and repels both particles and humidity.

VARIANTS Layout

Layout of a roller chain: 1. Outer plate, 2. Inner plate, 3. Pin, 4. Bushing, 5. Roller
If the chain is not becoming used for a high wear software (for occasion if it is just transmitting movement from a hand-operated lever to a control shaft on a machine, or a sliding door on an oven), then 1 of the easier varieties of chain could nonetheless be utilized. Conversely, where added toughness but the sleek travel of a smaller pitch is needed, the chain might be “siamesed” as an alternative of just 2 rows of plates on the outer sides of the chain, there may be 3 (“duplex”), 4 (“triplex”), or far more rows of plates operating parallel, with bushings and rollers in between every single adjacent pair, and the identical amount of rows of tooth working in parallel on the sprockets to match. Timing chains on automotive engines, for instance, typically have numerous rows of plates named strands.

Roller chain is made in a number of sizes, the most widespread American Nationwide Requirements Institute (ANSI) expectations currently being 40, fifty, 60, and eighty. The very first digit(s) reveal the pitch of the chain in eighths of an inch, with the previous digit getting 0 for normal chain, 1 for light-weight chain, and 5 for bushed chain with no rollers. As a result, a chain with 50 percent-inch pitch would be a #40 although a #160 sprocket would have teeth spaced 2 inches aside, and so on. Metric pitches are expressed in sixteenths of an inch therefore a metric #8 chain (08B-1) would be equivalent to an ANSI #40. Most roller chain is produced from simple carbon or alloy steel, but stainless metal is used in foodstuff processing equipment or other areas where lubrication is a problem, and nylon or brass are occasionally observed for the same explanation.

Roller chain is ordinarily hooked up using a master website link (also acknowledged as a connecting url), which typically has 1 pin held by a horseshoe clip instead than friction fit, making it possible for it to be inserted or removed with basic equipment. Chain with a removable url or pin is also known as cottered chain, which enables the length of the chain to be altered. Fifty percent hyperlinks (also recognized as offsets) are offered and are employed to enhance the duration of the chain by a single roller. Riveted roller chain has the master link (also recognized as a connecting url) “riveted” or mashed on the finishes. These pins are made to be tough and are not removable.

USE

An case in point of 2 ‘ghost’ sprockets tensioning a triplex roller chain method
Roller chains are used in reduced- to mid-pace drives at close to 600 to 800 ft for each minute nevertheless, at increased speeds, all around 2,000 to 3,000 feet for each minute, V-belts are generally used thanks to wear and sounds issues.
A bicycle chain is a form of roller chain. Bicycle chains might have a master link, or may require a chain tool for elimination and set up. A similar but greater and hence more robust chain is utilised on most motorcycles even though it is occasionally changed by either a toothed belt or a shaft drive, which supply decrease sound level and fewer routine maintenance requirements.
The great greater part of vehicle engines use roller chains to generate the camshaft(s). Very higher performance engines usually use equipment generate, and starting up in the early sixties toothed belts ended up used by some makers.
Chains are also utilised in forklifts making use of hydraulic rams as a pulley to CZPT and reduced the carriage nevertheless, these chains are not deemed roller chains, but are categorised as elevate or leaf chains.
Chainsaw cutting chains superficially resemble roller chains but are more closely related to leaf chains. They are pushed by projecting generate back links which also serve to identify the chain on to the bar.

Sea Harrier FA.2 ZA195 entrance (cold) vector thrust nozzle – the nozzle is rotated by a chain generate from an air motor
A possibly strange use of a pair of bike chains is in the Harrier Bounce Jet, in which a chain drive from an air motor is utilised to rotate the movable motor nozzles, permitting them to be pointed downwards for hovering flight, or to the rear for normal ahead flight, a system recognized as Thrust vectoring.

Use

 

The effect of use on a roller chain is to improve the pitch (spacing of the links), creating the chain to expand lengthier. Observe that this is because of to wear at the pivoting pins and bushes, not from true stretching of the metallic (as does occur to some adaptable steel parts such as the hand-brake cable of a motor vehicle).

With CZPT chains it is uncommon for a chain (other than that of a bicycle) to dress in right up until it breaks, given that a worn chain prospects to the fast onset of put on on the tooth of the sprockets, with greatest failure being the loss of all the teeth on the sprocket. The sprockets (in specific the scaled-down of the two) suffer a grinding motion that places a characteristic hook condition into the pushed encounter of the enamel. (This effect is created worse by a chain improperly tensioned, but is unavoidable no make a difference what treatment is taken). The worn enamel (and chain) no lengthier supplies easy transmission of electrical power and this might turn out to be evident from the noise, the vibration or (in car engines using a timing chain) the variation in ignition timing witnessed with a timing light-weight. Equally sprockets and chain need to be replaced in these circumstances, considering that a new chain on worn sprockets will not previous extended. Nevertheless, in much less extreme situations it may be achievable to save the larger of the 2 sprockets, since it is often the smaller sized 1 that suffers the most wear. Only in quite mild-bodyweight apps this sort of as a bicycle, or in extreme situations of improper stress, will the chain normally soar off the sprockets.

The lengthening due to dress in of a chain is calculated by the adhering to formula:

M = the duration of a number of backlinks measured

S = the amount of backlinks calculated

P = Pitch

In market, it is normal to keep track of the motion of the chain tensioner (no matter whether handbook or computerized) or the actual duration of a drive chain (a single rule of thumb is to replace a roller chain which has elongated 3% on an adjustable push or 1.5% on a fixed-middle travel). A simpler strategy, particularly ideal for the cycle or motorcycle consumer, is to try to pull the chain away from the more substantial of the 2 sprockets, while making certain the chain is taut. Any significant motion (e.g. making it feasible to see via a gap) most likely indicates a chain worn up to and past the restrict. Sprocket hurt will end result if the difficulty is overlooked. Sprocket dress in cancels this influence, and could mask chain put on.

CHAIN Strength

The most typical evaluate of roller chain’s energy is tensile strength. Tensile toughness represents how considerably load a chain can endure below a one-time load prior to breaking. Just as essential as tensile toughness is a chain’s fatigue energy. The vital variables in a chain’s exhaustion energy is the good quality of steel employed to manufacture the chain, the heat treatment method of the chain parts, the high quality of the pitch gap fabrication of the linkplates, and the variety of shot furthermore the intensity of shot peen coverage on the linkplates. Other elements can include the thickness of the linkplates and the design (contour) of the linkplates. The rule of thumb for roller chain working on a continuous generate is for the chain load to not CZPT a mere 1/6 or 1/9 of the chain’s tensile toughness, relying on the type of grasp hyperlinks utilized (press-suit vs. slip-match)[quotation necessary]. Roller chains running on a continuous push beyond these thresholds can and typically do are unsuccessful prematurely by means of linkplate fatigue failure.

The common minimum supreme energy of the ANSI 29.1 steel chain is 12,five hundred x (pitch, in inches)two. X-ring and O-Ring chains drastically lessen put on by implies of inner lubricants, escalating chain daily life. The internal lubrication is inserted by signifies of a vacuum when riveting the chain together.

CHAIN STHangZhouRDS

Requirements companies (such as ANSI and ISO) maintain requirements for design and style, dimensions, and interchangeability of transmission chains. For case in point, the subsequent Desk displays data from ANSI normal B29.1-2011 (Precision Electrical power Transmission Roller Chains, Attachments, and Sprockets) developed by the American Modern society of Mechanical Engineers (ASME). See the references[8][9][ten] for extra information.

ASME/ANSI B29.1-2011 Roller Chain Regular SizesSizePitchMaximum Roller DiameterMinimum Final Tensile StrengthMeasuring Load25

ASME/ANSI B29.1-2011 Roller Chain Regular Sizes
Dimension Pitch Maximum Roller Diameter Minimal Greatest Tensile Power Measuring Load
25 .250 in (6.35 mm) .one hundred thirty in (3.thirty mm) 780 lb (350 kg) eighteen lb (8.2 kg)
35 .375 in (9.53 mm) .two hundred in (5.08 mm) 1,760 lb (800 kg) eighteen lb (8.2 kg)
forty one .500 in (twelve.70 mm) .306 in (7.seventy seven mm) one,five hundred lb (680 kg) 18 lb (8.2 kg)
40 .five hundred in (12.70 mm) .312 in (7.92 mm) 3,a hundred twenty five lb (1,417 kg) 31 lb (14 kg)
50 .625 in (15.88 mm) .four hundred in (10.sixteen mm) four,880 lb (2,210 kg) 49 lb (22 kg)
sixty .750 in (19.05 mm) .469 in (eleven.91 mm) 7,030 lb (3,one hundred ninety kg) 70 lb (32 kg)
eighty 1.000 in (25.40 mm) .625 in (15.88 mm) 12,five hundred lb (5,seven hundred kg) a hundred twenty five lb (fifty seven kg)
a hundred one.250 in (31.seventy five mm) .750 in (19.05 mm) 19,531 lb (8,859 kg) 195 lb (88 kg)
a hundred and twenty one.500 in (38.ten mm) .875 in (22.23 mm) 28,a hundred twenty five lb (twelve,757 kg) 281 lb (127 kg)
a hundred and forty one.750 in (forty four.45 mm) 1.000 in (25.forty mm) 38,280 lb (17,360 kg) 383 lb (174 kg)
a hundred and sixty two.000 in (fifty.eighty mm) one.a hundred twenty five in (28.58 mm) fifty,000 lb (23,000 kg) five hundred lb (230 kg)
180 two.250 in (57.15 mm) one.460 in (37.08 mm) 63,280 lb (28,seven-hundred kg) 633 lb (287 kg)
two hundred two.five hundred in (sixty three.fifty mm) one.562 in (39.67 mm) seventy eight,175 lb (35,460 kg) 781 lb (354 kg)
240 3.000 in (76.twenty mm) 1.875 in (forty seven.sixty three mm) 112,500 lb (fifty one,000 kg) one,000 lb (450 kg

For mnemonic functions, underneath is another presentation of important dimensions from the exact same normal, expressed in fractions of an inch (which was component of the thinking driving the decision of desired figures in the ANSI regular):

Pitch (inches) Pitch expressed
in eighths
ANSI normal
chain quantity
Width (inches)
14 twoeight 2five 1eight
3eight threeeight 3five 316
1two foureight 4one 14
one2 4eight four five16
fiveeight five8 five threeeight
threefour sixeight six 1two
one eight8 eight 5eight

Notes:
one. The pitch is the length between roller facilities. The width is the length in between the url plates (i.e. slightly a lot more than the roller width to allow for clearance).
two. The right-hand digit of the normal denotes 0 = regular chain, 1 = light-weight chain, 5 = rollerless bushing chain.
three. The still left-hand digit denotes the number of eighths of an inch that make up the pitch.
four. An “H” pursuing the regular number denotes heavyweight chain. A hyphenated variety pursuing the common amount denotes double-strand (2), triple-strand (3), and so on. Hence 60H-3 denotes quantity sixty heavyweight triple-strand chain.
 A typical bicycle chain (for derailleur gears) utilizes slender 1⁄2-inch-pitch chain. The width of the chain is variable, and does not influence the load potential. The a lot more sprockets at the rear wheel (traditionally 3-6, nowadays 7-twelve sprockets), the narrower the chain. Chains are sold according to the amount of speeds they are created to perform with, for instance, “10 velocity chain”. Hub equipment or solitary speed bicycles use 1/2″ x 1/8″ chains, exactly where 1/8″ refers to the optimum thickness of a sprocket that can be utilised with the chain.

Generally chains with parallel formed backlinks have an even amount of backlinks, with every slender hyperlink adopted by a broad 1. Chains developed up with a uniform variety of link, slender at 1 and broad at the other conclude, can be manufactured with an odd variety of hyperlinks, which can be an advantage to adapt to a special chainwheel-length on the other side such a chain tends to be not so robust.

Roller chains manufactured using ISO regular are often referred to as as isochains.

 

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Transmission traits of the chain
It is typically acknowledged that the chain has become an economical component in transmission and conveying tools because of to its lower pace and high load. In exercise, however, a lot of chains are also used in substantial-velocity conditions, this sort of as the camshaft drive system of a automobile engine.
one. Simply accommodates up to 7:1 deceleration/acceleration.
two. The chain can adapt to long middle distances and is much more widely employed.
three. The chain is straightforward to understand multi-axis transmission or chain transmission on the two sides.
4. The chain is standardized, and the variety is basic and simple.
5. Effortless to reduce and hook up the chain.
6. In order to transmit the very same torque, the diameter of the sprocket of the chain method is Our agricultural machinery chains satisfy every single conceivable need to have and are offered in a range of sizes and requirements. Nevertheless, what all our chains have in common is our professional determination to good quality. Understanding that you have entry to a chain you can trust can make all the big difference and give you peace of brain. We know you need to have dependable and high quality agricultural chains, not chains that extend and can lead to downtime, and work difficult to ensure our buyers always know our precision chains will work – certain. While no agricultural procedure can be predicted to be free of downtime, our aim is to reduce lost time by delivering farmers with the elements they require to hold all of their equipment in best problem. Daily dress in and tear is predicted and can be prepared, but we try out to reduce the likelihood of unplanned downtime due to not possessing the proper chain available.
smaller sized than the diameter of the pulley.
seven. Sprockets wear significantly less than gears since the sprockets are able to distribute the load over a lot of sprocket enamel.
8. Via the improve of vibration triggered by use elongation or put on elongation, it can be known regardless of whether the support existence of the chain has been arrived at, which is easy to notice and master.

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