China wholesaler Industrial Transmission Gear Reducer Conveyor Parts China Standard C208ah/C208ahl Double Pitch Conveyor Chains

Product Description

Double Pitch Conveyor Chains

         ISO                Chain No.     ANSI Chain No. Pitch
P
mm
Roller diameter
d1max
mm
Width between inner plates
b1min
mm
Pin diameter
d2 max
mm
Pin length Inner plate depth
h2 max
mm
Plate thickness
T max
mm
Tensile strength
Q min
kN/lbf
Average tensile strength
Q0
kN
Weight per  meter
q
kg/m
Lmax  mm Lcmax    mm
C208AH C2040H 25.4 7.95 7.85 3.96 18.8 19.9 12 2.03 14.1/3205 17.2 0.65
C208AHL C2042H 15.88 1.00

CONVEYOR CHAIN DESIGNED AND MANUFACTURED FOR THE MOST DEMXIHU (WEST LAKE) DIS. OF ENVIRONMENTS

HangZhou Star Machine Technology Co.,ltd.  provides the highest quality materials and manufacturing methods to suit the most arduous of conveyor chain applications  – from the transport of biomass fuels, to the recycling industry, paper & pulp, cement, steel-work, the wood industry and food processing.
Our conveyor chains, sprocket wheels and attachments are case-hardened to achieve the optimum balance between strength, durability and resistance to wear.
Our manufacturing is focused on metric pitch conveyor chains that include:
International Standards DIN 8167/ISO 1977 M series
DIN 8165/ISO 1977 FV series
SMS 1968 S series

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.

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.

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

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.

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 for additonal information.

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

WHY CHOOSE US 
 

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

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.

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Electric Cars, Motorcycle, Food Machinery, Marine, Mining Equipment, Agricultural Machinery, Car, Food and Beverage Industry, Motorcycle Parts
Surface Treatment: Polishing, Polishing
Structure: Roller Chain, Roller Chain
Material: Alloy, Alloy
Type: Double Pitch Chain
Samples:
US$ 0/Meter
1 Meter(Min.Order)

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Customization:
Available

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gear chain

What are the safety precautions when working with gear chains?

Working with gear chains requires following specific safety precautions to prevent accidents, injuries, and damage to equipment. Here are some important safety measures to consider:

1. Proper Training:

– Ensure that personnel working with gear chains are adequately trained on the proper handling, installation, and maintenance procedures. Training should include an understanding of the equipment’s operating principles and safety guidelines.

2. Personal Protective Equipment (PPE):

– Use appropriate PPE, such as safety goggles, gloves, and protective clothing, to protect against potential hazards, including flying debris, pinching, or contact with moving parts.

3. Lockout/Tagout:

– Follow lockout/tagout procedures when performing maintenance or repairs on gear chains. This ensures that the equipment is properly isolated and de-energized to prevent unexpected movement or startup.

4. Equipment Inspection:

– Regularly inspect the gear chain and associated components for any signs of wear, damage, or misalignment. Replace worn or damaged parts promptly to maintain safe operation.

5. Guarding:

– Install appropriate guards and protective enclosures around the gear chain to prevent accidental contact with moving parts. This helps to minimize the risk of entanglement or injuries.

6. Proper Lifting and Handling:

– Use proper lifting techniques and equipment when handling heavy gear chains or components. Avoid overexertion and follow ergonomic practices to prevent strains or injuries.

7. Safe Work Environment:

– Maintain a clean and well-organized work area around the gear chain. Remove any obstructions or tripping hazards to ensure safe access and operation.

8. Regular Maintenance:

– Follow the manufacturer’s recommended maintenance schedule for the gear chain. Regular inspections, lubrication, and adjustments are essential for safe and reliable operation.

9. Emergency Procedures:

– Establish and communicate emergency procedures to respond to potential accidents or malfunctions involving the gear chain. Train personnel on these procedures to ensure a swift and effective response.

By adhering to these safety precautions, operators and maintenance personnel can minimize the risks associated with working with gear chains and create a safer working environment. It is important to consult the specific safety guidelines provided by the gear chain manufacturer and comply with any applicable safety regulations and standards.

gear chain

What are the noise levels associated with a gear chain?

The noise levels associated with a gear chain can vary depending on several factors. Here are some considerations:

1. Design and Quality: The design and quality of the gear chain play a significant role in determining the noise levels. Well-designed gear chains with proper tooth profiles and precise manufacturing techniques tend to generate less noise.

2. Lubrication: Insufficient or improper lubrication can lead to increased friction and noise in the gear chain. Adequate lubrication helps reduce noise by minimizing metal-to-metal contact and ensuring smooth operation.

3. Load and Speed: Higher loads and speeds can increase the noise levels in a gear chain. The impact of teeth engagement and meshing forces can produce sound, especially under heavy operating conditions.

4. Misalignment and Wear: Misalignment or excessive wear in the gear chain can result in increased noise due to uneven tooth engagement and irregular motion.

5. Surrounding Environment: The noise generated by a gear chain can also be influenced by the surrounding environment. Factors such as reflective surfaces, structural vibrations, and acoustics of the workspace can impact the perceived noise levels.

To reduce the noise levels associated with a gear chain, several measures can be taken:

– Ensure proper lubrication and maintenance of the gear chain to minimize friction and wear.

– Use high-quality gear chains with precise tooth profiles and smooth operation.

– Optimize the operating conditions, including load, speed, and alignment.

– Implement noise reduction measures in the surrounding environment, such as sound-absorbing materials or enclosures.

It’s important to note that while efforts can be made to reduce noise, some level of sound may still be present in gear chain systems. Therefore, it’s recommended to assess the specific noise requirements and consider additional noise mitigation strategies if necessary.

gear chain

What are the different types of gear chains available?

There are several different types of gear chains available, each designed for specific applications and operating conditions. Here are some commonly used types:

– Roller Chains: Roller chains are one of the most common types of gear chains. They consist of rollers that engage with the teeth of the sprockets, providing smooth and efficient power transmission. Roller chains are widely used in various industries and applications, including automotive, industrial machinery, and agricultural equipment.

– Silent Chains: Silent chains, also known as inverted-tooth chains, are designed to minimize noise and vibration during operation. They feature specialized tooth profiles that engage with the sprockets without impact, resulting in quieter and smoother operation. Silent chains are commonly used in power transmission applications where noise reduction is critical, such as in automotive engines and precision machinery.

– Leaf Chains: Leaf chains are made up of interconnected links that resemble leaves, hence the name. They are known for their high tensile strength and are commonly used in applications requiring heavy-duty lifting or tensioning, such as forklifts, cranes, and hoists.

– PIV Chains: PIV (Parallel Indexing and Versatility) chains are specifically designed for parallel indexing applications, where precise motion control and accurate positioning are required. These chains have specialized tooth profiles that allow for smooth and precise movement, making them suitable for applications such as packaging machinery and indexing tables.

– Double-Pitch Chains: Double-pitch chains have a longer pitch than standard roller chains, which makes them ideal for applications that require slower speeds and lighter loads. They are commonly used in conveyor systems, agricultural equipment, and material handling applications.

– Accumulation Chains: Accumulation chains are designed for applications where product accumulation or indexing is required. These chains feature special attachments or profiles that allow for controlled movement and accumulation of products on the conveyor. They are often used in assembly lines, packaging systems, and material handling applications.

– Timing Chains: Timing chains are used in engines and precision machinery to synchronize the rotation of the crankshaft and camshaft. These chains feature precise tooth profiles and are designed to withstand high speeds and heavy loads while maintaining accurate timing.

These are just a few examples of the different types of gear chains available. The choice of the appropriate gear chain depends on the specific requirements of the application, including load capacity, speed, noise level, precision, and operating conditions.

China wholesaler Industrial Transmission Gear Reducer Conveyor Parts China Standard C208ah/C208ahl Double Pitch Conveyor Chains  China wholesaler Industrial Transmission Gear Reducer Conveyor Parts China Standard C208ah/C208ahl Double Pitch Conveyor Chains
editor by CX 2023-08-05

gear chain

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