China wholesaler ISO Standard Duplex Roller Chain

Product Description

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

Our company

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

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

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

Our workshop

Our certification

Welcome to our exhibition


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

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

Q3. What is your terms of delivery?

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

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

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

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

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

Standard or Nonstandard: Standard
Application: Textile Machinery, Garment Machinery, Conveyer Equipment, Packaging Machinery, Food Machinery, Marine, Mining Equipment
Surface Treatment: Oil Blooming
Structure: Roller Chain
Material: Carbon Steel
Type: Short Pitch Chain
US$ 0/Piece
1 Piece(Min.Order)

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Customized Request

duplex chain

How do duplex chains handle variable speed applications?

Duplex chains are capable of handling variable speed applications with proper design and maintenance considerations. Here are some key points to understand:

  • Sprocket Selection: In variable speed applications, it’s essential to select appropriate sprockets that can accommodate the desired speed range. Sprockets with varying numbers of teeth or adjustable centers can be used to achieve different speeds.
  • Tensioning: Proper tensioning of the duplex chain is crucial in variable speed applications. The chain should be tensioned to a level that allows for smooth operation and prevents excessive slack or tightness. The tension should be adjusted based on the speed and load requirements.
  • Lubrication: Adequate lubrication is essential to reduce friction and wear in variable speed applications. The lubricant should be selected based on the speed and temperature requirements, and regular lubrication intervals should be followed to maintain optimal performance.
  • Maintenance: Regular inspection and maintenance are important in variable speed applications to detect any signs of wear or damage. Prompt replacement of worn components and proper adjustment of the chain tension are necessary to ensure smooth and reliable operation.
  • Proper Design: The overall design of the system should consider the variable speed requirements, including factors such as load variations, acceleration, and deceleration. The selection of the duplex chain and associated components should be based on the specific application requirements to ensure durability and performance.

It’s important to consult with chain manufacturers or industry experts when designing and selecting duplex chains for variable speed applications. They can provide guidance on the appropriate chain size, sprocket selection, lubrication requirements, and maintenance practices to ensure reliable and efficient operation in variable speed conditions.

duplex chain

How do duplex chains handle misalignment between sprockets?

Duplex chains are designed to handle a certain degree of misalignment between sprockets. However, excessive misalignment can lead to premature wear and reduced chain life. Here are some key points to understand:

  • Duplex chains can tolerate small misalignments between sprockets due to their flexible construction. The side plates and link connections allow for some angular and axial movement.
  • Minor misalignments can be accommodated through the natural flexing and articulation of the chain as it engages with the sprockets. This flexibility helps the chain to adjust and maintain proper engagement with the sprocket teeth.
  • However, it is important to note that excessive misalignment should be avoided. Excessive misalignment can cause the chain to experience increased wear, uneven load distribution, and increased stress on the chain components.
  • To minimize misalignment-related issues, it is recommended to ensure proper alignment of the sprockets during installation. This includes aligning the sprockets parallel to each other and ensuring the correct center-to-center distance.
  • Regular inspection and maintenance of the chain drive system are also essential to identify any misalignment issues early on and take corrective measures.
  • In cases where significant misalignment is unavoidable, special chain types or guides can be considered to mitigate the effects of misalignment and improve the chain’s performance and longevity.

Overall, while duplex chains can tolerate some misalignment, it is important to strive for proper sprocket alignment during installation and regular maintenance to optimize the chain’s performance and lifespan.

duplex chain

What are the signs of duplex chain wear and when should it be replaced?

Identifying the signs of duplex chain wear is crucial for maintaining optimal performance and preventing unexpected failures. Here are some common indicators of duplex chain wear:

  • Chain elongation: One of the primary signs of chain wear is elongation, which occurs due to the stretching of the chain’s components over time. To check for elongation, you can measure the distance between a specific number of chain links and compare it to the original pitch length. If the measurement exceeds the recommended elongation limit, it indicates significant wear.
  • Increased noise and vibration: As a duplex chain wears, it can produce increased noise and vibration during operation. This can be attributed to the irregular engagement of the chain with the sprockets, resulting in a noisy and unstable transmission.
  • Visible signs of wear: Inspecting the chain visually can reveal visible signs of wear, such as worn-out or deformed rollers, elongated pin holes, or signs of corrosion or rust. These visible indications suggest that the chain has reached an advanced stage of wear.
  • Poor tension and alignment: A worn duplex chain may exhibit poor tension, causing slack or excessive tightness. Additionally, it may fail to align properly with the sprockets, leading to misalignment and increased wear on the chain and sprocket teeth.
  • Frequent chain failures: If a duplex chain starts experiencing frequent failures, such as breaking or jumping off the sprockets, it is a clear sign of excessive wear and the need for replacement.

As for the replacement of a worn duplex chain, it is generally recommended to replace the chain once it has reached its maximum allowable elongation limit or when any significant signs of wear or damage are present. Following the manufacturer’s guidelines regarding maintenance intervals and wear limits is essential in determining the appropriate time for replacement.

Regular inspections, routine maintenance, and proactive replacement of worn duplex chains are essential practices to ensure the safe and reliable operation of the chain drive system.

China wholesaler ISO Standard Duplex Roller Chain  China wholesaler ISO Standard Duplex Roller Chain
editor by CX 2023-10-26