Introduction to the chain
Chains can be divided into several categories based on their structure and use.
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roller chain Suitable for thousands of applications. Roller chains are also known as drive chains or drive chains. |
Special chains A chain that differs from a standard chain due to material, coating, or attachment. |
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Conveyor chains Ideal for applications where items need to be transported. |
Plate chains Suitable for forklifts and other lifting applications. |
An integral part of a roller chain
Each roller chain is made up of the same key components. The diagram above shows how they are combined to form a chain.
It usually only takes 3 measurements to identify the chain:
- (i) Spacing
- (b) Width between inner plates
- (c) Roller diameter
Chain standard
European standards
Chains manufactured according to the above standards are subject to ISO606 and DIN 8187. These standards cover 3 versions:
- simplex
- Compound
- triple
The pitch size can range from 4 mm (0.158 in.) to 114.3 mm (4.500 in). They are characterized by large pin diameters, especially for larger pitch sizes. Due to the larger bearing area, it has better wear resistance
ISO standards have a simple form of part numbering, such as:
- The 1/2-inch pitch double chain is 08B-2.
- The first two digits are pitch sizes in 1/16 inch, so 08 = 8/16 or 1/2 inch.
- The letter "B" stands for European standard.
- The suffix 2 indicates the number of chains in the chain, which in this case is double-stranded.
American Standards
ISO 606, ANSI B29.1 and DIN 8188 cover the American standard chain and cover eight versions.
- For European standard chains, SIMPLEX, DUPLEX and TRIPLEX.
- Quadruple, 4 strands.
- Quintych, 5 strands.
- SEXTUPLEX, 6 SHARES.
- OCTUPLEX, 8 SHARES.
- DECPLEX, 10 shares.
The standard covers pitch sizes ranging from 1/4 to 3 inch pitch. The pin diameter of the American standard chain is smaller than that of the European standard chain. As a result, abrasion resistance will be reduced compared to European standard chains, with the exception of 5/8-inch pitches. In this case, the pin and bushing diameter in the American standard chain are larger.
American standard chains typically use the ANSI standard numbering system, such as ANSI 40-2 for 1/2-inch pitch duplex chains.
Here's how the ANSI numbering system works:
- The first number is the pitch size in 1/8 inch, i.e., 4/8 = 1/2 inch pitch. The second number indicates that the chain is a roller chain and 0 = roller chain. Use 5 instead of 0 for the sleeve chain.
- The suffix, like the European standard chain, refers to the number of strands in the chain, i.e. 2 = double chain.
- The suffix, like the European standard chain, refers to the number of strands in the chain, i.e. 2 = double chain.
ANSI chains are also available in heavy-duty options with thicker plates (H) and hardened pins (V). ANSI heavy chains will be designated using these suffixes. IE。 ANSI 140-2HV Duplex, Heavy Plate, Through-Hard Pins ANSI 80H Simplex, Heavy Plate