20A / ASA 100 Roller Chains According to DIN 8188
20A / ASA 100 roller chains (1 1/4″ × 3/4″) are among the most common drive chains. They are standardized according to ISO 606 (DIN 8188, ANSI B29.1), meaning they belong to the American A-series.
The chains consist of outer links with pins and inner links with bushes, on which freely rotating rollers are mounted. The chains are made of steel. The exact grade of steel, production method and heat treatment of the steel of the individual parts vary by chain type, size and manufacturer.
The standard design of 20A / ASA 100 chains includes simplex, duplex and triplex variants.
Chain Construction
- Inner link
- Outer link
- Pin
- Bushing
- Roller
Typical Applications
20A / ASA 100 roller chains are designed for general applications, particularly in medium industry.
They are primarily used as drive chains but can also be fitted with attachments for material handling and lifting.
Materials
Steel.
Chain Code Description
Example:
20A-3 Standard (ASA 100-3, 1 1/4″ × 3/4″, DIN 8188) - 5 m Pack
| Code Part | Description |
|---|---|
| 20A |
Chain type (ISO 606 / DIN 8188, A-series) |
| 3 |
Triplex roller chain |
| Standard |
Chain marking |
| ASA 100-3 |
Chain designation according to ANSI B29.1 standard (USA) |
| 1 1/4″ × 3/4″ |
Pitch × internal width |
| DIN 8188 |
American chain standard (A-series) |
| 5 m Pack |
Standard pack length |
Documents for Download
Dimensions and Parameters of DIN 8188 Standard Roller Chains
TYMA CZ Data Sheets
Czech and English (PDF 721.65 kB)
Related Products
20A / ASA 100 Sprockets with Hub for DIN 8188 Roller Chains (A-Series)
Universal Chain Tensioners
Sliding blocks, sprockets with screw and idler sprockets for tensioning of industrial roller chains during operation.
Sliding Chain Guides for Separate Mounting
Standard chain sliding guides fixed separately directly on the machines.
Chain Wear Gauges
Mechanical devices designed to roller chains, fleyer chains and other types of lifting and drive chains wear detection.
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