28A / ASA 140 Roller Chains According to DIN 8188
28A / ASA 140 roller chains (1 3/4″ × 1″) 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 28A / ASA 140 chains includes simplex, duplex and triplex variants.
Chains Construction
- Inner link
- Outer link
- Pin
- Bushing
- Roller
Chains Fields of Use
28A / ASA 140 roller chains are designed for general applications, particularly in medium and heavy industry.
They are primarily used as drive chains but can also be fitted with attachments for material handling and lifting.
Chains Material
Steel.
Chains Code Description
Example:
28A-2 KÖBO (ASA 140-2, 1 3/4″ × 1″, DIN 8188) - 5 m Pack
| Code Part | Description |
|---|---|
| 28A |
Chain type (ISO 606 / DIN 8188, A-series) |
| 2 |
Duplex roller chain |
| KÖBO |
Manufacturer |
| ASA 140-2 |
Chain designation according to ANSI B29.1 standard (USA) |
| 1 3/4″ × 1″ |
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 ASA/ANSI Roller Chains
TYMA CZ Data Sheets
Czech and English (PDF 374.73 kB)
Related Products
Sprockets for DIN 8188 ASA/ANSI Roller Chains (A-Series)
For DIN 8188 roller chains (04C, 06C, 08A, 10A, 12A, 16A, 20A, 24A). In simplex, duplex, and triplex design. With a hub or flat design.
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.
