24A / ASA 120 Sprockets with Hub for DIN 8188 Roller Chains (A-Series)
24A / ASA 120 sprockets with a hub are designed for drives with all types of 24A / ASA 120 (1 1/2″ × 1″) roller chains of the so-called American series (A-series), standardized to ISO 606 (DIN 8188, ANSI B29.1). They are available in simplex and duplex designs.
24A-1 / ASA 120-1 (Simplex)
24A-2 / ASA 120-2 (Duplex)
Typical Applications
The 24A / ASA 120 sprockets with a hub are intended for general use in heavy industry.
Typical applications include power-transmission drives; they are also used in lifting equipment and material-handling systems.
Materials
C43 steel.
Other materials on request.
Sprocket Code Description
Example:
24A-1-14-N (ASA 120, 1 1/2” × 1”) - 14 Teeth, with Hub (Steel)
| Code Part | Description |
|---|---|
| 24A |
Chain type |
| 1 |
Simplex design |
| 14 |
Number of teeth |
| N |
Design with hub |
| ASA 120 |
Chain designation according to ANSI B29.1 standard (USA) |
| 1 1/2” × 1” |
Chain pitch × inner width |
| 14 Teeth, with Hub (Steel) |
Sprocket design and material |

