3/4" (12B) British Standard pitch sprockets. Manufactured in Steel EN8, 080M40/080M46, C45
12B-1 57T Steel Sprocket (6SR57)
12B-1 57T Steel Sprocket (6SR57)
| Part No. | 7825-403 |
| Code | 6SR57 |
| No. teeth | 57 |
| Outside dia. de | 355.4 |
| Pitch dia. dp | 345.81 |
| Boss dia. | 118 |
| Bore D1* | 25 |
| Overall Width A | 61 |
Every effort is taken to ensure the accuracy of the table data
Design variations and errors although rare may occur