1 1/4" (20B) British Standard pitch sprockets. Manufactured in Steel EN8, 080M40/080M46, C45
20B-1 21T Steel Sprocket (10SR21)
20B-1 21T Steel Sprocket (10SR21)
| Part No. | 7827-121 |
| Code | 10SR21 |
| No. teeth | 21 |
| Outside dia. de | 228.2 |
| Pitch dia. dp | 213.04 |
| Boss dia. | 140 |
| Bore D1* | 25 |
| Overall Width A | 55 |
Every effort is taken to ensure the accuracy of the table data
Design variations and errors although rare may occur