Material: Steel C45, not hardened. Pre-bored. Sprockets with 45 teeth and above are made of grey cast iron GG25. General dimensions: B1 = 9 mm, B3 = 42,1 mm, c = 1,6 mm, r3 = 16 mm. Other dimensions: See the table.
| No. of Teeth | 21 |
|---|---|
| da (mm) | 113,4 |
| d (mm) | 106,52 |
| ND (mm) | 85 |
| B (mm) | 20 |
| L (mm) | 60 |
| Weight (kg) | 3,12 |
