Material: Steel C45, not hardened. Pre-bored. Sprockets with 45 teeth and above are made of grey cast iron GG25. General dimensions: B1 = 5,2 mm, B3 = 25,6 mm, c = 1,0 mm, r3 = 10 mm. Other dimensions: See the table.
| No. of Teeth | 21 |
|---|---|
| da (mm) | 67,6 |
| d (mm) | 63,91 |
| ND (mm) | 52 |
| B (mm) | 14 |
| L (mm) | 40 |
| Weight (kg) | 0,7 |
