Material: Steel C45, not hardened. Pre-bored. Sprockets with 45 teeth and more are made from grey cast iron GG25. General dimensions: B1 = 11,1 mm, c = 2,0 mm, r3 = 19 mm. Other dimensions: See the table.
| No. of Teeth | 21 |
|---|---|
| da (mm) | 136,0 |
| d (mm) | 127,82 |
| ND (mm) | 90 |
| B (mm) | 20 |
| L (mm) | 40 |
| Weight (kg) | 2,35 |
