Material: Steel C45, not hardened. Pre-bored. Sprockets with 38 teeth and above are made of grey cast iron GG25. General dimensions: B1 = 15,8 mm, B2 = 47,7 mm c = 2,5 mm, r3 = 26 mm. Other dimensions: See the table.
| No. of Teeth | 21 |
|---|---|
| da (mm) | 181,2 |
| d (mm) | 170,43 |
| ND (mm) | 130 |
| B (mm) | 25 |
| L (mm) | 70 |
| Weight (kg) | 9,28 |
