| Bore diameter | d | 16.20 | mm |
| Thickness of sprocket | C1 | 7 | mm |
| Tip diameter (gearing) | Dk | 78.60 | mm |
| Upper tolerance | 0.10 | mm | |
| Pitch circle diameter (gearing) | D0 | 73.10 | mm |
| Number of teeth | z | 18 |
| ISO chain | x |
| Chamfer width | C2 | 1.10 | mm |
| Width, outer ring | C | 12 | mm |
| Outside diameter | d2 | 40 | mm |
| Width Inner ring | B | 18.30 | mm |
