| Bore diameter | d | 20 | mm |
| Pitch circle diameter (gearing) | D0 | 73.10 | mm |
| Upper tolerance | 0.02 | mm |
| Tip diameter (gearing) | Dk | 78.60 | mm |
| Thickness of sprocket | C1 | 7 | mm |
| Locking collar width | B1 | 31 | mm |
| Outside diameter eccentric locking collar | d3 | 33 | mm |
| Width, outer ring | C | 14 | mm |
| Outside diameter | d2 | 47 | mm |
| Width of flats | W | 3 | mm |
| Outside diameter locking collar/locknut | d3 | 33 | mm |
| Locking collar total width | B1 | 31 | mm |
| Chamfer width | C2 | 1.10 | mm |
| Width accros flats | W | M6 X 0,75 | |
| ISO chain | x |
| ANSI chain | x | ||
| Number of teeth | z | 18 |
