| Shaft diameter | d | 25 | mm |
| Top width | A1 | 22 | mm |
| Overall height | H | 70 | mm |
| Step height | A1 | 16 | mm |
| Distance between attachment bolts | J | 102 | mm |
| Width of attachment bolt hole | N | 11.50 | mm |
| Base width | b | 36 | mm |
| Width Inner ring | B | 34.10 | mm |
| Spherical seat centre height | H1 | 36.50 | mm |
| Overall width | A | 130 | mm |
| Length of attachment bolt hole | N1 | 19.50 | mm |
