| Shaft diameter | d | 30 | mm |
| Top width | A1 | 25 | mm |
| Overall height | H | 82 | mm |
| Step height | A1 | 17 | mm |
| Distance between attachment bolts | J | 117.50 | mm |
| Width of attachment bolt hole | N | 14 | mm |
| Base width | b | 40 | mm |
| Width Inner ring | B | 38.10 | mm |
| Spherical seat centre height | H1 | 42.90 | mm |
| Overall width | A | 152 | mm |
| Length of attachment bolt hole | N1 | 23.50 | mm |
