| Bore diameter | d | 12,70 | mm |
| Overall width | A | 26 | mm |
| Depth of centring recess | A3 | 3,20 | mm |
| Distance from locking device side face to thread centre | B4 | 4 | mm |
| Base external diameter | Db2 | 53 | mm |
| Distance between attachment bolts | J | 54 | mm |
| Diameter of attachment bolt hole | N | 11,50 | mm |
| Overall unit width | T | 32,90 | mm |
| outer diameter inner ring | da | ≈24.2 | |
| Flange width | A | 11 | mm |
| Overall bearing width | B | 27,40 | mm |
| Top external diameter | Db1 | 50 | mm |
| Centering diameter | Dc | 55,60 | mm |
| Overall length | L | 76 | mm |
| Distance from locking device side face to raceway centre | s1 | 15,90 | mm |
