| Bore diameter | d | 12 | mm |
| Anchura | B | 8 | mm |
| Shoulder diameter of inner ring (small side face) | d2 | 17,10 | mm |
| Chamfer dimension (large side face) | r1,2 | min.0.3 | |
| Distance from side face to pressure point | a | 6,70 | mm |
| Diámetro exterior | d2 | 28 | mm |
| Shoulder diameter of inner ring (large side face) | d1 | 17,10 | mm |
| Shoulder diameter of outer ring (large side face) | D1 | 22,90 | mm |
| Chamfer dimension (small side face) | r3,4 | min.0.2 |
