| Distance from locking device side face to raceway centre | s1 | 30.20 | mm |
| Bore diameter | d | 40 | mm |
| Overall width | A | 38.50 | mm |
| Depth of centring recess | A3 | 3.20 | mm |
| Overall bearing width | B | 49.20 | mm |
| Top external diameter | Db1 | 98 | mm |
| Centering diameter | Dc | 115.90 | mm |
| Overall length | L | 130 | mm |
| Overall unit width | T | 54.20 | mm |
| outer diameter inner ring | da | ≈51.8 | |
| Flange width | A | 14 | mm |
| Standout of end cover | A5 | 26 | mm |
| Distance from locking device side face to thread centre | B4 | 8 | mm |
| Base external diameter | Db2 | 106 | mm |
| Distance between attachment bolts | J | 101.50 | mm |
| Diameter of attachment bolt hole | N | 14 | mm |
| Manufacturer | Part Number |
|---|---|
| FAG | UCF208-J7 (FAG) |
| INA | RCJY40-N (INA) |
