| Bearing NO. | Basic Dimension (mm) | |||
| d | D | Roller pitch circle diameter Dpw | B | |
| RU28 | 10 | 52 | 28 | 8 | RU42 | 20 | 70 | 41.5 | 12 |
| RU52 | 25 | 80 | 52.5 | 12 | RU66 | 35 | 95 | 66 | 15 |
| RU85 | 55 | 120 | 85 | 15 | RU124(G)/RU124X | 80 | 165 | 124 | 22 |
| RU148(G)/RU148X | 90 | 210 | 147.5 | 25 | RU178(G)/RU178X | 115 | 240 | 178 | 28 |
| RU228(G)/RU228X | 160 | 295 | 227.5 | 35 | RU297(G)/RU297X | 210 | 380 | 297.3 | 40 |
| RU445(G)/RU445X | 350 | 540 | 445.4 | 45 |