| Bearing type | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| D/W R3A | 4.762 | 15.875 | 4.978 |
| D/W R3A-2RS1 | 4.762 | 15.875 | 4.978 |
| D/W R3A-2RZ | 4.762 | 15.875 | 4.978 |
| D/W R3A-2Z | 4.762 | 15.875 | 4.978 |
| D/W R3W.1562 R | 4.762 | 12.7 | 3.967 |
| D/W R3W.1562-2Z | 4.762 | 12.7 | 3.967 |
| D/W R4 | 6.35 | 15.875 | 4.978 |
| D/W R4 R | 6.35 | 15.875 | 4.978 |
| D/W R4 R-2RS1 | 6.35 | 15.875 | 4.978 |
| D/W R4 R-2RZ | 6.35 | 15.875 | 4.978 |
| D/W R4 R-2Z | 6.35 | 15.875 | 4.978 |
| D/W R4-2RS1 | 6.35 | 15.875 | 4.978 |
| D/W R4-2RZ | 6.35 | 15.875 | 4.978 |
| D/W R4-2Z | 6.35 | 15.875 | 4.978 |
| D/W R4A | 6.35 | 19.05 | 5.558 |
| D/W R4A-2RS1 | 6.35 | 19.05 | 7.142 |
| D/W R4A-2RZ | 6.35 | 19.05 | 7.142 |
| D/W R4A-2Z | 6.35 | 19.05 | 7.142 |
| D/W R6 | 9.525 | 22.225 | 5.558 |
| D/W R6 R | 9.525 | 22.225 | 5.558 |
| D/W R6 R-2RS1 | 9.525 | 22.225 | 7.142 |
| D/W R6 R-2RZ | 9.525 | 22.225 | 7.142 |
| D/W R6 R-2Z | 9.525 | 22.225 | 7.142 |
| D/W R6-2RS1 | 9.525 | 22.225 | 7.142 |
| D/W R6-2RZ | 9.525 | 22.225 | 7.142 |
| D/W R6-2Z | 9.525 | 22.225 | 7.142 |
| D/W R6-5 | 12.7 | 22.225 | 5.558 |
| D/W R6-5-2ZS | 12.7 | 22.225 | 7.142 |
| D/W R8 | 12.7 | 28.575 | 6.35 |
| D/W R8 R | 12.7 | 28.575 | 6.35 |
