| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| W 618/4 R | 4 | 9 | 2.5 |
| W 638/4 R-2RS1 | 4 | 9 | 4 |
| W 638/4-2RZ | 4 | 9 | 4 |
| W 604 | 4 | 12 | 4 |
| W 634-2RS1 | 4 | 16 | 5 |
| W 619/4-2Z | 4 | 11 | 4 |
| W 634 | 4 | 16 | 5 |
| W 624-2RS1 | 4 | 13 | 5 |
| W 604-2RZ | 4 | 12 | 4 |
| W 624 | 4 | 13 | 5 |
| W 634 R-2RS1 | 4 | 16 | 5 |
| W 627/4-2ZS | 4 | 7 | 2.5 |
| W 617/4 XR | 4 | 8 | 2 |
| W 637/4 X | 4 | 10 | 3 |
| W 624 R-2RS1 | 4 | 13 | 5 |
| 604-Z | 4 | 12 | 4 |
| 634-RZ | 4 | 16 | 5 |
| W 619/4-2RZ | 4 | 11 | 4 |
| 634-RS1 | 4 | 16 | 5 |
| W 627/4-2Z | 4 | 7 | 2.5 |
| W 638/4 X-2RZ | 4 | 10 | 4 |
| 619/4 | 4 | 11 | 4 |
| W 618/4 | 4 | 9 | 2.5 |
| W 638/4 XR-2Z | 4 | 10 | 4 |
| W 627/4 R-2Z | 4 | 7 | 2.5 |
| 634-2RZ | 4 | 16 | 5 |
| W 624 R-2Z | 4 | 13 | 5 |
| W 604-2Z | 4 | 12 | 4 |
| 638/4-2Z | 4 | 9 | 4 |
| W 638/4 X-2RS1 | 4 | 10 | 4 |
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