| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| W 6004-2RS1 | 20 | 42 | 12 |
| 6204-2ZNR | 20 | 47 | 14 |
| W 6304-2RZ | 20 | 52 | 15 |
| 6004 | 20 | 42 | 12 |
| W 61804-2Z | 20 | 32 | 7 |
| W 61904-2RZ | 20 | 37 | 9 |
| 61804 | 20 | 32 | 7 |
| 6304-ZNR | 20 | 52 | 15 |
| 6304-Z | 20 | 52 | 15 |
| 6304-RSL | 20 | 52 | 15 |
| 16004 | 20 | 42 | 8 |
| 6304-RSH | 20 | 52 | 15 |
| W 61904 | 20 | 37 | 9 |
| 6004-Z | 20 | 42 | 12 |
| W 6004-2RZ | 20 | 42 | 12 |
| 6304 NR | 20 | 52 | 15 |
| D/W SRI-1634-2ZS | 19.05 | 25.4 | 3.967 |
| RMS 6 | 19.05 | 50.8 | 17.462 |
| D/W R12-2RZ | 19.05 | 41.275 | 11.113 |
| RLS 6 | 19.05 | 47.625 | 14.288 |
| RLS 6-2RS1 | 19.05 | 47.625 | 14.288 |
| RLS 6-2Z | 19.05 | 47.625 | 14.288 |
| D/W ER1634 | 19.05 | 25.4 | 3.967 |
| D/W R12-2Z | 19.05 | 41.275 | 11.113 |
| D/W ER1634-2ZS | 19.05 | 25.4 | 3.967 |
| D/W R12 | 19.05 | 41.275 | 7.938 |
| D/W R12-2RS1 | 19.05 | 41.275 | 11.113 |
| WBB1-8713 | 18 | 24 | 4 |
| W 63803-2Z | 17 | 26 | 7 |
| W 61703 R-2ZS | 17 | 23 | 4 |
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