| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| 22311 EK | 55 | 120 | 43 |
| BS2-2212-2RSK/VT143 | 55 | 110 | 34 |
| BS2-2211-2RS/VT143 | 55 | 100 | 31 |
| 21312 EK | 55 | 130 | 31 |
| 22211 EK | 55 | 100 | 25 |
| 22311 EK | 50 | 120 | 43 |
| 21311 EK | 50 | 120 | 29 |
| 21311 EK | 50 | 120 | 29 |
| 22311 EK | 50 | 120 | 43 |
| BS2-2310-2RS/VT143 | 50 | 110 | 45 |
| 21310 EK | 50 | 110 | 27 |
| BS2-2210-2RS/VT143 | 50 | 90 | 28 |
| 22310 EK | 50 | 110 | 40 |
| 22210 EK | 50 | 90 | 23 |
| 22211 EK | 50 | 100 | 25 |
| 21310 E | 50 | 110 | 27 |
| BS2-2210-2RSK/VT143 | 50 | 90 | 28 |
| 22310 E/VA405 | 50 | 110 | 40 |
| 22210 E | 50 | 90 | 23 |
| 22211 EK | 50 | 100 | 25 |
| 22310 E | 50 | 110 | 40 |
| BS2-2211-2RSK/VT143 | 50 | 100 | 31 |
| BS2-2309-2RS/VT143 | 45 | 100 | 42 |
| 22310 EK | 45 | 110 | 40 |
| BS2-2209-2RS/VT143 | 45 | 85 | 28 |
| 22309 E/VA405 | 45 | 100 | 36 |
| BS2-2210-2RSK/VT143 | 45 | 90 | 28 |
| 22309 EK | 45 | 100 | 36 |
| 22210 EK | 45 | 90 | 23 |
| 22310 EK | 45 | 110 | 40 |
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