| Bearing type | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| 309-ZNR | 45 | 100 | 25 |
| 310 NR | 50 | 110 | 27 |
| 310-2Z | 50 | 110 | 27 |
| 310-2ZNR | 50 | 110 | 27 |
| 310-Z | 50 | 110 | 27 |
| 310-ZNR | 50 | 110 | 27 |
| 311 NR | 55 | 120 | 29 |
| 311-2Z | 55 | 120 | 29 |
| 311-2ZNR | 55 | 120 | 29 |
| 311-Z | 55 | 120 | 29 |
| 311-ZNR | 55 | 120 | 29 |
| 312 NR | 60 | 130 | 31 |
| 312-2Z | 60 | 130 | 31 |
| 312-2ZNR | 60 | 130 | 31 |
| 312-Z | 60 | 130 | 31 |
| 312-ZNR | 60 | 130 | 31 |
| 313 NR | 65 | 140 | 33 |
| 313-2Z | 65 | 140 | 33 |
| 313-2ZNR | 65 | 140 | 33 |
| 313-Z | 65 | 140 | 33 |
| 313-ZNR | 65 | 140 | 33 |
| 314 NR | 70 | 150 | 35 |
| 314-2Z | 70 | 150 | 35 |
| 314-2ZNR | 70 | 150 | 35 |
| 314-Z | 70 | 150 | 35 |
| 314-ZNR | 70 | 150 | 35 |
| 315-2Z | 75 | 160 | 37 |
| 315-Z | 75 | 160 | 37 |
| 316-2Z | 80 | 170 | 39 |
| 316-Z | 80 | 170 | 39 |
