| Bearing type | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| 220-2Z | 100 | 180 | 34 |
| 220-Z | 100 | 180 | 34 |
| 305 NR | 25 | 62 | 17 |
| 305-2Z | 25 | 62 | 17 |
| 305-2ZNR | 25 | 62 | 17 |
| 305-Z | 25 | 62 | 17 |
| 305-ZNR | 25 | 62 | 17 |
| 306 NR | 30 | 72 | 19 |
| 306-2Z | 30 | 72 | 19 |
| 306-2ZNR | 30 | 72 | 19 |
| 306474 D | 760 | 1080 | 150 |
| 306493 AA | 850 | 1220 | 165 |
| 306704 C | 710 | 1000 | 140 |
| 306708 D | 650 | 920 | 118 |
| 306-Z | 30 | 72 | 19 |
| 306-ZNR | 30 | 72 | 19 |
| 307 NR | 35 | 80 | 21 |
| 307-2Z | 35 | 80 | 21 |
| 307-2ZNR | 35 | 80 | 21 |
| 307-Z | 35 | 80 | 21 |
| 307-ZNR | 35 | 80 | 21 |
| 308 NR | 40 | 90 | 23 |
| 308-2Z | 40 | 90 | 23 |
| 308-2ZNR | 40 | 90 | 23 |
| 308-Z | 40 | 90 | 23 |
| 308-ZNR | 40 | 90 | 23 |
| 309 NR | 45 | 100 | 25 |
| 309-2Z | 45 | 100 | 25 |
| 309-2ZNR | 45 | 100 | 25 |
| 309-Z | 45 | 100 | 25 |
