| Bearing Number | Boundary dimensions | |||
| d (mm) | d (in) | D (mm) | D (in) | |
| 2300 | 10 | 0.394 | 35 | 1.379 | 2301 | 12 | 0.473 | 37 | 1.458 |
| 2302 | 15 | 0.591 | 42 | 1.655 | 2303 | 17 | 0.67 | 47 | 1.852 |
| 2304 | 20 | 0.788 | 52 | 2.049 | 2304K | 20 | 0.788 | 52 | 2.049 |
| 2305 | 25 | 0.985 | 62 | 2.443 | 2305K | 25 | 0.985 | 62 | 2.443 |
| 2306 | 30 | 1.182 | 72 | 2.837 | 2306K | 30 | 1.182 | 72 | 2.837 |
| 2307 | 35 | 1.379 | 80 | 3.152 | 2307K | 35 | 1.379 | 80 | 3.152 |