| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| NKI 22/20 | 22 | 34 | 20 |
| NKIS 20 | 20 | 42 | 20 |
| NAO 20x35x17 | 20 | 35 | 17 |
| NKI 20/16 | 20 | 32 | 16 |
| NKI 20/20 | 20 | 32 | 20 |
| NA 6904 | 20 | 37 | 30 |
| NAO 20x37x16 | 20 | 37 | 16 |
| NA 4904.2RS | 20 | 37 | 18 |
| NA 4904 | 20 | 37 | 17 |
| NA 4904 RS | 20 | 37 | 18 |
| NA 4903 RS | 17 | 30 | 14 |
| NKIS 17 | 17 | 37 | 20 |
| NA 6903 | 17 | 30 | 23 |
| NKI 17/16 | 17 | 29 | 16 |
| NAO 17x30x13 | 17 | 30 | 13 |
| NA 4903 | 17 | 30 | 13 |
| NAO 17x35x16 | 17 | 35 | 16 |
| NA 4903.2RS | 17 | 30 | 14 |
| NKI 17/20 | 17 | 29 | 20 |
| NAO 15x32x12 | 15 | 32 | 12 |
| NA 4902.2RS | 15 | 28 | 14 |
| NAO 15x28x13 | 15 | 28 | 13 |
| NKI 15/20 | 15 | 27 | 20 |
| NKIS 15 | 15 | 35 | 20 |
| NA 4902 RS | 15 | 28 | 14 |
| NA 6902 | 15 | 28 | 23 |
| NKI 15/16 | 15 | 27 | 16 |
| NA 4902 | 15 | 28 | 13 |
| NAO 12x28x12 | 12 | 28 | 12 |
| NA 4901 RS | 12 | 24 | 14 |
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