| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| NKI 32/20 | 32 | 47 | 20 |
| NKI 32/30 | 32 | 47 | 30 |
| NKIS 30 | 30 | 52 | 22 |
| NA 4906.2RS | 30 | 47 | 18 |
| NKI 30/20 TN | 30 | 45 | 20 |
| NAO 30x47x16 | 30 | 47 | 16 |
| NAO 30x47x18 | 30 | 47 | 18 |
| NA 4906 RS | 30 | 47 | 18 |
| NAO 30x45x26 | 30 | 45 | 26 |
| NAO 30x45x17 | 30 | 45 | 17 |
| NKI 30/30 TN | 30 | 45 | 30 |
| NA 6906 | 30 | 47 | 30 |
| NA 4906 | 30 | 47 | 17 |
| NA 49/28 | 28 | 45 | 17 |
| NA 69/28 | 28 | 45 | 30 |
| NKI 28/20 TN | 28 | 42 | 20 |
| NKI 28/30 | 28 | 42 | 30 |
| NKIS 25 | 25 | 47 | 22 |
| NAO 25x40x17 | 25 | 40 | 17 |
| NA 4905.2RS | 25 | 42 | 18 |
| NA 4905 RS | 25 | 42 | 18 |
| NA 6905 | 25 | 42 | 30 |
| NAO 25x42x16 | 25 | 42 | 16 |
| NKI 25/30 | 25 | 38 | 30 |
| NA 4905 | 25 | 42 | 17 |
| NKI 25/20 TN | 25 | 38 | 20 |
| NAO 25x42x32 | 25 | 42 | 32 |
| NA 49/22 | 22 | 39 | 17 |
| NA 69/22 | 22 | 39 | 30 |
| NKI 22/16 | 22 | 34 | 16 |
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