| Bearing model | Boundary Dimensions（mm） | ||
|---|---|---|---|
| d | D | B | |
| STO 35 | 35 | 72 | 20 |
| NA 2207.2RSX | 35 | 72 | 23 |
| STO 35 X | 35 | 72 | 20 |
| NA 2207.2RS | 35 | 72 | 23 |
| STO 30 | 30 | 62 | 20 |
| NA 2206.2RSX | 30 | 62 | 20 |
| NA 2206.2RS | 30 | 62 | 20 |
| STO 30 X | 30 | 62 | 20 |
| STO 25 X | 25 | 52 | 16 |
| STO 25 | 25 | 52 | 16 |
| NA 2205.2RS | 25 | 52 | 18 |
| NA 2205.2RSX | 25 | 52 | 18 |
| NA 2204.2RSX | 20 | 47 | 18 |
| STO 20 | 20 | 47 | 16 |
| NA 2204.2RS | 20 | 47 | 18 |
| STO 20 X | 20 | 47 | 16 |
| STO 17 X | 17 | 40 | 16 |
| STO 17 | 17 | 40 | 16 |
| NA 2203.2RS | 17 | 40 | 16 |
| NA 2203.2RSX | 17 | 40 | 16 |
| NA 2202.2RS | 15 | 35 | 14 |
| STO 15 | 15 | 35 | 12 |
| NA 2202.2RSX | 15 | 35 | 14 |
| STO 15 X | 15 | 35 | 12 |
| NA 2201.2RS | 12 | 32 | 14 |
| NA 2201.2RSX | 12 | 32 | 14 |
| STO 12 | 12 | 32 | 12 |
| STO 12 X | 12 | 32 | 12 |
| NA 2200.2RS | 10 | 30 | 14 |
| NA 2200.2RSX | 10 | 30 | 14 |
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