| 尺寸(毫米) Dimensions(mm) |
||||
| 轴承型号 Bearing No |
内径 d |
外径 D |
宽度 B |
装配倒角 rmin |
| 629-2RS | 9 | 26 | 8.0 | 0.30 | 639 | 9 | 30 | 10.0 | 0.60 |
| 639-2Z | 9 | 30 | 10.0 | 0.60 | 639-2RS | 9 | 30 | 10.0 | 0.60 |
| RO9 | 0.0400 | 0.1250 | 0.0469 | 0.0039 | RO9-2Z | 0.0400 | 0.1250 | 0.0469 | 0.0039 |
| RO9-2RSp | 0.0400 | 0.1250 | 0.0469 | 0.0039 | RO8* | 0.0469 | 0.1562 | 0.0625 | 0.0039 |
| RO8-2Z | 0.0469 | 0.1562 | 0.0625 | 0.0039 | RO8-2Rs | 0.0469 | 0.1562 | 0.0625 | 0.0039 |
| RI* | 0.0550 | 0.1875 | 0.0781 | 0.0039 | RI-2Z | 0.0550 | 0.1875 | 0.0781 | 0.0039 |