| 轴承代号 | 外形尺寸 | |||
| 开放型 | 密封式2RS | 防尘盖型ZZ | d | D |
| 681 | - | - | 1 | 3 | MR31 | - | - | 1 | 3 |
| 691 | - | 691ZZ | 1 | 4 | MR41X | MR41X 2RS | MR41XZZ | 1.2 | 4 |
| 681X | 681X 2RS | 681XZZ | 1.5 | 4 | 691X | 691X 2RS | 691XZZ | 1.5 | 5 |
| 601X | 601X 2RS | 601XZZ | 1.5 | 6 | 682 | 682 2RS | 682ZZ | 2 | 5 |
| MR52 | MR52 2RS | MR52ZZ | 2 | 5 | 692 | 692 2RS | 692ZZ | 2 | 6 |
| MR62 | MR62 2RS | MR62ZZ | 2 | 6 | MR72 | MR72 2RS | MR72ZZ | 2 | 7 |