| Constraint location | Constraint state | |||||
|---|---|---|---|---|---|---|
| U1 | U2 | U3 | UR1 | UR2 | UR3 | |
| The bottom cross section of inner ring | – | √ | √ | – | – | – |
| The left cross section of inner and outer rings | √ | – | – | – | √ | √ |
| The left cross section of roller | √ | – | – | – | √ | √ |
| longitudinal center line of left cross section | – | – | √ | – | – | – |