| 摘要 |
PROBLEM TO BE SOLVED: To provide a hub unit bearing that enables a hub bolt to be fixedly fitted in a hub bolt hole in a secure manner without deforming a hub flange.SOLUTION: An inner peripheral surface of a hub bolt hole 11a is provided with recessed parts 20 to be formed into a non-circular shape. An outer peripheral surface of a hub bolt 12a is provided with protruding parts 21 to be formed into a non-circular shape. A gap exists between the recessed part 20 and the protruding part 21 facing the recessed part 20. A bush 22 formed by a soft material is embedded in the gaps. The protruding parts 21 contact with the recessed parts 20 through the bush 22 to prevent deformation of the hub bolt hole 11a and rotation of the hub bolt 12a.SELECTED DRAWING: Figure 1 |
