| 摘要 |
An inner ring (3) is fit to a stepped part (8) formed on the inner end of a hub (2b). A desired pre-load is applied to rolling elements (5) in a state that an outer end face (28) of the inner ring (3) is butted against a step surface (12) formed on the hub (2b). The inner ring (3) is fit to the hub (2b) by interference fitting causing a static friction force, which is larger than a thrust load acting on the inner ring (3) based on the pre-loading. Additionally, the inner end face of the inner ring (3) is clamped with a caulking portion, which is formed by expanding outward in the diameter directions a cylindrical portion (18) formed in the inner end of the hub (2b). <IMAGE> |
