| 摘要 |
A washer (5) to be mounted to an end surface (14) of an inner ring includes an extension portion (52) extending along an outer peripheral surface (15) of the inner ring. The extension portion (52) includes an engaging projection portion (53) to be engaged with an engaging recessed portion (16) formed in the outer peripheral surface (15) of the inner ring. The engaging projection portion (53) includes a rounded curved surface portion (55), and a flat surface portion (54) formed continuously with a forward side in a pressing direction of the rounded curved surface portion (55) and inclined radially outward. |
