| 摘要 |
PROBLEM TO BE SOLVED: To provide a structurally-simple combination angular ball bearing capable of achieving the long life of the bearing by reducing the occurrence of damage to a rolling element and a cage, even when a preload of the angular ball bearing on an anti-load side is released, while suppressing an increase in manufacturing cost.SOLUTION: A guide type of the cage 34 of the first angular ball bearing 30 on a load side is a rolling element guide type. A flange part 44a protruding inward in a radial direction is provided on an inner peripheral part, on the side of the first angular ball bearing 30, of the cage 44 of the second angular ball bearing 40 on the anti-load side. An inclined plane 44b is formed on the axially-inward side of the flange part 44a, and an inclined plane 42b approximately parallel to the inclined plane 44b of the flange part 44a is formed on an outer peripheral part, on the side of the first angular ball bearing 30, of an inner ring 42 of the second angular ball bearing 40 in such a manner as to face the inclined plane 44b of the flange part 44a. The inclined plane 44b of the flange part 44a of the cage of the second angular ball bearing 40 and the inclined plane 42b of the inner ring 42 are brought into surface contact with each other so that a guide type of the cage 44 of the second angular ball bearing 40 can become an inner ring guide type via the surface contact. |
