| 摘要 |
PROBLEM TO BE SOLVED: To provide an angular contact ball bearing capable of improving strength of a cage and satisfying a function of the cage at the time of high-speed rotation.SOLUTION: An inner peripheral surface of an outer ring 3 has an outer ring small diameter shoulder part 3b formed at an axial one side of an outer ring raceway surface 3a and a large diameter counterbore 3c that is formed at the axial other side of the outer ring raceway surface 3a and is larger in diameter than the outer ring small diameter shoulder part 3b. A solid cage 11 comprises a one-side annular part 15a and the other-side annular part 15b each of which is arranged at one axial side and the other axial side; a plurality of columns 17 axially connecting the one-side annular part 15a and the other-side annular part 15b; and a plurality of pockets 9 defined by the one-side annular part 15a, the other-side annular part 15b and the plurality of columns 17 so as to rotatably hold a plurality of balls 7. The outer peripheral surface of the solid cage 11 is formed as a stepped shape having different outer diameters &phgr;DO2, &phgr;DO1 of the one-side annular part and the other-side annular part 15b and a relation between an inner diameter &phgr;A2 of the outer ring small diameter shoulder part 3b and the outer diameter &phgr;DO1 of the other-side annular part 15b is set as &phgr;A2<&phgr;DO1. |
