| 摘要 |
PROBLEM TO BE SOLVED: To provide a crown type cage capable of reducing contact between the inner surface of a pocket and a ball, even if the opening side of the pocket moves to the outer side in the radial direction by a centrifugal force accompanied by the rotation of a ball bearing. SOLUTION: The pocket 7 is formed in the shape of an opening on the first end side in the axial direction by penetrating in the axial direction through an annular body 1a. The inner surface S of the pocket is formed in a spherical surface shape corresponding to a rolling body 5. A plurality of pockets 7 include a first pocket 7a having the inner surface S of a first radius r1 and a second pocket 7b of a second radius r2 larger than the first radius. COPYRIGHT: (C)2008,JPO&INPIT
|
