| 摘要 |
PROBLEM TO BE SOLVED: To provide a resin-made cage which is favorable in rigidity.SOLUTION: A column part 10 is connected to an internal peripheral face 5b of a large-diameter rim part 5, and an external peripheral face 7b of a small-diameter rim part 7. The internal peripheral face 5b of the large-diameter rim part 5 and the external peripheral face 7b of the small-diameter rim part 7 have axial inside parts 5c, 7c which are overlapped with the column part 10 in an axial direction, and axial outside parts 5d, 7d which are not overlapped with the column part 10 in the axial direction, respectively. A small-diameter annular member 2 is externally fit to the axial outside part 5d of the internal peripheral face 5b of the large-diameter rim part 5. A large-diameter annular member 4 is externally fit to the axial outside part 7d of the external peripheral face 7b of the small-diameter rim part 7. |
