| 摘要 |
Achieved is a cage for a radial roller bearing (1) that is made by axial draw molding, and that can suppress wear due to friction between the end sections in the axial direction and the guide surfaces of the opposing members, without the assembly direction being restricted, even when guide surfaces of opposing members are not able to support the cage over the entire area of the end surfaces in the axial direction. The cage 7c is composed of a pair of circular ring shaped rim sections 8e, 8f and a plurality of column sections 9, with the spaces between column section 9 that are adjacent in the circumferential direction functioning as pockets 10. Outer-diameter side concave sections 23a, 23b are provided at a plurality of locations on the outer circumferential surfaces of the rim sections 8e, 8f in portions that are aligned in the axial direction with the pockets 10, and inner-diameter side concave sections 24a, 24b are provided at a plurality of locations having a different phase in the circumferential direction than the outer-diameter concave sections 23a, 23b on the inner circumferential surfaces of the rim sections 8e, 8f in portions that are aligned in the axial direction with the pockets 10. Moreover, on one rim section 8e and the other rim section 8f, the phases in the circumferential direction of the outer-diameter side concave sections 23a, 23b and the inner-diameter side concave sections 24a, 24b are different. |
