| 摘要 |
PROBLEM TO BE SOLVED: To provide a thrust roller bearing constructed to restrict the axial movement of a radial roller bearing even when eliminating a bearing ring. SOLUTION: The thrust roller bearing 11 comprises a plurality of rollers 12, and a cage 13 which is a discoid member using a steel plate having a carbon content of less than 0.1% and an elongation of 36% or more as a starting material and having a hole 14 in the center, and which includes a roller holding part 16 having a plurality of pockets 17 storing the rollers 12 and extending to the radial direction and an inner periphery collar part 15 located on the inner periphery of the holding part 16. The inner periphery collar part 15 has a cylindrical portion 15a facing the hole 14 and linearly extending to the thickness direction, and first and second bent portions 15b, 15c bent from both axial ends of the cylindrical portion 15a to the radial outside with a predetermined curvature factor. COPYRIGHT: (C)2008,JPO&INPIT
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