| 摘要 |
PROBLEM TO BE SOLVED: To provide a cage for a rolling bearing, a rolling bearing, and a manufacturing method of the cage for the rolling bearing, capable of further improving durability of the cage having the specific surface shape on a surface without degrading productivity.SOLUTION: A cage 23 for a rolling bearing is a cage made of a synthetic resin and disposed between an inner ring and an outer ring of the rolling bearing, and a plurality of guided portions 25A, 25B are disposed along the circumferential direction while projecting to a radial outer side from an outer diameter face. The guided portions 25A, 25B include guide faces 27 slidably kept into contact with the outer ring, chamfer portions 31 formed on an edge portion of the guide faces 27, and groove portions 33A, 33B formed on a part of the guide faces 27 along an axial direction. The guide faces 27 and the chamfer portions 31 have surface characteristics of arithmetic average roughness Ra of 1.0-9.8 μm, and a maximum height Rt of 10.1-102.9 μm. A parting line PL is disposed at a radially inner side with respect to the guide faces 27.SELECTED DRAWING: Figure 3 |
