| 摘要 |
PROBLEM TO BE SOLVED: To provide a rolling bearing that achieves a longer service lifetime without causing an increase in costs or the like. SOLUTION: The rolling bearing has raceway rings 2, 3 made of steel including≥0.45 mass% and≤0.60 mass% of C and the raceway rings 2, 3 respectively having a hardening layer 7 on the surface layer part of each rolling-element raceway groove 4, 5. The hardening layer 7 is formed by induction hardening so as to achieve≤0.35 of a ratio between a thickness d of the hardening layer and a wall thickness D of each raceway ring in a depth direction of each rolling-element raceway groove while achieving≥100 MPa of a compressive residual stress in a depth direction of the hardening layer at a depth in which a dynamic maximum shear stress when a dynamic load rating is applied becomes maximum. COPYRIGHT: (C)2009,JPO&INPIT
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