| 摘要 |
PROBLEM TO BE SOLVED: To improve the durability in the purpose of applying a shock load or a high load, in a rolling bearing. SOLUTION: In a rolling bearing A having balls 3 made of steel, the circumferential direction compression recidual stresses in the plurality of positions in the depth direction from the surface side of the ball 3 are specified separately. As a result, since an adequate hardness and an adequate toughness are given from the surface to a necessary depth position of the ball 3, the generation and the development of a surface damage and a rolling fatigue crack of the ball 3 is made possible to suppress.
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