| 摘要 |
PROBLEM TO BE SOLVED: To improve the durability by adjusting a high frequency hardened layer of a component treated by high-frequency hardening in a bearing receiving thermal influence during its use. SOLUTION: In this bearing including a rolling shaft 1 as an inner ring and manufactured by performing high-frequency hardening treatment on the rolling shaft 1, a hardness of a surface of the high-frequency hardening layer 1a of the rolling shaft is HRC59-65, and the quantity of austenite remaining on the surface is 30% or less. COPYRIGHT: (C)2005,JPO&NCIPI
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