发明名称 |
Rolling bearing, cam-follower with roller, and cam |
摘要 |
A rolling bearing that attains long life against surface damage such as surface-originating separation or internally originating separation and allows caulking of its shaft end face, a cam-follower with roller employing the rolling bearing, and a cam are obtained. The rolling bearing includes an outer-roller, a roller shaft located inside the outer-roller, and a rolling element interposed between the outer-roller and the roller shaft. At least one member of the outer-roller and the roller shaft has a nitrogen enriched layer. A surface portion of an area in a rolling contact surface where the rolling element rolls has austenite grain size of No. 11 or larger. The end portion has hardness of not larger than HV300.
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申请公布号 |
US7603929(B2) |
申请公布日期 |
2009.10.20 |
申请号 |
US20040859120 |
申请日期 |
2004.06.03 |
申请人 |
NTN CORPORATION |
发明人 |
ICHIKAWA KENICHI;WATANABE YASUYUKI |
分类号 |
C21D1/10;C21D1/78;C21D9/00;C21D9/30;C21D9/40;C23C8/26;C23C8/32;F01L1/14;F01L1/18;F16C13/00;F16C19/24;F16C19/46;F16C33/34;F16C33/62;F16C33/64;F16C35/06;F16H53/02;F16H53/06 |
主分类号 |
C21D1/10 |
代理机构 |
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代理人 |
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主权项 |
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地址 |
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