发明授权
- 专利标题: Rolling bearing
- 专利标题(中): 滚动轴承
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申请号: US9688申请日: 1998-01-20
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公开(公告)号: US06051082A公开(公告)日: 2000-04-18
- 发明人: Shigeru Okita , Manabu Ohori , Satoshi Kadokawa , Akihiro Kiuchi , Akira Iida
- 申请人: Shigeru Okita , Manabu Ohori , Satoshi Kadokawa , Akihiro Kiuchi , Akira Iida
- 申请人地址: JPX Tokyo
- 专利权人: NSK Ltd.
- 当前专利权人: NSK Ltd.
- 当前专利权人地址: JPX Tokyo
- 优先权: JPX9-019629 19970120; JPX9-363739 19971217
- 主分类号: C21D6/00
- IPC分类号: C21D6/00 ; C21D9/36 ; C21D9/40 ; C22C38/00 ; C22C38/18 ; F16C33/32 ; F16C33/34 ; C22C38/02
摘要:
A rolling bearing includes a rolling element made of a steel containing 0.9 to 1.1 wt. % C, 0.1 to 0.5 wt. % Si, 0.2 to 0.8 wt. % Mn, 1.0 to 1.8 wt. % Cr, with the balance being Fe and inevitable impurities. In the rolling bearing at least the surface of the rolling element includes carbides having an area fraction of 5% to 15%; of these carbides, carbides having an averaged particle diameter of 0.5 .mu.m or more share 50% or more of the area fraction of all the carbides; and of the carbides, carbides having an averaged particle diameter of 1 .mu.m or more share 2% or less of the area fraction of all the carbides; and wherein the rolling element has at least a Vickers surface hardness HV of 750 to 900.
公开/授权文献
- USD359311S Display sign 公开/授权日:1995-06-13