发明名称 |
ROLLING BEARING CAGE AND ROLLING BEARING |
摘要 |
It is an object of the present invention to provide a cage for a rolling bearing having a film, formed on a surface thereof, which wears little over a long period of time from an initial stage of sliding contact between the film and rolling elements as well as other members and does not peel off the surface of a base material of the cage or dissolve in lubricating oil containing a sulfur-based additive and a rolling bearing having the cage. A cage (2) retains needle rollers (3) which are rolling elements of a needle rolling bearing (1). Of an entire outer surface of the cage (2), a tin alloy film consisting of tin and a metal other than the tin is formed on at least a sliding-contact surface of the cage (2) to be subjected to sliding contact with the needle rollers (3) and a sliding-contact surface thereof to be subjected to sliding contact with other members. The metal other than the tin has a lower surface free energy than iron. In the tin alloy film, as a weight ratio (wt%) between the tin and the metal other than the tin, (tin : metal other than tin) = (65:35) to (95:5). |
申请公布号 |
EP2918860(A4) |
申请公布日期 |
2016.04.20 |
申请号 |
EP20130853506 |
申请日期 |
2013.11.07 |
申请人 |
NTN CORPORATION |
发明人 |
SATO, YOJI;TADA, MASAMI;MIKAMI, HIDENOBU |
分类号 |
F16C33/46;C23C2/08;C23C18/48;C23C26/00;C25D3/60;C25D7/10;C25D17/16;C25D21/12;F16C9/02;F16C9/04;F16C19/26;F16C19/46;F16C33/56 |
主分类号 |
F16C33/46 |
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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