发明名称 |
Rolling bearing, and method of ultrasonically detecting flaws in bearing raceway ring of rolling bearing |
摘要 |
<p>Asurface to serve as a surface under ultrasonic inspection has a roughness of 0.4 mu mRa or less, and wherein all imperfections existing a controlled volume X corresponding to all cross sections of a raceway ring 1 assume a length of 0.2 mm or less as represented by the square root of areas of the imperfections. Accordingly, it is possible to provide a rolling bearing which does not become short-lived and obviates a concern about occurrence of cracking even when used in a harsh environment. <IMAGE></p> |
申请公布号 |
EP1219844(A2) |
申请公布日期 |
2002.07.03 |
申请号 |
EP20010130713 |
申请日期 |
2001.12.21 |
申请人 |
NSK LTD |
发明人 |
KIUCHI, AKIHIRO;MATSUMOTO, YOICHI;MURAKAMI, YASUO |
分类号 |
G01N29/04;F16C33/58;F16C33/64;(IPC1-7):F16C33/58 |
主分类号 |
G01N29/04 |
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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