发明名称 Rolling bearing
摘要 A rolling bearing such as a rolling bearing for an alternator of an automobile, the life period of which is prevented from being shortened due to the temporal reduction of a radial internal clearance even in a high temperature environment. The rolling bearing includes a plurality of rolling elements rotatably arranged between an inner race and an outer race, and at least the inner race and the outer race are made of a steel material. An austenite residual rate of the inner race is smaller than an austenite residual rate of the outer race. The amount of dimensional expansion of the outer race due to the martensite transformation of residual austenite is larger than that of the inner race, so that the occurrence of clearance loss is suppressed even when dimensional expansion of the rolling elements occurs.
申请公布号 US6726728(B2) 申请公布日期 2004.04.27
申请号 US20020049151 申请日期 2002.02.27
申请人 KOYO SEIKO CO., LTD. 发明人 OKUMURA TSUYOSHI;MIYAZAKI HIROYUKI;NAKAGAWA YOSHITAKA;TAZUMI HAJIME
分类号 F16C19/16;F16C33/62;F16C33/64;(IPC1-7):F16C33/32 主分类号 F16C19/16
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