公开(公告)号：US20040247216A1

公开(公告)日：2004-12-09

申请号：US10859120

申请日：2004-06-03

Applicant: NTN CORPORATION

Inventor： Kenichi Ichikawa ,  Yasuyuki Watanabe

IPC: F16C013/00 ,  F16C023/04 ,  F16C023/08

CPC classification number: F01L1/181 ,  C21D1/78 ,  C21D9/0068 ,  C21D9/30 ,  C21D9/40 ,  C23C8/26 ,  C23C8/32 ,  F01L1/146 ,  F01L2101/00 ,  F01L2103/00 ,  F01L2105/00 ,  F01L2105/02 ,  F16C13/006 ,  F16C19/46 ,  F16C33/62 ,  F16C33/64 ,  F16C2240/90 ,  F16C2360/18 ,  F16H53/06 ,  Y10T74/2107

Abstract: 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.

Abstract translation: 一种滚动轴承，其具有如表面起始分离或内部起始分离等表面损伤的长寿命，并允许其轴端面的铆接，具有滚动轴承的滚子的凸轮从动件和凸轮。 滚动轴承包括外辊，位于外辊内的辊轴和插入在外辊和辊轴之间的滚动元件。 外辊和辊轴的至少一个构件具有富氮层。 滚动体滚动的滚动接触面的面积的表面部分具有11号或更大的奥氏体晶粒度。 端部的硬度不大于HV300。