Rolling bearing, cam-follower with roller, and cam

Details Rolling bearing, cam-follower with roller, and cam Rolling bearing, cam-follower with roller, and cam

2004-06-03

2009-10-20

Joyce, William C (Department: 3656)

Machine element or mechanism

Elements

Cams

C384S492000, C384S569000

Reexamination Certificate

active

07603929

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.

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Japanese Office Action, with English translation, issued in Japanese Patent Application No. 2004-158046, mailed May 26, 2009.

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