Rolling bearing unit

Details Rolling bearing unit Rolling bearing unit

2006-02-21

2006-02-21

Hannon, Thomas R. (Department: 3682)

Bearings

Rotary bearing

Antifriction bearing

C384S492000, C384S625000

Reexamination Certificate

active

07001078

ABSTRACT:
A rolling bearing unit includes a shaft body, an inner ring mounted on the shaft body, an outer ring concentric with the inner ring, and a plurality of balls between the inner ring and the outer ring. A caulking portion to be caulked onto the outer end face of the inner ring is formed on the shaft body. A pre-load is applied to the balls to fix the inner ring to the shaft body. The retained austenite amount of an edge of the inner ring in the vicinity of the caulking portion is between 3% or more and 20% or less.

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patent: 6143425 (2000-11-01), Tanaka et al.
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