Rolling bearing

Details Rolling bearing Rolling bearing

1997-07-31

1999-12-07

Yee, Deborah

Metal treatment

Stock

Carburized or nitrided

148332, 148319, 148906, 384492, 384912, C22C 3816, F16C 3362, C23C 822, C23C 832

Patent

active

059976616

ABSTRACT:
A rotating shaft 4 is attached to an inner race 1, and an outer race 2 is fixed to a housing 5 so that the bearing is operated by the rotation of the rotating shaft 4. In this case, the inner race 1 is made to be the race on the rotating side, and the outer race 2 is made to be the race on the non-rotating side. The raw material composing the inner race 1, outer race 2 and rollers 3 is manufactured from alloy steel containing 4.5 weight % or less of Ni, and 0.5 weight % or less of Cu, and the average value of the Cu equivalent of the rollers 3 and the inner race 1 is set at a value higher than the Cu equivalent of the outer race 2. Thus, even in humid environments where water infiltrates into the lubricant, it is possible to make the rolling bearing have the same durable life as with rolling bearings which are used in normal environments. Accordingly, it is possible to provide rolling bearings endowed with superior durable life from the electrochemical viewpoint even when water infiltrates into the bearing lubricant.

REFERENCES:
patent: 2639985 (1953-08-01), Shauweeker
patent: 4930909 (1990-06-01), Murakami et al.
patent: 5013525 (1991-05-01), Hamada et al.
patent: 5137375 (1992-08-01), Murakami et al.
patent: 5292200 (1994-03-01), Matsumoto et al.
patent: 5338377 (1994-08-01), Mitamura et al.

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