Rolling bearing

Details Rolling bearing Rolling bearing

1994-05-13

1995-05-09

Yee, Deborah

Metal treatment

Stock

Carburized or nitrided

148906, 148333, 384912, C22C 3818, C21D 936

Patent

active

054136431

ABSTRACT:
A rolling bearing is disclosed, which comprises an inner ring, an outer ring, and rolling elements each composed of an alloy steel which are, after being subjected to a carburizing treatment or a carbonitriding treatment, subjected to quench-hardening and tempering or is subjected to quench-hardening or tempering, wherein the alloy steel contains from 0.10 to 1.00% by weight C, from 0.50 to 3.00% by weight Cr, from 0.15 to 1.00% by weight Si, from 0.2 to 1.50% by weight Mn, and rest being Fe and unavoidably intermixed impurities, the average amount of the retained austenite of at least the inner ring in the inner ring and the outer ring is not more than 4% by volume and the average amount of the retained austenite of the rolling elements is from 20 to 30% by volume.

REFERENCES:
patent: 4904094 (1990-02-01), Furumura et al.
patent: 4992111 (1991-02-01), Yamada et al.
patent: 5085733 (1992-02-01), Mitamura
patent: 5338377 (1994-08-01), Mitamura

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