Rolling contact element steel and rolling bearing made thereof

Details Rolling contact element steel and rolling bearing made thereof Rolling contact element steel and rolling bearing made thereof

1990-07-31

1992-01-28

Dean, R.

Metal treatment

Stock

Carburized or nitrided

148 165, 148 166, 148318, 384492, 384625, C23C 822, F16C 3300

Patent

active

050841165

ABSTRACT:
A rolling contact element steel has C: 0.2-0.6 wt %; Si: 0.5-2.0 wt %; Cr: 5.0-8.0 wt %; Mo: 3.0 wt % or less; Mn: 1.6 wt % or less; O: 12 ppm or less; and the balance of Fe and an inevitable impurity. A rolling bearing made of this steel will not soften even at high temperature. The dimensional stability at high temperature and wear-resistance of the steel are superior. The steel can produce a fine carbide without the need for a separate heat treatment. A rolling bearing has at least one of the races and the rolling element made of the steel, the steel being carburized or carbonitrided, then quenched and finally high-temperature tempered.

REFERENCES:
patent: 2837421 (1958-06-01), Kron
patent: 3117041 (1964-01-01), Kolstinen
patent: 3275389 (1966-09-01), Neilson et al.
patent: 3885995 (1975-05-01), Cunningham et al.
patent: 4023988 (1977-05-01), Stickels et al.
patent: 4191599 (1980-03-01), Stickels et al.
patent: 4930909 (1990-06-01), Murakami et al.

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