Rolling bearing composition

Details Rolling bearing composition Rolling bearing composition

1991-05-29

1992-04-28

Lechert, Jr., Stephen J.

Specialized metallurgical processes, compositions for use therei

Compositions

Consolidated metal powder compositions

75243, 419 67, 419 68, C22C 2902

Patent

active

051084910

ABSTRACT:
A rolling bearing comprise a bearing ring having inner and outer rings, and rolling elements. At least one of the inner and outer rings and the rolling elements is formed of a sintered alloy steel and has pores and carbides present therein. The largest one of the pores has a diameter equal to or smaller than 3 .mu.m in terms of a diameter assued if the largest pore were converted to a spherical shape. The largest one of the carbides has a diameter equal to or smaller than 12 .mu.m in terms of a diameter assumed if the largest carbide were converted to a spherical shape. The at least one of the inner and outer rings and the rolling elements has hardness higher than 64 and lower than 69 in terms of HRC.

REFERENCES:
patent: 3802852 (1974-04-01), Niimi et al.
patent: 4388114 (1983-06-01), Suganuma et al.
patent: 4420543 (1983-12-01), Kondo et al.
patent: 4601592 (1986-07-01), Jatczak
patent: 4702767 (1987-10-01), Takata et al.

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