High temperature rolling element bearing

Details High temperature rolling element bearing High temperature rolling element bearing

1997-03-14

1998-05-19

Hannon, Thomas R.

Bearings

Rotary bearing

Antifriction bearing

384573, 3849071, F16C 3344

Patent

active

057527733

ABSTRACT:
A novel rolling element bearing assembly comprises an inner race, an outer race, a plurality of rolling elements, and a carbon-carbon composite retainer. The carbon-carbon composite retainer is fabricated by providing a woven tube, cutting the woven tube into suitably sized rings, piercing the rings for rolling bearing elements, and densifying the resulting retainer. Alternatively, the tube can be densified, then cut into a plurality of retainer blanks which are then pierced. For use at operating temperatures above about 650.degree. C., ceramic coatings, such as silicon carbide (SiC), silicon nitride (Si.sub.3 N.sub.4) and boron nitride (BN) can be used to provide oxidation resistance for the carbon-carbon composite retainer at such elevated temperatures.

REFERENCES:
patent: 3472567 (1969-10-01), Johnson
patent: 3744862 (1973-07-01), Schwartz
patent: 4522883 (1985-06-01), Wallace et al.
patent: 4960643 (1990-10-01), Lemelson
patent: 5482385 (1996-01-01), Yokota et al.
patent: 5495979 (1996-03-01), Sastri et al.

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