Title:
TAPERED ROLLER BEARING WITH DISPLACEABLE RIB
Document Type and Number:
WIPO Patent Application WO2008005788
Kind Code:
A9
Abstract:
A bearing system (A) that supports a shaft (4) in a housing (2) includes two single row tapered roller bearings (6, 8) mounted in opposition. One of the bearings (8) compensates for thermal variations that would otherwise produce excessive preload in the system. It has a conventional cup (48) in the housing and tapered rollers (52) arranged in a single row along the raceway (54) of the cup. It also has a compensating assembly (50, 100, 110, 120, 130) on the shaft, and it includes a ribless cone (60) having a raceway (70) around which the rollers are organized, an axially displaceable rib ring (64) for positioning the rollers, a spring (66) for urging the rib ring against a stop surface (74) on the cone, and a compensating ring (68) formed from a material having a high coefficient of thermal expansion for displacing the rib ring against the force exerted by the spring when the temperature of the compensating assembly exceeds a prescribed set point temperature so as to reduce preload in the bearing system.
Inventors:
FOX GERALD P (US)
BURNER BRUCE C (US)
BURNER BRUCE C (US)
Application Number:
PCT/US2007/072323
Publication Date:
April 03, 2008
Filing Date:
June 28, 2007
Export Citation:
Assignee:
TIMKEN CO (US)
FOX GERALD P (US)
BURNER BRUCE C (US)
FOX GERALD P (US)
BURNER BRUCE C (US)
International Classes:
F16C35/073; F16C19/36; F16C19/52; F16C25/08
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