Patent ID: 6490935
Filing Date: 2002-12-10
Classification: F16C,G01L,G01M

Abstract:
An antifriction bearing for accommodating rotation about an axis while transmitting a load that is directed at an angle with respect to the axis, said bearing comprising: an inner race having a tapered raceway presented outwardly away from the axis; an outer race having a tapered raceway presented inwardly toward the raceway of the inner race; tapered rollers located between the races and contacting the raceways, whereby the rollers will roll along the raceways when relative rotation occurs between the races; one of the races having a first groove located directly behind the raceway of that race and generally aligned with the load, said one race also having a second groove located directly behind the raceway of that race and located between 30Â° and 70Â° from the first groove, the grooves extending axially in said one race and forming unsupported beams in said one race; and a first strain sensor attached to said one race in the first groove and a second strain sensor attached to said one race in the second groove, the sensors being capable of detecting strains in the beams of said one race and being oriented to detect strains in the circumferential direction.