A LOW TORQUE HYBRID BEARING

摘要

According to the present invention, a low torque composite bearing comprises: an outer wheel where an outer wheel roller orbit surface and an outer wheel ball orbit surface are formed on an inner surface; an inner wheel where an inner wheel roller orbit surface and an inner wheel ball orbit surface are formed on an outer surface; a roller line composed of a plurality of rollers provided between the outer wheel roller orbit surface and the inner wheel roller orbit surface; a ball line composed of a plurality of balls provided between the outer wheel ball orbit surface and the inner wheel ball orbit surface; and a retainer provided between the outer wheel and the inner wheel to maintain circumferential intervals of the rollers and the balls. According to the low torque composite bearing, the ball line is provided to a big end part of the roller line and spaced from the roller line in an axial direction to form an interval between the ball and the roller in the axial direction.