Patent ID: 6176805
Filing Date: 2001-01-23
Classification: F16C,F16H

Abstract:
An angular bearing of a dual cavity toroidal type continuously variable transmission, comprising:a torque input shaft having a shaft-side raceway groove formed in an outer peripheral surface of a flange portion provided in an end thereof;a cam disc of a loading cam unit having a disc-side raceway groove formed in an inner peripheral surface of a jointing opening thereof, said cam disc located around the end of said torque input shaft; anda plurality of balls held between said shaft-side raceway groove and said disc-side raceway groove to bear thrust loads exerted on said cam disc,wherein each of an angular contact angle between said balls and said shaft-side raceway groove and an angular contact angle between said balls and said disc-side raceway groove is 60.degree. or smaller, andeach of a curvature radius of a groove surface of said shaft-side raceway groove and that of a groove surface of said disc-side raceway groove is from 52% to 55% of a diameter of said ball.