发明授权

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