Patent ID: 6196946
Filing Date: 2001-03-06
Classification: B21K,F16H,Y10S,Y10T

Abstract:
A power roller bearing in a toroidal type continuously variable transmission for transmitting power due to rotation of an input disk to an output disk, the power roller bearing being provided swingably between the input disk and the output disk, the power roller bearing comprising:an inner race; andan outer race;wherein the inner race is formed in an annular shape that includes a traction surface put in contact with both the input disk and the output disk, an end face opposed to the outer race, and an annular raceway groove of the inner race provided at the end face, and a metal flow extending along at least one of the traction surface and a surface of the raceway groove of the inner race, andwherein an angle between the metal flow of the inner race and a tangent line to at least one of the traction surfaces and the surface of the raceway groove of the inner race is 30.degree. or less, andthe outer race is formed in an annular shape and includes an end face opposed to the inner race and an annular raceway groove of the outer race provided at the end face, and a metal flow extending along a surface of the raceway groove of the outer race,wherein an angle between the metal flow of the outer race and a tangent line to the surface of the raceway groove of the outer race is 30.degree. or less.