Patent ID: 6550333
Filing Date: 2003-04-22
Classification: F16H,G01N

Abstract:
A toroidal continuously variable transmission comprising: an input disk disposed on an input shaft; an output disk disposed on an output shaft; and a power roller bearing which includes an inner ring, an outer ring and a plurality of rolling members, in which said inner ring is rollingly contacted in said input disk and output disk and which transmits a power of said input shaft to said output shaft,wherein a maximum shear stress depth obtained on a condition on which said input disk is rollingly contacted in the inner ring of the power roller bearing in a maximum deceleration state of the toroidal continuously variable transmission and the power is transmitted is defined as a symbol Zo, a size of a defect obtained in accordance with a shape of the defect detected by a nondestructive inspection method is defined as a square root length, and then at least one of said input disk and said inner ring of the power roller bearing does not include a defect of 0.10 mm or more in terms of said square root length in a range of a depth from a traction surface which is twice the depth Zo.