Patent ID: 7753814

Claim:
A belt type continuously variable transmission, comprising: a pulley shaft that is supported by a first bearing and a second bearing that are spaced apart from each other in an axial direction of the pulley shaft on opposite sides of a sheave that is supported by the pulley shaft; a supply oil passage that supplies hydraulic fluid to a pulley hydraulic chamber and includes a radial direction oil passage that extends in the pulley shaft in a radial direction of the pulley shaft; a movable sheave that is attached to the pulley shaft and that faces the sheave that is supported by the pulley shaft; and a cylinder member that is attached to the pulley shaft and faces the movable sheave, wherein the radial direction oil passage is formed in the pulley shaft outside of a portion of the pulley shaft that is between a center of the first bearing and a center of the second bearing with respect to the axial direction of the pulley shaft, an outer peripheral surface of an inner cylindrical portion of the movable sheave contacts and slides on an inner peripheral surface of a first cylindrical portion of the cylinder member, the portion of the pulley shaft that is between the center of the first bearing and the center of the second bearing with respect to the axial direction of the pulley shaft is free of any oil passages that extend in the radial direction of the pulley shaft such that any radial direction oil passage that extends in the radial direction from the pulley shaft is not provided between the center of the first bearing with respect to the axial direction of the pulley shaft and the center of the second bearing with respect to the axial direction of the pulley shaft.