Belt type continuously variable transmission, and method of manufacturing a sheave of the belt type continuously variable transmission

摘要

A belt type continuously variable transmission comprises a primary sheave (71), a secondary sheave (72), and a V-belt (73) wound round the primary sheave (71) and the secondary sheave (72), wherein at least a part of a contact portion of the V-belt (73), which is in contact with the primary sheave (71) and the secondary sheave (72), is formed from a resin, whereby one groove or several grooves formed on the contact surface of at least one of the primary sheave (71) and the secondary sheave (72) with the V-belt, to retain wear powder as a lubrication means.