TRIPOD-TYPE CONSTANT VELOCITY UNIVERSAL JOINT

摘要

A tripod-type constant velocity universal joint having an outside coupling member (10) where three track grooves (12) extending in the axial direction are formed in the inner periphery and where a pair of opposite side walls of each track groove (12) functions as roller guiding surfaces (14), a tripod member (20) where radially projecting three leg shafts (24) are formed on the outer periphery, and roller assemblies (30) rotatably supported by the leg shafts (24) of the tripod member (20), wherein the roller assemblies (30) are arranged so as to roll along the roller guiding surfaces (14) of the outside coupling member (10). A single row deep groove ball bearing is used as a roller assembly (30), the single row deep groove ball bearing is a bearing where the inner diameter of an inner ring (32) and the outer diameter of an outer ring (34) have cylindrical surfaces and both side surfaces of the inner and outer rings are formed in flat.