Patent ID: 7354347

Claim:
A constant velocity universal joint comprising: an outer joint member having three track grooves formed in an inner periphery thereof, each of said track grooves having axial roller guideways on both sides thereof; a tripod member having three radially-projecting trunnions; rollers respectively arranged on said trunnions of said tripod member, said rollers being guided by said roller guideways; and roller assemblies for allowing tilting movements of said rollers with respect to said trunnions, wherein said roller assemblies include said rollers and support rings for supporting said rollers rotatably, said support rings being fitted onto outer peripheries of said trunnions, wherein inner peripheries of said support rings have an arcuate convex section, wherein the outer peripheries of said trunnions are straight in a longitudinal section, and so shaped in a cross section as to make contact with the inner peripheries of said support rings in directions perpendicular to an axis of the joint and create clearances with the inner peripheries of said support rings in an axial direction of the joint, wherein at least one of an induced thrust and a slide resistance of the constant velocity universal joint is within a predetermined amount.