Patent ID: 8210952
Filing Date: 2012-07-03
Classification: F16D,Y10S

Abstract:
1. A universal joint, comprising: an outer race in which tracks extending axially are formed at equiangular positions of an inner periphery thereof; a spider having a plurality of trunnion journals protruding radially from equiangular positions thereof; and a plurality of roller assemblies, each of which is rotatably carried by one of the trunnion journals, wherein: each of the roller assemblies comprises a spherical roller having a spherical outer peripheral surface and a plurality of needle rollers arrayed between the one of the trunnion journals and the spherical roller; each of the trunnion journals has an outer periphery in which a raceway for the needle rollers and flanges for regulating axial movement of the needle rollers are formed; and each of the trunnion journals has integrally formed from an outer periphery of a tip end thereof at least one protrusion that extends beyond an inner circumference of the spherical roller.