Patent ID: 9624977
Date: 2017-04-18
CPC Classifications: F16C

Claim:
1. A cylindrical roller bearing comprising an outer race formed with a cylindrical raceway on an inner periphery of the outer race, an inner race formed with a cylindrical raceway on an outer periphery of the inner race, a plurality of cylindrical rollers disposed between the inner race and the outer race, and a cylindrical retainer formed with circumferentially spaced apart pockets which are equal in number to the cylindrical rollers and in which the respective cylindrical rollers are rotatably received, wherein a first one of the outer race and the inner race is a flanged bearing race having a first flange configured to guide first end surfaces of the respective cylindrical rollers, and a second flange configured to guide second end surfaces of the respective cylindrical rollers, and a second one of the outer race and the inner race is a flangeless bearing race having no flanges, wherein the retainer includes pillars defined between the respective adjacent pairs of the pockets, the retainer being configured such that the pillars are located between a pitch circle of the cylindrical rollers and the raceway of the flangeless bearing race and such that the pillars do not exist on the pitch circle of the cylindrical rollers, wherein at least one of the first flange and the second flange comprises a flange ring which is a separate member from, and fixed to, the flanged bearing race, and the flange ring is configured to be fixed to the flanged bearing race after fitting the cylindrical rollers in the flanged bearing race, and wherein the flange ring is fixed to the flanged bearing race by a fixing arrangement comprising a small-diameter cylindrical surface provided at an axial end of the flanged bearing race and formed with a radial threaded hole, a cylindrical portion provided on the flange ring and fitted on the small-diameter cylindrical surface, said cylindrical portion being formed with a radial bolt inserting hole, and a bolt, and wherein said fixing arrangement is configured such that the bolt can be inserted through the bolt inserting hole, driven into the threaded hole and tightened, thereby fixing the flange ring to the flanged bearing race.