Patent ID: 6715923
Filing Date: 2004-04-06
Classification: F16C

Abstract:
A bearing device comprising a shaft, a housing, a double row of bearings provided between the shaft and the housing and having first and second races, third and fourth races facing the first and second races, respectively, and balls between the first and third races and between the second and fourth races, the third and fourth races being integral with each other and first and second races being separated from each other with a gap therebetween for preload adjustment, the first race being fitted to one of the shaft and the housing, the second race being fixed to the one of the shaft and housing, the third and fourth races being fixed to the other of the shaft and the housing, the preload being applied to the bearings by pressing the first race toward the second race to make the gap narrower, and the bearing device further having a support member for supporting a side of the first race remote from the gap in the pre-loading direction, and the support member provided on a side of one of the shaft and the housing, the first race having a side surface and the second race having a side surface facing the side surface of the first race with the gap therebetween, such that part of the side surface of the first race remote from the balls is recessed or removed while part of the side surface of the second race remote from the balls is projected toward the part which is recessed or removed from the side surface of the first race.