Rolling bearing device using spacers with adjusted lengths

摘要

The device has inner and outer spacers (22, 23) resting on inner and outer rings (14-17) of upper and lower rolling bearings (13, 12) respectively. Lengths of the inner and outer spacers are adjusted to limit variations in rigid preload caused by temperature gradients between two points of the bearing to less than 30 percent. Effect of differential axial expansion of the spacers on the preload in a direction of an increased preload offsets the effect of differential radial expansion of the rings on the preload along lines of a decreased preload.