First, we should clearly understand what is FAG rolling bearing clearance, what is the main cause of the gap, the two problems do not know can not continue to look down, below we briefly introduce. Load preload depends on appropriate normal operating temperature in FAG rolling bearings. Angular contact ball bearing or tapered roller bearings can bear radial and axial load. In radial load, will have an effect on the bearing axial force, the general should bear by second bearings.
Two single row angular contact ball bearings or two tapered roller bearings back to back or face bearing configuration surface composition, each FAG rolling bearing must axial force from another bearing. Two bearing phase at the same time, the central role of radial load to the bearing of two, if the FAG rolling bearing configuration is adjusted to zero clearance, half the rolling element load can automatically achieve load distribution. We should remember the rigidity is affected not only by the elastic bearing, but also affected by the installed with the shaft and the bearing seat elasticity, FAG rolling bearing ring and the stress field of all other components include bearing elastic deformation. Have a considerable impact of these factors on the shaft system with elastic.