The assembly quality indexes of rolling bearing are mainly radial clearance and width.There is a certain functional relation between axial clearance and radial clearance. The axial clearance can be controlled indirectly by controlling radial clearance.
For deep groove ball bearings, cylindrical roller bearings, centering ball bearings and centering roller bearings, radial clearance is mainly controlled.For thrust ball bearings, thrust roller bearings and tapered roller bearings, the main control height and width;For angular contact ball bearings, the contact Angle is mainly controlled.
The basic requirement of rolling bearing assembly is that, under the premise of ensuring the assembly quality index, the sleeve closing rate is the highest, generally more than 95%.