The mounting support of the precision bearing must be rigid and the mounting surface must be flat.

Before assembling the precision bearing, the support should be dealt with to remove the stress, thereby reducing the deformation of the bearing support, and the contact surface of the support and the bearing must be cleaned up during assembly. And the bearing must be hoisted or stored horizontally, never vertical hoisting or a kind of storage to avoid deformation.

Before the bolts are completely tightened, the meshing of the gear should be checked, and the meshing condition should meet the requirements of gear accuracy. And in order to ensure the reliability of bolt work and avoid insufficient bolt pre-tightening force, the pre-tightening torque of the bolt should be checked separately after the first 100 hours and 500 hours of the precision bearing work.