In the bearing installation, the engineers are most concerned about how to operate correctly. If the operation is improper, it may cause damage to the bearing. If it is operated at high speed and the working temperature is high, special attention should be paid to the fitting of the rotating ferrule not to be too loose to prevent eccentric vibration, and the fit of the fixed ferrule should not have gaps to prevent the ferrule from deforming under load. Excite vibration.

The assembly accuracy of the cage is guaranteed by the special assembly mold, which can fully guarantee the assembly accuracy requirements of the bearing.

The condition for adopting a small interference fit for the fixed ring is that both sides of the mating surface have high shape accuracy and small roughness, otherwise, it will make installation difficult and disassembly even more difficult.

Spindles using paired double angular contact ball bearings are mostly loaded with light loads. If the fit interference is too large, the internal axial preload will be significantly larger, which will cause adverse effects. The main shaft of the double row short cylindrical roller bearing and the main shaft of the tapered roller bearing have a relatively large load, so the interference is relatively large.

The burning interference of the rotating ferrule should also be small within the possible range. As long as the influence of thermal expansion at the working temperature and the influence of centrifugal force at the maximum speed are ensured, the creeping or sliding of the tight-fitting surface will not be caused. According to the size of the working load and the size of the bearing, the fixed ring selects a very small clearance fit or interference fit. Too loose or too tight is not conducive to maintaining the original precise shape.

It is necessary to accurately calculate the interference fit of the rotating ferrule and the proper fit of the fixed ferrule.

The roundness of the shaft and the seat hole and the verticality of the shoulder should be required according to the corresponding accuracy of the bearing.