Pre-tightening force to ensure the life of transmission. If the pre-tightening force is too large, power consumption may even lead to overheating. If the preload is too small, the body load, shaft rolling, and the gap between the outer ring will produce beating, running, and transmission accuracy to reduce noise increase, affecting gear meshing, and severe damage to teeth and bearings.

According to different spherical roller bearing assembly, such as: the bearing pre-tightening nut which directly compresses the inner ring of the inner bearing axially rotates the inner and outer rings to eliminate the gap and realize the purpose of bearing pre-tightening force. Realize common use: the front is far beyond the pre-installed bearing, the rear of the nut, and then back 1/4 turn. Assembly method. The advantages of this method are low investment, simplicity, practicality, and consistent quality of tapered roller bearings.

　　 1. Electric heating plate heating method Put the bearing on the electric heating plate at a temperature of 100℃ for a few minutes. This method is simple and convenient, such as turning over several times.