The annual demand for bearings from the country can reach 400 billion. The huge demand market and the rapid development of various fields complement each other. There is no doubt about the role of bearings, how to professional procurement of suitable bearings, has become an important issue that many procurement personnel need to think about.

1. Selection of Model: The rolling bearing model is generally selected by technical personnel according to the conditions of use and load of supporting products.

2. The Choice of Clearance: customers generally only tell what type and grade of rolling bearings when they buy them, and rarely ask for the clearance of bearings. However, the choice of clearance is also very important, among which the bearing speed, temperature, matching tolerance are directly related to the choice of bearing clearance. Generally, motors at speeds below 3500 RPM mostly use CM clearance, such as high temperature and high speed motors require relatively large clearance. Bearing clearance will be reduced after assembly due to the expansion of the inner hole and the reduction of the outer circle, the reduction of clearance = interference ×60% (except the bearing chamber is aluminum).

3. Selection of Grease: The selection of grease is generally selected according to the bearing's speed, temperature resistance, noise requirements and starting torque.

4. Selection of Bearing Seal Type: lubrication of rolling bearings can be divided into oil lubrication and grease lubrication. Oil-lubricated bearings are generally open bearings, and grease lubricated bearings are generally sealed with dust caps or rubber seals. Dust cover is suitable for high temperature or good use environment parts, seals are divided into contact seal and non-contact seal two kinds, contact seal dust performance is good but the starting torque is large, non-contact seal starting torque is small, but the sealing performance is not as good as contact.

Contact:19957426729(WhatsApp)     bugao@bgbearing.com(Email)