How to choose rolling bearings？

This article will share bearing procurement secrets from bearing properties and professional knowledge.

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

2. Selection of clearance: When customers buy rolling bearings, they generally only tell what type and grade they are in, and rarely put forward requirements for the clearance of bearings. However, the choice of clearance is also very important, among which the bearing speed, temperature, and fit tolerance are directly related to the choice of bearing clearance. Generally, motors with a speed below 3500 rpm mostly use CM clearance, such as high-temperature high-speed motors, which require relatively large clearance. After assembly, the bearing clearance will be reduced due to the expansion of the inner hole and the reduction of the outer circle. The reduction of the clearance = the amount of interference × 60% (except the bearing chamber is aluminum).

3. Selection of grease: The selection of grease is generally based on the bearing speed, temperature resistance, noise requirements and starting torque.

4. Selection of bearing seal type: The 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. The dust cover is suitable for high temperature or good use environment. The seals are divided into two types: contact seal and non-contact seal. The contact seal has good dustproof performance but large starting torque, and the non-contact seal has a small starting torque, but the sealing performance No contact is good.

Kent Bearings is an enterprise focusing on the research and manufacture of high-precision, low-noise ball bearings, and has rich experience in bearing production and sales. At present, our products are widely used in motors, automobiles, household appliances, power tools and other fields. We have our own R&D center dedicated to researching new technologies in bearing production and testing, so as to further improve the quality of bearings. Adhering to the business philosophy of "the real quality lasts longer and the bearing rotates more quietly", we have been well received by many customers. Welcome to consult if you need. (Part of the data in this article comes from the Internet and is only for learning and communication purposes. If you have any questions, please contact us to delete it in time.)