1. Sliding bearing
Sliding bearings have no inner and outer rings and no rolling elements. They are generally made of wear-resistant materials. It is often used in low speed, heavy load and mechanical rotating parts where lubricating oil and maintenance are difficult.

2. Rolling bearings
Rolling bearings are divided into radial bearings and thrust bearings according to the load direction or nominal contact angle they can bear. The radial contact bearing is a radial bearing with a nominal contact angle of 0, and the radial angular contact bearing is a radial bearing with a nominal contact angle greater than 0 to 45. Axial contact bearings are thrust bearings with a nominal contact angle of 90°, and thrust angular contact bearings are thrust bearings with a nominal contact angle greater than 45 but less than 90°.

3. Ball bearings
Deep groove ball bearings are the most representative rolling bearings. Compared with other types of bearings of the same size, this type of bearing has small friction coefficient, high limit speed, simple structure, low manufacturing cost, high precision, no need for regular maintenance, large size range and many forms, making it the most widely used type. bearings. It mainly bears radial load and can also bear certain axial load. When it is only subjected to radial loads, the contact angle is zero.

4. Linear sliding bearings
Linear motion bearings are low-cost produced linear motion systems for use with cylindrical shafts with unlimited travel. Since the bearing ball is in point contact with the shaft, the operating load is small. The steel ball rotates with minimal frictional resistance, resulting in smooth motion with high precision.

5. Turntable bearings
The slewing bearing is a large bearing with a special structure that can simultaneously bear large axial load, radial load and overturning moment and other comprehensive loads, and integrates multiple functions such as support, rotation, transmission and fixation. Generally speaking, the slew plate bearing itself has mounting holes, lubricating oil and sealing devices, which can meet the different needs of various types of hosts working under different working conditions; on the other hand, the slew plate bearing itself has a compact structure and guides rotation. With the characteristics of convenience, easy installation and easy maintenance, it is widely used in large-scale rotating devices such as lifting and transportation machinery, excavators, construction machinery, port machinery, wind power generation, medical equipment, radar, etc.