The joint bearing is a spherical plain bearing when it is working. The sliding contact surface is an inner spherical surface and an outer spherical surface. It can be rotated and oscillated at any angle during the movement. The joint bearing adopts surface phosphating, blasting and inserting. , spraying and other special processing methods. The joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, and good lubrication.
The structure of the joint bearing is simpler than that of the rolling bearing. In operation, it mainly consists of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. Joint bearings are generally used for low-speed oscillating motion (ie angular motion). Since the sliding surface is spherical, it can also be tilted in a certain range of angles (ie, aligning motion), and the support shaft is not concentric with the shaft hole. When the degree is large, it still works normally.
Joint bearings can withstand large loads. Depending on their type and construction, it is possible to withstand radial loads, axial loads or combined loads of radial and axial forces. Since the outer surface of the inner ring is provided with a composite material, the bearing can be self-lubricated during operation. Generally used for low-speed oscillating motion, and low-speed rotation, it can also be tilted within a certain angle range. When the support shaft and the shaft housing hole are different, the normal operation can still be performed. Self-lubricating joint bearings are used in water conservancy and professional machinery industries.