The joint bearing is a spherical plain bearing. The sliding contact surface is an inner spherical surface and an outer spherical surface. It can be rotated and oscillated at any angle during movement. It is treated with various special processes such as surface phosphating, blasting, inserting and spraying. The method is made. The joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, and good lubrication.
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.