Joint bearing is a kind of spherical sliding bearing. Its sliding contact surface is an inner spherical surface and an outer spherical surface. It can rotate and swing at any angle when moving. It is fabricated by a variety of special processing methods, such as surface phosphating, exploding, padding, spraying and so on. Joint bearing has the characteristics of large load capacity, impact resistance, corrosion resistance, wear resistance, self-aligning, good lubrication and so on.
Joint bearings can withstand heavy loads. According to its different types and structures, it can withstand radial load, axial load or combined radial and axial load. Since the composite material is embedded on the outer spherical surface of the inner ring, the bearing can produce self lubrication in operation. Generally used for low-speed swing motion, and low-speed rotation, but also in a certain angle range of inclined motion, when the bearing shaft and shaft shell hole is not more centrality, it can still work properly. Self lubricating joint bearings are used in water conservancy, professional machinery and other industries.