The metric spherical bearings is a spherical plain bearing. The basic type is composed of inner and outer rings with a spherical sliding spherical contact surface. The joint bearing mainly consists of an outer ring with an outer spherical surface and an outer ring with an inner spherical surface. Composition, can withstand large loads. Depending on its type and construction, it can withstand radial loads, axial loads or combined loads in both radial and axial directions.
Due to the composite material on the outer spherical surface of the inner ring, the metric spherical bearings can produce self-lubrication during the working process. It is generally used for low-speed oscillating motion, and can also be tilted within a certain angle range. When the support shaft and the shaft hole have different degrees of centering, they can still work normally. Self-lubricating joints are used in water conservancy and professional machinery industries.
The metric spherical bearings has a large spherical sliding contact area and a large inclination angle. At the same time, most of the joint bearings adopt special processing methods such as surface phosphating, galvanizing, chrome plating or outer sliding surface lining, inserting, spraying and the like. Therefore, it has large load capacity and impact resistance, and has the characteristics of corrosion resistance, wear resistance, self-aligning, good lubrication or self-lubricating and non-lubricating dirt pollution, even if the installation is misaligned, it can work normally. Therefore, joint bearings are widely used for low-speed oscillating motions, tilting motions, and rotational motions.