It is a type of spherical plain bearing with a simpler structure than rolling bearings. It is mainly composed of an inner ring with an outer spherical surface and an outer ring with an inner spherical surface. During movement, it can rotate and swing at any angle. Generally, it is used for low - speed oscillating motion (angular motion) and can also perform tilting motion (self - aligning motion) within a certain angular range. It can still work normally when the misalignment between the supporting shaft and the housing bore is relatively large. It can withstand relatively large loads. Depending on different types and structures, it can bear radial loads, axial loads, or combined loads with both radial and axial loads simultaneously.
It is made through various special process treatment methods such as surface phosphating, notch processing, pad inlaying, and spraying. It features impact resistance, corrosion resistance, wear resistance, and self - aligning capabilities. Some have composite materials inlaid on the outer spherical surface of the inner ring, so they can generate self - lubrication during operation. They also have the characteristics of good lubrication or self - lubrication without contamination from lubricating dirt, and can work normally even if there is installation misalignment.
It has high load - bearing capacity, impact resistance, and excellent corrosion and wear resistance. High - precision manufacturing processes and materials ensure stable performance even under long - term and high - frequency use. High - quality spherical plain bearings have excellent wear resistance and a long service life, which can reduce equipment maintenance costs and downtime.
It is widely used in engineering hydraulic cylinders, forging machine tools, and construction machinery. It plays an important role in the slewing mechanism of cranes, the boom, stick, and bucket of excavators.
It is used in automobile shock absorbers.
Self - lubricating spherical plain bearings can be applied to water conservancy machinery.
It is used in precision testing equipment, optical inspection equipment, communication equipment, and consumer electronics testing equipment for 3C product R & D and production, ensuring the accuracy of test results, imaging quality, measurement accuracy, stable signal transmission, and the stability of product quality and performance.
