Spherical Plain Bearing

Joint bearings are a type of spherical sliding bearings, with sliding contact surfaces consisting of an inner spherical surface and an outer spherical surface. They can rotate and swing at any angle during movement. They are made using various special processing methods such as surface phosphating, blasting, pad insertion, and spraying. Joint bearings have the characteristics of high load capacity, impact resistance, corrosion resistance, wear resistance, self aligning, and good lubrication.

The structure of joint bearings is simpler than that of rolling bearings, mainly consisting 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 swing motion (i.e. angular motion). Due to the spherical sliding surface, they can also perform tilting motion (i.e. centering motion) within a certain angle range. They can still work normally when the support shaft and the shaft shell hole are not concentric.

Joint bearings can withstand large loads. According to its different types and structures, it can withstand radial loads, axial loads, or combined loads that exist both radially and axially. Due to the composite material embedded on the outer spherical surface of the inner ring, this bearing can generate self-lubrication during operation. It is generally used for low speed swing motion and low-speed rotation, and can also perform tilting motion within a certain angle range. When the support shaft and shaft shell hole are not concentric, they can still work normally.

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