Joint bearing has lubricating type and self-lubricating type. Joint bearing is a kind of sliding bearing with special structure. Its structure is simpler than rolling bearings. It is mainly composed of an outer ring with an inner spherical surface, which can bear larger loads. According to an inner ring with an outer spherical surface and its different types and structures, it can bear radial loads. , Axial load or a combined load that exists simultaneously in the radial and axial directions. Generally used for low-speed oscillating motion (that is, angular motion, or tilt motion (that is, centering motion) within a certain angle range, because the sliding surface is spherical motion), the support shaft and the shaft shell hole are not concentric When it is larger, it can still work normally.
Joint bearings are widely used in engineering hydraulic cylinders, forging machine tools, engineering machinery, automation equipment, automotive shock absorbers, water conservancy machinery and other industries. Because the spherical sliding contact area of the spherical plain bearing is large, the inclination angle is large, and also because most of the spherical plain bearing adopts special processing methods, such as surface phosphating, galvanizing, chrome plating or outer sliding surface lining, inserting, spraying, etc.
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