Joint bearing is a special structure of sliding bearings. Its structure is simple than rolling bearing, which is dominated by a spherical inner ring and an outer ring of the inner sphere, can withstand a greater load, according to their different types and structures that can withstand the radial load, shaft to load or radial, axial joint load. Bearings are generally used for slower swing motion (angular motion), the sliding surface for the spherical shape, but also within a range of angles of tilt movement (ie, self-aligning movement), in the heart of the support shaft and the axis of the shell hole large degree, still work.
Spherical plain bearings incur ability to withstand the direction of the load. Nominal contact angle according to the form and structure can be divided into radial spherical plain bearing, angular contact bearings thrust bearings and rod ends. Radial spherical plain bearings (GE type) nominal contact angle is 0 degrees, suitable for radial load and smaller axial load. angular contact bearings (GAC-type) was divided into angular contact, angular contact spherical plain bearings and angular contact thrust joint bearing two to Spherical Plain Bearings nominal contact angle greater than 0 but less than or equal to 30 degrees, to adapt to the combined load of radial and axial load simultaneously; angular contact thrust bearing joints nominal contact angle greater than 30 degrees less than 90 degrees, suitable for axial load, can be combined loads, but the radial load should not be greater than 0.5 times the axial load thrust bearings (GX) nominal contact angle of 90 degrees, suitable for axial load, unable to bear radial load. Rod end bearings suitable for radial loads smaller axial load (generally less than or equal to 0.2 times the radial load).
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