Selection of bearing type, the principal should consider five factors:
1) aligning performance: when two coaxiality of the housing bore cannot be guaranteed or is a large shaft deflection, should be given to selected or self-aligning ball bearings spherical roller bearing.
2) rigidity requirements: typically stiffness than ball bearings roller bearings, angular contact ball bearings, tapered roller bearings with preload method, you can further increase the stiffness of support.
3) supporting limit requirements: fixed support limit the axial displacement of the two, you can choose can be subjected to bi-directional axial load of bearing, item limit selected can withstand a single axial load bearing, floating support is not limited, the choice of inner and outer rings of cylindrical roller bearings can be detached.
4) load direction, size and medium: radial spherical plain bearings subjected to radial loads, thrust bearing is mainly affected by load individually.
5) speed: speed should normally be less than the speed limit of the bearing n, deep groove ball bearings, angular contact ball bearings roller bearings the speed limit and the original high, suitable for high-speed operation and low thrust bearings the speed limit.



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