When selecting the INA bearing type, the following five factors should be considered:
1) Direction, size and nature of the load: The radial bearing is mainly subjected to radial load, and the thrust bearing is mainly subjected to axial load. Angular contact ball bearings and tapered roller bearings are available for INA bearings when subjected to both radial and axial loads. Deep groove ball bearings can also be used when the axial load is small. Generally, the roller INA bearing has higher bearing capacity than the ball INA bearing and has a strong ability to withstand impact loads.
2) Rotating speed: The working speed of INA bearing should normally be lower than the limit speed n. The limit rotation speed of deep groove ball bearing, angular contact ball bearing and cylindrical roller bearing is higher, suitable for high speed operation, and the limit rotation speed of thrust bearing is higher. low.
3) Self-aligning performance: When the coaxiality of the two INA bearing housing holes is not guaranteed or the deflection of the shaft is large, the self-aligning ball bearing or spherical roller bearing should be considered.
4) Stiffness requirements: Generally, the rigidity of the roller INA bearing is larger than that of the ball INA bearing, and the angular contact ball bearing and the tapered roller bearing adopt the pre-tightening method to further improve the rigidity of the bearing.
5) Support limit requirements: The fixed support limits the axial displacement in two directions. INA bearings can be used to withstand the biaxial axial load. The one-way limit can be used with INA bearings that can bear the one-way axial load. Unlimited, cylindrical roller bearings with inner and outer rings can be separated.
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