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Application of bearing pretightening force for machine tool spindles and small motors-
According to the preload of the bearing, the rigidity or rotational precision of the bearing configuration can be improved. For example, machine tool spindle bearings of CNC lathes, transmission gear bearings in transmission shafts, small motor bearings, or bearings for linear motion, etc. In some applications, if the bearing does not bear or only bears a small load and operates at high speed, preload should be carried out on the bearing configuration. In this case, the function of the preload is to give the bearing the least load to avoid the rolling of the overturning body and cause the bearing to be destroyed. The preload can be radial or axial according to different bearing types. For example, cylindrical roller bearings, because of their design, only increase the preload in the radial direction, while thrust ball bearings and cylindrical roller bearing thrust bearings only increase the preload in the axial direction. Angular contact ball bearings and tapered roller bearings generally bear axial preload and are usually matched with another bearing of the same type in a back-to-back or zero-distance manner. The deep groove ball bearings generally apply axial preload in the same way. In order to better achieve the purpose of preload, a radial internal clearance exceeding the general set should be adopted, so that it can be used as an angular contact ball bearing. Surface tension above zero. Only when the torque is accurate can the rotation be stable! (/jczzzc8293.html)
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