In order to ensure the long life of the bearing nsk, can not meet the general requirements for the installation and adjustment should focus on to take the following measures:
1. Nsk bearing at their interference fit surface size grouping, each group in turn bearing sequentially arranged according to their size of the clearance. The respective shaft or housing bore diameter for the same packet. Interference fit large surface dimensions of the bearing set is selected corresponding to the group with the large diameter shaft or housing bore group, while a small size with a small diameter corresponding group matching. In each corresponding group match, the clearance of nsk bearings take a tight fit, clearance nsk bearing take loose tie. The results of such optional, makes the machine installed in the same batch, nsk bearings with interference is more consistent, however loose nor too tight clearance is also more uniform, thus ensuring nsk bearings after installation of prestressed expedient, peristalsis and avoid, the ferrule Zhanglie, shock, vibration or heat generation due to improper clearance cohesion abnormal bearing failure occurred.
2. Support both ends of the journal and the housing bore concentricity and verticality of the end face of the support necessary to strictly guarantee prevent additional load generation. If possible, on the mechanical components of the load bearing outside should be slightly away from the more easily damaged end nsk bearing axis and rotary file system to the extent possible smooth operation.
 
 



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