Nsk bearing a long life and can not meet the requirements of the general installation and adjustment of the focus should be to take the following measures:
(1) nsk bearing their interference fit the size of the surface of the grouping, each in turn bearing sequence arranged according to the size of the clearance. The corresponding diameter of the shaft or housing bore the same group. Interference with the surface of the large size bearings and large diameter shaft or housing bore group corresponding matching the size of a small diameter corresponding group matching. Each corresponding group match, the clearance of nsk bearings take a tight fit, nsk bearing clearance to take a more loose fit. Result of such matching, making the machine installed in the same batch, nsk bearing interference with the more consistent, both, however loose nor too tight, clearance is more uniform, thus ensuring the nsk bearing after installation of the prestressing appropriate and avoid creeping rings Splitting, impact, vibration or heat generated due to improper clearance, cohesion and other non-normal bearing failure occurred.
(2) supporting both ends of the journal and the housing bore concentricity and perpendicularity of the bearing end face must be strictly guaranteed to prevent the generation of additional load. If possible, load bearing outside the role of mechanical components should be slightly away from easily damaged end nsk bearing axis and rotation system as smooth operation.
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