The steel ball and groove are worn out, the clearance is too large, and radial and axial sway is generated, which should be replaced in time. If the individual balls are worn out seriously, the steel balls with lighter wear and no pitting may be replaced on the old NSK bearings of the same type.
Lubricating oil should be provided. The self-aligning NSK bearing sealed at both ends does not need to be filled with lubricating oil during use. It should be removed after the end of the working season and lubricated from the small hole of the sealing cover.
When loading and unloading NSK bearings, do not hard knock hard, especially pay attention to not hit the outer casing of NSK bearing, you should gently tap the inner ring of NSK bearing.
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