(1) Reason: low precision bearings. Methods: The levels of precision bearing provisions.
(2) Cause: The spindle is bent or cabinet Holes. Methods: Repair spindle or box.
(3) The reason: the belt tight. : Adjust the belt to make proper tightness.
(4) The reason: poor lubrication. Methods: The model provides a lubricating material and properly cleaned.
(5) The reason: low quality of assembly. Methods: To improve the quality of assembly.
(6) Reason: bearing housings laps. : Replace worn bearings and related components.
(7) the axial force is too large. Methods: cleaning, alignment ring seal gap between the requirements 0.2-0.3MM.
(8) bearing damage. : Replace the bearings.