Regular maintenance (regular inspection) of the idler bearings can make the idler bearings fully play and maintain their proper performance for a long time. the 1. Inspection and judgment of roller bearings In order to judge whether the disassembled bearing can be used again, it is necessary to focus on checking its dimensional accuracy, rotation accuracy, internal clearance, mating surface, raceway surface, cage and sealing ring, etc. Regarding the inspection results, it can be judged by those who use inertial bearings or those who are proficient in bearings. Judgment criteria vary according to mechanical performance, importance, and inspection cycle. Bearings must not be reused and must be replaced if damaged as follows. 1) Fractures and defects of the bearing parts of the idler roller accessories. 2) The peeling of the rolling surface of the raceway surface. 2. Cleaning When dismantling the bearings of the idler roller accessories for inspection, first use photography and other methods to make appearance records. Also, confirm the amount of remaining lubricant and sample the lubricant before cleaning the bearing. a. Bearing cleaning is divided into rough cleaning and fine cleaning, and a metal grid rack can be placed at the bottom of the container used. b. During rough cleaning, use a brush in the oil to remove grease or stickies. At this time, if the bearing is rotated in oil, be careful that the rolling surface will be damaged by foreign objects. c. During fine cleaning, turn the bearing slowly in the oil and do it carefully. The cleaning agent usually used is neutral water-free diesel oil or kerosene, and sometimes warm lye is used as needed. No matter what kind of cleaning agent is used, it must be filtered frequently to keep it clean. Immediately after cleaning, apply anti-rust oil or anti-rust grease on the bearing.  

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