Maintenance method of needle bearing with stamping outer ring

In order to give full play to the bearing and stick to its proper performance for a long time, the maintenance method of needle bearing with stamping outer ring must be done well in regular maintenance (regular inspection). It is very important for improving consumption rate and economy to find faults in early stage and avoid accidents after proper regular inspection. 1. When the bearing is removed for inspection, first record the appearance with photography and other methods. In addition, it is necessary to confirm the amount of residual smoothing agent and sample the smoothing agent, and then clean the needle bearing of the stamping outer ring. a. The cleaning of the needle bearing of the stamping outer ring can be divided into rough cleaning and fine cleaning, and the metal grid can be placed at the bottom of the used container. b. During rough cleaning, use a brush to clean the grease or adhesive in the oil. At this time, if you rotate the bearing in the oil, pay attention to the damage to the rolling surface due to foreign matters. c. During fine washing, the bearing shall be turned gradually in the oil and shall be stopped seriously. Generally, the detergent used is neutral diesel oil or kerosene without water content. According to the demand, warm alkaline solution is also used sometimes. No matter what kind of cleaning agent is used, always filter and keep clean. After cleaning, coating anti rust oil or grease on Japanese bearings immediately. 2. Inspection and discrimination in order to judge whether the removed bearing can be reused, it is important to check its dimensional accuracy, rotation accuracy, internal clearance, mating surface, raceway surface, sticking frame and sealing ring, etc. The inspection results can be judged by those who are familiar with the bearings. The criterion of discrimination is different according to mechanical properties, importance and inspection period. In case of any of the following damages, the needle bearing of the stamping outer ring shall not be reused and must be replaced. a. The fracture and defect of the parts of the needle bearing in the stamping outer ring. b. Peeling of rolling surface of raceway surface.