It is necessary to judge whether the secondary bearing parts can be used again in turn and record whether the use is better than worse when checking the bearing equipment for regular maintenance and operation and the bearing disassembled during the replacement of peripheral parts. Also want the mortar spray machine to investigate and record the bearing and appearance of the removed. To find out and investigate the residual amount of lubricant, clean the bearing well after sampling. Secondly, check the raceway surface of the bearing, the status of the rolling surface and the matching surface, as well as the state of the mortar sprayer of the retainer, whether there is any damage or abnormal situation, especially to observe the running track of the raceway surface. To judge whether the bearing can be used again, we should consider the degree of bearing damage, the performance of the mortar spraying machine, the importance of the running conditions of the mortar spraying machine, the inspection period and so on before deciding. Check the results, if found bearing damage to the mortar spraying machine and abnormal conditions, please find out the cause of bearing damage according to the phenomenon, formulate countermeasures. In addition, the inspection results, if there are the following defects, the bearing can no longer be used, the need to replace the new bearing. Any of the inner and outer rings, rolling bodies, or retainers that have cracks and debris.
