What are the structural problems of imported bearing damage? From the analysis of the damage of the imported bearing, it is found that the structure has the following problems: 1. What is the problem with the sealing performance. In particular, a part of the bearing end cover must be infiltrated with lubricant. When the PH value of the lubricant is lower than 6, the bearing will be rapidly corroded, and the steel ball cannot rotate normally. Finally, the imported bearing will rust and run away from the inner and outer rings, which is more serious. The glue itself and the mandrel are all damaged. 2. The problem of axial force of imported bearings. In addition to the rust and damage due to lubricant invasion, the bearing will continue to appear 'loose', that is, the bearing steel balls are scattered from the 'flower basket' to the drum, making the printing plate drum, eraser drum, glue, etc. The surface layer is severely damaged. The general solutions are: modify the glue itself and set a reliable sealing structure to prevent the lubricant from penetrating into the bearing. Adjust the imported bearings so that the bearings have proper backlash and axial force to prevent damage to mechanical equipment caused by loose bearings.