Introduction to Bearings by Hunan Jintai Hardware and Machinery Co., Ltd. In the event of any of the following conditions, do not continue to use the bearings. Replace the bearings with new ones immediately to prevent the occurrence of unnecessary incidents.
      1. The bearing ring or roll body has a breakage on any one of them;
      2. The bearing inner ring surface or the outer ring outer diameter surface has significant creep;
      3, the inner ring of the bearing, the outer ring, the roll body, and any one of the cages have cracks or gaps;
      4. Rolling surface of the bearing, rust and injury on the roll body;
      5, the bearing raceway surface, roll body has a severe indentation and scars;
      6, the bearing raceway, ribs, roll body has a significant card injury;
      7. Significant discoloration due to heat;
      8. The cage of the bearing wears significantly, and the rivet may loosen considerably.