During the assembly process, the quality of the bearing material can also be checked to distinguish the quality of the bearing. After the inner ring of the bearing is assembled onto the shaft, under normal operating conditions, if the bearing material is not qualified, due to the deformation of the inner ring under force, it will cause deformation of the bracket or changes in clearance, resulting in inflexible rotation of the self-aligning roller bearing or detachment of the rolling element. In addition, the hardness value of the bearing is 60-65HRC, and any value higher or lower than this is considered unqualified. When testing the hardness of bearings, the inspection point should be selected on the side of the inner or outer ring to avoid damaging the bearing. During the experiment, a file can be used to file (or saw) the outer and inner rings of the bearing with a force of about 10N (or a steel saw blade with a force of about 5N). If there is a "click" sound and no chips are left, and only inconspicuous file (or saw) marks are left, it is considered that the hardness is sufficient. If the material can file (or saw) the chips, it indicates that the hardness of the material does not meet the requirements. In addition, before conducting the hardness test, it should be negotiated with the supplier first. When the supplier indicates that the hardness meets the standard requirements, if it does not meet the requirements, it can be returned.

1、 The incorrect installation position of the self-aligning roller bearing can cause significant axial force between the ball end face and the inner and outer race of the bearing seat, resulting in overheating of the bearing.

2、 The bearings used shall be selected with the specified precision level.

3、 The solution to the heating caused by the bending of the bearing spindle or the unevenness of the housing holes during use is to repair the spindle

4、 The solution to overheating caused by the bearing belt being too tight is to adjust the belt to ensure proper tightness.

5、 The solution to overheating caused by poor lubrication is to use specified lubricating materials and clean them appropriately.

6、 The solution to heating caused by low assembly quality is to improve assembly quality.

7、 The solution to the heating caused by the running of the inner shell of the rolling bearing is to replace the bearing and related worn parts, correct the diameter of the impeller balance hole, and verify the static balance value.

8、 The solution to overheating caused by excessive axial force is to clean and adjust the gap requirements of the sealing ring

9、 The solution to heating caused by damage to rolling bearings is to replace the bearings. When using self-aligning roller bearings, if we find that the temperature is very high, we should immediately stop the equipment operation, identify the cause, and follow the solution provided above. However, due to the different reasons for bearing heating, the solution may also be different. Therefore, it is still necessary to treat the situation specifically and complete it with the help of technical personnel.