Aspects of the main impact of KOYO bearing installation on life

There are many factors that determine the length of the bearing life, but it can be roughly divided into two types, one is the internal factor (the factor of KOYO bearing itself), and the other is the external factor of the bearing.
The internal factors of the bearing mainly include three factors: structural design, manufacturing process and material quality.
Bearings are generally manufactured through multiple processes such as forging, heat treatment, turning, grinding and assembly. However, the rationality, advancement and stability of each processing technology will also affect the life of the bearing. The heat treatment and grinding processes that affect the quality of the finished KOYO bearing usually have a more direct relationship with the failure of the bearing.
The metallurgical quality of KOYO bearing materials was the main factor affecting the early failure of rolling bearings. With the advancement of metallurgical techniques (such as vacuum degassing of bearing steels), the quality of raw materials has improved. The proportion of raw material quality factors in bearing failure analysis has dropped significantly, but it is still one of the main factors affecting bearing failure. The proper selection of materials is still a factor that must be considered in bearing failure analysis.
 (1) The condition of adopting a small interference fit to the fixing ring is that both sides of the matching surface have high shape accuracy and small roughness, otherwise it is difficult to install and it is difficult to disassemble. In addition, the influence of the spindle thermal elongation needs to be considered. .
 (2) The main shaft of the paired double-angle contact ball bearing is lighter, and if the interference is too large, the axial pre-tightening amount will be significantly larger, which will cause adverse effects. The main shaft of the double-row short bearing and the main shaft of the bearing have a relatively large load, so the interference between them is relatively large.
 (3) The roundness of the shaft and the seat hole and the perpendicularity of the shoulder should be required according to the corresponding accuracy of the KOYO bearing.
 (4) It is necessary to accurately calculate the interference of the rotating ferrule, and accurately calculate the appropriate amount of the fixed ferrule.
The amount of interference of the rotating ferrule should also be smaller within the possible range. As long as the thermal expansion effect at the working temperature and the centrifugal force at the highest speed are effectively ensured, the creeping or sliding of the tight fitting surface is not caused. The fixed ferrule is selected according to the working load size and KOYO bearing size, and a small clearance fit or interference fit is selected. Too loose or too tight is not conducive to maintaining the original precise shape.
 (5) If the KOYO bearing is running under high speed conditions and the working temperature is high, special attention should be paid to the fact that the rotation of the rotating ferrule should not be too loose to prevent eccentric vibration, and the fit of the fixed ferrule should not occur to prevent the ferrule. Deformation under load and vibration