The high temperature fan bearing temperature exceeds the standard, which is one of the important factors that damage the bearing. The main reasons for the high temperature of the high-pressure blower are as follows:
(1) Poor lubrication quality. The purpose of lubrication is to make the dynamic and static parts not directly contact to produce friction, but to form friction between solid and liquid. If the amount of lubrication is insufficient or the quality is poor, the dynamic and static parts will be directly frictionally heated, or the heat cannot be taken away by the lubrication of the high-pressure blower, and the temperature of the high-pressure fan bearing will increase.
(2) The assembly quality of rolling bearings is poor. If the tightening force between the inner sleeve and the shaft is not enough, the gap between the outer sleeve and the bearing seat is too large or too small.
(3) The sealing felt is too tight and generates heat.
(4) The high-pressure blower bearing vibration is too large to bear the impact load, which seriously affects the stability of the lubricating film.
(5) The cooling water of the high-pressure blower bearing is insufficient or interrupted, which affects the heat removal and increases the bearing temperature.
(6) The bearing quality of the high-pressure blower is bad. The quality of the sliding bearing is poor, the contact with the Ujin is not good, or the tire is out of shape; the rolling body surface of the rolling bearing has cracks, chipping, flaking, etc., which will destroy the stability and uniformity of the oil film and cause the bearing to heat.