Analysis of the reasons for oil leakage due to damaged frame bearings in mixing equipment
Thread Content
A mixing equipment with a diameter of 2200 and a height of 2200, operating at a mixing speed of 70 rpm and with a power rating of 7.5 Kw. After approximately 2 hours of operation, the bearings in the gearbox frame were damaged; the temperature at those bearings exceeded 120 degrees, and oil leakage occurred at those areas. PS: Within the first hour or so of operation, the nut on the bearing cover wasn’t tightened properly, and there was no oil leakage; oil leakage only started after the nut was tightened. The temperature measured was over 120 degrees. Is this structural design reasonable?
Could it be that the interference between the bearing cover and the bearing is causing heating?
If the bearing cover isn’t tightened properly, the bearing will definitely shift out of place, and the outer ring of the bearing as well as the bearing housing will get worn out.
The tightening of the gland compresses the axial clearance, which causes the bearing to overheat; the high temperature damages the skeleton oil seal, leading to oil leakage – a vicious cycle that ultimately results in the bearing being damaged
Blade balance must also play a role; a larger shaft diameter helps