Excessively high bearing temperature in multi-stage pump
Thread Content
Reasons for excessively high temperature of multi-stage pump bearing shells: 1. Insufficient oil volume or dirty oil quality; 2. Excessively small bearing clearance; 3. Concentricity outside the specified range; 4. Clogged cooling water lines resulting in insufficient water flow. Question: Are there any other reasons that could cause high bearing shell temperatures? II. What is the maximum temperature limit that the bearing shells can withstand? III. How long is the commissioning time for multi-stage pumps generally?
The pump load is too high; here we require it not to exceed 75 degrees. As for the testing time, it depends on your requirements – generally half an hour is sufficient
1. The balance disc is worn or the axial play is too large. Second, the rolling bearing angle should not exceed 75° ； The sliding bearing should not exceed 65° ； Third, the test run should last no less than four hours.