Expander assembly
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Our company currently has 2 expanders, and the temperature at the expansion end is always lower than the temperature of the shaft sleeve at the compression end. But after repairing that unit and turning it back on, the temperature at the expansion end was higher than that of the bearings at the compression end. The technician said that the gap at the expansion end had been adjusted intentionally to raise its temperature. I would like to ask: in your experience, is the temperature at the expansion end higher or lower than that of the bearings at the compression end? Is there any way to adjust the bearing gaps in order to change the temperature?
In my opinion, there should be no assembly method for hole-shaft fits that involves reducing the clearance in order to increase temperature; the assembly should be carried out in accordance with the design or assembly specifications.
What should be the bearing temperatures at both ends of the expander?