Pump coaxiality
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After the pump’s coaxiality is adjusted, the fluid always flows in the outlet direction; can the stress from the flexible coupling pull the pump?
Is the shaft end distance in compliance with the standards? The few words you mentioned indicate a lack of understanding
The corrected coaxiality results in minimal displacement during operation; if the displacement is large, it indicates severe bearing wear, and the bearings need to be replaced.
If displacement is caused by severe bearing wear, then the pump’s vibration levels will increase or abnormal noises will be heard. Does this kind of situation occur? If not, check the anchor bolts to see if they have stripped. If the pump is positioned in one direction, the anchor bolts in the opposite direction may have become ineffective.