High vibration is a common problem for motors installed on top of vertical pumps. Its source can stem from a mechanical issue with the pump, motor, or coupling — or even hydraulic forces from the pump ...

The proper shaft alignment procedure is to secure the driven equipment first, and then install the coupling to the equipment. Moving a pump, for instance, would impose stress upon the connecting ...

A pulley with runout (warpage) has the same effect as improper alignment because it puts unacceptable side-loads on the belt. If you use a water-pump pulley that's too small and a crank pulley ...

That’s because the pump and motor must be rigidly and accurately mounted to ensure alignment of the pump and motor shafts. The pump may require a pilot surface to mate with a pilot bore on the ...