Vibration in Pumps

Vibration is a very vital parameter in pump operation.  Excessive vibration can seriously damage the pump and the connected fittings.  Hence it is necessary that any increase in vibration be investigated
and corrective action taken.

Excessive vibration can

  • damage the Impeller, bearings and bush rings
  • damage the packing
  • affect the wear rings and the setting of the impeller.
  • loosen the fastening bolts of the pump and the motor
  • damage the coupling
  • affect the motor and its bearings

There are many causes for pump vibration.  Some of the causes are mechanical in nature such as alignment, balancing and loose fitment.  There are also hydraulic causes such as water hammer and turbulence.