Application guide
Balancing pumps in their own bearings
Pump vibration has many possible sources. Correct imbalance only after cavitation, misalignment, pipe strain and bearing condition have been checked.
Specifications checked: September 2026
Direct answer
Can a pump be balanced on site?
Yes, when the unit runs at a stable duty point, both bearing housings are accessible and the 1× component dominates the spectrum. Depending on the design, correction is applied to the motor rotor, coupling or impeller.
Before the first run
Mechanical checks come first
- Rule out cavitation, suction problems, pipe strain and coupling misalignment first.
- Check bearing condition, foundation bolts and soft foot on the motor and pump feet.
- Compare overall vibration with the 1× component. Correct imbalance only when 1× dominates.
Order of work
A controlled balancing sequence
- 01
Run the unit at its normal duty point with stable flow, pressure and speed.
- 02
Mount sensors on both bearing housings of the element being corrected—motor or pump side.
- 03
Record baseline amplitude and phase, then secure a trial weight in the accessible plane: coupling, motor fan or impeller.
- 04
Install the calculated correction at the same radius as the trial weight.
- 05
Verify at the duty point and re-check the readings after the first days of service.
Selection support
Not sure which system fits your machine?
Just write what machine you have — a fan, a crusher, a pump, anything that rotates. Our engineers will take it from there and confirm the right setup before you order.