Run Out

Twice the radial distance that the center of the shaft is displaced from the axis of rotation.

Run-out can be caused by:

  • Operating off of the pump's best efficiency point (BEP).
  • Dynamic unbalance of the rotating assembly.
  • A bent shaft.
  • A non-concentric shaft sleeve or mechanical seal
  • Cavitation
  • Vibration



  • On February 16, 2018