View Full Version : Noise Coolant Pump

04-24-2013, 01:20 PM
This is on a Nardini Lathe with 3 phase. The coolant pump is loud enough to be annoying. I will try putting the metal sump on a rubber pad to try to reduce this.
Any other thoughts or recommendations would be appreciated.

04-24-2013, 01:23 PM

Is it a gear pump? Might not be able affect the noise short of replacement.

04-24-2013, 01:35 PM
If impeller type, make sure that nothing is jammed/stuck to the impeller or a broken blade causing off balance vibration.

Jaakko Fagerlund
04-24-2013, 02:47 PM
Add rubber between pump and metal and put some heavy weight on the metal, changes the sound to much more pleasant humming.

04-24-2013, 09:18 PM
Might be bad bearings in the motor if it has them.

J. R. Williams
04-24-2013, 09:40 PM
A chip in the pump?