High 2x axial vibration motor for end suction pump

In response to you statement on 2X LF, have you confirmed that the "2x" is not 2X Line Frequency (100 Hz), using High Resolution and/or "power shut off" while "live" monitoring of the "2X". Could be a softfoot problem if the 2X disappears instantly on shutdown.

Thanks,

Ralph

Yafie,

2 cents on your post....the images you have posted are great, can you post images of all sides of pump base.

I see softness in how the current base is suspended above a hollow pocket, does not appear to be level and no axial support for motor.

The solo run of the motor has very high 2x axial, as Ralph stated above, you must make sure it is 2x or 2x line frequency to begin with. As Ralph also stated, loosen one motor foot then retighten, if the vibration dropped this foot is in a bind.

Can not quite see the whole non drive end of motor base support, I do not see any welds in this area? If you live time monitor the axial direction on the motor, use a pry bar on the gap present in the photo, while prying watch to see what happens to vibration, again if it changes this is a soft spot. You can use the motor foot axial direction on either end, no fan cover data. Is there similar gap on the base under the suction side of the pump?

Make sure ALL anchor bolts are tight. Photo shows somebody's shoes, check the base from the ground up, anchors are tight.

Pump shows quite a few harmonics at low levels of run speed. This can come from loose base/pump feet/coupling/bearing to shaft/bearing to housing/impeller to name a few. Quick up and down play check using dial indicator should be less than .002" of play or shaft runout.

Best of luck

Dave