FTF bearing defects with side banding occurring BPFO

FTF bearing defects with side banding occurring @ BPFO in a motor bearing….

Velocity spectrum and acceleration waveform for the outboard motor position.

This the motor outboard bearing shown integrated to acceleration…. notice the BPFO aligned with the fault frequencies. Also, notice the side banding going on….

This is a zoom of one of the harmonics with side band cursors spaced @ 764 cpm…. this is FTF for the bearing in question.

Peakvue spectrum and waveform for the outboard motor position.

This the Peakvue spectrum zoomed to show FTF peaks for the bearing.

Peakvue waveform with FTF faults frequencies overlaid…

Autocorrelated Peakvue waveform with FTF faults overlaid…

Velocity spectrum and acceleration waveform for the inboard motor position.

This the inboard motor bearing with BPFO faults overlaid…. again notice the side banding…

Here's the side band spacing @ FTF again…

TWF from the inboard motor bearing with FTF's overlaid…

Now, I thought this was cool…. this is the acceleration TWF from the inboard motor bearing after being autocorrelated…. notice any periodic events?

You guessed it…. . FTF once again…there is also side banding going on…

Zoom of autocorrelated TWF

Here's the sideband spacing…. . it's BPFO…. .

Peakvue spectrum and waveform for the inboard motor position.

FTF faults overlaid on the Peakvue spectrum…

Autocorrelated Peakvue TWF….

FTF faults overlaid on the autocorrelated TWF…

Here's a zoom of the autocorrelated Peakvue TWF with the side banding overlaid with BPFO faults…

Velocity spectrum and acceleration waveform for the inboard motor position in the axial direction.

Velocity spectrum integrated to acceleration…. .

Here's the TWF…notice the G swing…. kinda high…

Autocorrelated TWF….

FTF overlaid on the autocorrelated waveform…

BPFO overlaid on the FTF peak in the autocorrelated TWF…

The End….