Hi. I am trying to figure out why I ain´t seeing clear bearing defects. Motor sounded awful and obvious clearance ( I could move the axle littlebit )
I also checked old FFT and nothing that I could see...cut maybe I am missing something.
In this FFT for NDE H motor is running free. Note very high 2X and hardly any 1X. Bad sound from motor but nothing noticeable from acceleration spectrum ( bearing foults )
Here is DE Vertical, again high 2X and floor rising. Is it possible that bearing is in such bad condition that bearing frequency is not seen
And DE Horizontal. Again very very high 2X
Here we see DE Axial, and Ball Pass Frequency outer race is seen now. Motor is also running free ( no coupling )
And last one...
Here Motor is coupled with fan. Now 1,5 X appear...I have no clue what it could be.
Different speed this time 2400 rpm/40Hz
If I am missing some information please let me know.
400V/50hz motor - 2980RPM. 6314 SKF DE & NDE