Akhil Rathore posted:
Hope you have checked for bearing fault frequencies
confirmed that this peak is not from the driven component through motor solo.
Bearings along with new bearing housings have been installed. On gearbox body, two close peaks i.e. 84.5Hz and 86.9 Hz were observed each with magnitude ~1mm/s. Spectrums have been shared in my earlier post (can share again if required). However on motor it's single sharp peak. 85Hz peak is also visible in motor solo run but of smaller magnitude. At no load as well as on solo, vibration magnitude are quite low.