Hello to everybody,
I have been taking vibration data from 12 vibrating screens drive systems for a year.
In three of them we have had severe vibration increments from 4 to 6 mm/s to 20-30 mm/s in horizontal and from 3 to 4 mm/s to 8-9mm/s in axial direction
Spectrum shows 1x from screen frequency (842 CPM) and phase shows like unbalance.
SCREEN 401 TREND AND SPECTRUM M2H
We suggested Maintenance people to inspect the cardan coupling and vibration later was lower in axial direction but still remained high in horizontal (cardan was actually replaced for later inspection)
SCREEN 302 TREND AND SPECTRA M2H AND L2A
If any of you have had a similar case and found a solution please let me know. I would really appreciate that. You can find attached a PDF with graphical info of screen.