I received some more information today. This is a ball mill in Gold Processing. The gearboxes for both drives are shaft mounted to the pinion shaft with an attached torsion arm. So the gearbox moves a bit during operation and would be a contributing factor to vibration by design.
The Mill was...
I have been out of the vibration field for awhile due to illness but had a request to give an opinion
A vibration survey was carried on this Ball Mill with a duel pinion drive. The vibration is high in all planes on both sides of the Mill or both pinion drives. The measurements were similar in...