Problem with 840 Vermeer Discpro discbine

[Greg5395]

I got a 2007 840 Vermeer Discbine with two metal rollers and it started vibrating pretty bad. I think the bearing on the top right is bad. Does anyone have any help with how to change it out and is the roller and shaft all in one piece.
Thanks Greg

 

[Greg5395]

I got the bearing out and it wasn't bad and can't figure out why it is shaking so bad.