R700 First ink form roller jumps on the operating side

The first ink form roller jumps on the operating side.
When I look through the cover on printing press at the first form roller, it moves too much and jumps a little.
The roller has no contact to the plate and cannot be adjusted.
I have removed it and measured 70mm.
The roller lock closes very easily just so engages.
The roller mount does not move much, I thought it was something broken. I have found nothing.

I put everything back together and adjusted.
Roller could also be adjusted to the plate. Thought the problem was solved......but no

Do you have any ideas?

R700 year 2000

 

Could be a bearing problem

 

The bearing of the roller seems ok.

 

Remove the bridge (tandem) roller and try.

 

Does it work without tandem ?
What will i see ?

 

If bridge is too tight it will cause bounce.