Line of dots …

Discussion in 'KBA Printing Presses' started by Apolloeagle, Oct 7, 2021.

  1. Apolloeagle

    Apolloeagle New Member

    Joined:
    Feb 2020
    Messages:
    2
    Location:
    Uk
    Hi when I select the differential drive on a KBA 106 rapida, after about 1500-2000 sheets into a run ,a line of dots appear 28 mm apart all the way from the grip to back of sheet ? Anyone experienced this before ? Thanks
     
  2. georgbob

    georgbob Member

    Joined:
    Jul 2019
    Messages:
    17
    Location:
    Hungary
    Hi,
    probably damaged the damping roller
     
  3. georgbob

    georgbob Member

    Joined:
    Jul 2019
    Messages:
    17
    Location:
    Hungary
    small hole in the surface
     

  4. Apolloeagle

    Apolloeagle New Member

    Joined:
    Feb 2020
    Messages:
    2
    Location:
    Uk
    Hi , we changed the damper straight away , the fault only occurs after 20 minutes running and with the diff selected . If we knock the diff off we don’t have the dots ? I think that the rider roller below the damper has a knick in it . But as usual in a busy print shop we never have the time or a proper roller maintenance program. ‍♂️
     
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