News & Innovations

News and innovations published by German exhibitors

  back to overview


The first double-head sanding machine model SEZ-4-300 was gone into operation in a welding wire pre-treatment line with KOCH for an international major customer in Germany.
WiTechs has improved this model with the 2-roll flyer system (2-RFS), which has been proven in the SEZ-2-450 for more than two years.
It´s working with the same external dimensions and the technical data, such as max. wire entry speed of 2.4m/s with two different sanding belts.

Advantages of the 2-roll flyer system are:

  • less vibration during machine operation
  • larger loop and contact surface of the sanding belts
  • less wear of the roller bearings by the support arm
  • better sand belt tracking by increased roll dia. with 12% larger belt contact surface
  • more stable roller guidance
  • compatibility of flyers and flyer drives with SEZ-2-450
  • sanding belt dimensions of 1.440 x 300mm (l x w)

Further reading

Exhibitor: WiTechs GmbH


We use cookies and the web analysis tool Matomo in order to optimally design and continuously improve our website for you. By continuing to use our website, you agree to this. Further information and an objection possibility can be found here: Data protection