- Telescopic coupling for transmission of drive torques on very big VariVent® winding systems.
- For use with variable axial offset between output shaft of power drive/manual drive and winding shaft.
- Smooth and quiet length adjustment with high-performance rollers, 60 x 60 mm rectangular aluminium tube with 2 steel universal joints, plastic spacer cylinder to assure correct distance away from building.
- Version ‘47’ with internal adapter for 50 x 1.5 mm aluminium winding tube.
- All parts stainless, i.e. non-rusting.
The quality product from the inventor!