Industrial door drive units for fire ...
rated doors
The new WF helical beam couplings feature an optimised slot structure. As opposed to welded or adhesive couplings, the new helical beam couplings of the Walther Flender Group are made of one piece, which makes them many times more resistant to external influences such as moisture, dirt and lubricants than conventional couplings.
WF helical beam couplings are available immediately either with set screws or a removable clamping hub, which makes them even more versatile.
The couplings were designed especially for drive systems with small dimensions and low torques. They are backlash-free, torsion-proof and flexible, ensuring a high degree of conformity and precision throughout the entire service life.
rated doors
installations