Synchronisation, even with high displacements
The Semiflex transmits torque via two pairs of 90°-offset parallel links. They connect the input and output disc with the centre disc. In case of aligning shafts, all three discs are also in an aligned position. In case of occurring radial displacement, the links move parallely as one group and let the centre disc radially divert by a corresponding extent. Since each pair of the coupling links always remains internally parallel to each other, the connected shafts remain totally synchronized without phase shift and consequently absolute constant angular velocity.
Picture: Input disc (blue) connected to centre disc via parallel pair of links 1; Output disc (green) connected to centre disc via parallel pair of links 2
Radial displacement of the input disc through force-free swivelling movement of pair of links 1
Radial displacement of the output through force-free swivelling movement of pair of links 2
Both pairs of links swivel; in so doing, they remain always parallel to each other, which ensures synchronisation regardless of the radial displacement height.