The SFC model is a metal disk type coupling with lightweight and high-strength aluminum alloy used for the clamp hub. It has a high torsional rigidity and responsiveness. The SFC-SA2 with single element and ultrahigh rigidity and the SFC-DA2 with double elements and flexibility are available. Each type has a green design corresponding to the RoHS. Permissible torque 0.5Nm to 250Nm Drilled bores 4mm to 45mm Backlash Zero.