Provides a mechanical connection, support and centring between rotor and machine shaft Backlash free, torsion-proof transmission of torque generated by the torque motor High true running accuracy Optimally configured contact pressure prevents undesirable deformation of hollow machine shafts Taper Collet chemically nickel-coated to prevent fretting corrosion Easily removable Cone Clamping Element, even after long periods of operation Centring bush can be mounted from the B-side of the torque motor