Its better to be
little flexible....

elastic and backlash free !

Servostar backlash free elastic couplings are designed with a pre-stressed elastomeric arm having a special profile that is sandwiched between the driver and the driven jaws of the coupling to provide a backlash free connection with high degree of positioning accuracy. A wide range of elastomeric materials help vary the torsional stiffness and damping capability of the coupling to avoid resonance and eliminate harmful vibrations.
In addition to keyed connections, Servostar couplings are also available with keyless split clamping hubs, and shrink disc connections
