Backlash-free elastomer couplings are used to connect belt drive and spindle drive axes to the motor shaft. A clamping hub is required to fasten the vibration-damping couplings to the motor, whereas different hubs are needed to fasten the couplings to the axis, depending on the axis involved. If a belt drive axis is used, expansion hubs are ideal, whereas for spindle drive axes, clamping hubs are available. Between the two coupling elements, an elastomer insert ensures a backlash-free, fail-safe and damped connection.