Suitable for the balancing of rotors with a known axial length and with weight in the range 10 g up to 100.000 kg. The driving power, necessary to have the rotation of the part to be balanced, is substantially obtained by two types of drives: belt or cardan. The two driving types may be also supplied together so significantly increasing the operating range and the friendly use. All the machines in the Z series have hard bearings so giving the chance to calibrate it immediately only considering the rotor dimensions. Once you have chosen the correction planes, all you have to set on the machine are distances of these planes from their respective pedestals, the distances between the planes and the correction diameters.