This accessory set-up enables the response of an elastic rotor to unbalanced excitation to be studied. The field balancing of elastic rotors is another area which can be investigated. The supplied pendulum ball bearings ensure full mobility of the shaft. The subcritical, supercritical and resonance running states can be demonstrated. A comparison of the orbits (path curves) in the subcritical and supercritical range is of particular interest. The retainer bearing limits the amplitudes to harmless values at speeds close to resonance.
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