Precisely machined shaft to receive a rotor with no own journals for balancing.
Evaluation of the principal axis of a rotor. Information will be used during the successive machining of journals, recesses and pilots or reference planes in order to closely align the later rotational axis with the principal axis.
Distance between mass center and shaft axis with a rigid rotor.
A derivative of a real rotor with defined accurate positions to attach calibration masses. It will be regularely used to check a balancing machine.
Radial rotor plane for which an unbalance vector will be determined.
Actions in order to setup the mechanical part of a balancing machine to balance a rotor.
Change of the mass distribution of a rotor to reduce unbalance, or vibration caused by unbalance, to an acceptable value. Corrections are usually made by adding material to, removing material from or relocating material at the rotor.
Smallest value for the residual unbalance, which can be achieved with a balancing machine.
Limit for the equivalent modal unbalance of a flexural principal mode of a flexible rotor.
Method that uses information about the flexural principal modes obtained in the vicinity of the respective critical speeds to balance a flexible rotor.
Describes the course of a flexural principal mode depending on the rotor's axial coordinate. Function is limited to a max. value of one.
Methods which use more than two planes when balancing flexible rotors.
