Glossary Balancing Technology

Amount of unbalance

Obtained by multiplying unbalance mass with its radial distance of its center of gravity from the shaft axis without referring to its angular position.

Angle of unbalance

Angle at which an unbalance mass is located (referring to a polar coordinate system, which is fixed to the shaft axis and rotating with the rotor).

Angle reference generator

Component of a balancing machine which generates a reference to determine the angular position of the rotor.

Angle reference mark

Mark at the rotor in order to create a fixed angular reference system.


Aerospace Recommended Practice.

Auto-balancing device or active balancing system

System, which automatically compensates changes of the unbalance during operation.

Axis of rotation

Straight line, about which a rotor actually rotates.