At a glance
Glossary
Our glossary provides you with a quick overview of important balancing technology terms.
This makes it easy for you to keep track of all technical terms and understand the context immediately.
Glossary of balancing technology
Unbalance
The condition of a rotor when imbalances in the bearings cause forces and/or vibrations to circulate with the rotor. Unbalance is specified in gmm (or similar units).
Unbalance in the nth eigenmode, nth modal unbalance
Unbalance distribution that only influences the nth mode of deflection of an elastic rotor.
Unbalance amount
Product of the unbalance mass and the radial distance of its center of gravity from the shaft axis without reference to the angular position.
Unbalance force
Force in the balancing plane of a rotor that is created by the unbalance in this plane at a certain speed.
Unbalance reduction ratio (URV)
Ratio between the decrease in unbalance due to a correction and the previous unbalance.
Unbalance tolerance of an intrinsic mold
Limit value for the equivalent unbalance of a natural form of an elastic rotor.
Unbalance tolerance, permissible residual unbalance
Permissible value of the unbalance amount in a radial plane for a rigid rotor.