Glossary Balancing Technology

Field balancing equipment

Measuring equipment used outside of a balancing machine with balancing under operation.

Flexible rotor

Rotor with an unbalance distribution that shows deflections depending on speed, which cannot be neglected.

Flexural critical speed

Speed at which a maximum bending deflection of a rotor occurs. This deflection should then be bigger than the vibration displacement of the journals.

Flexural principal mode or eigen mode

Characteristic deflection curve that a rotor shows at a critical speed.

Foundation

Structure which supports a balancing machine.