Method for the detection and quantitative evaluation of a balance error in a shaft-bearing system

A method for determination of a balance error of a component mounted in an antifriction bearing, wherein the bearing includes a ring attached to the component, another ring and rolling elements between the rings and includes, sensors arranged on the antifriction bearing in measuring bridges, wherein the sensors change their respective electric resistances as a function of pressure on the sensors;

• the method comprising:
• determining the static and dynamic forces acting on the bearing with the sensors and the bridge and providing the determined forces to an evaluation device for analysis, wherein the forces are provided in the form of a periodic and amplitude-modulated measured signal which is common to both the static and dynamic forces
• determining a period and a frequency of the oscillation produced by the balance error force and determining their variance from the measured signal, comparing the variance is with a predefined variance threshold value, such that when the determined variance falls below the variance threshold value, that is assessed as an indication of a balance error in the bearing.