A method for grinding a grinding material in a mill including a grinding body and at least one roller which rolls on the grinding body under a grinding pressure, wherein the grinding material is fed in a stream of grinding material, forms a grinding bed between the grinding body and the roller and is crushed in the grinding bed by the roller, wherein a grinding bed height of the grinding bed between the grinding body and the roller is continuously measured, and wherein the mill is controlled based on control variables to achieve a predetermined nominal condition, wherein the control variables include at least the grinding pressure and the stream of the grinding material and the nominal condition includes at least one nominal value for the grinding bed height, wherein a mechanical condition of the roller and therefrom a stability of the grinding bed are continuously determined.
