Abstract: The invention relates to a roller mill, particularly a modular air-swept mill, with a rotary grinding pan on which roll grinding rollers and having columns, on which are mounted by means of rockers the grinding rollers, the columns being in each case fixed to a foundation frame and arranged as a mill foundation frame. For the use of stable and torsionally stiff columns for relatively large roller mills, according to the invention the foundation frames of the columns, together with the connecting frame parts are arranged in a mill foundation to form a circumferential foundation frame, particularly a polygonal or U-shaped frame. A gear foundation frame is located in the mill center separately from the circumferential frame and permits the construction of a different level of the particular areas of the mill foundation.