Device and method for milling input material

A roller press apparatus configured as a roller mill for grinding feedstock, comprising:

• a fixedly mounted fixed roller with an at least approximately positionally fixedly mounted roller axis;
• a floating roller mounted in a floating manner with a positionally variable roller axis that is positionally variably arrangeable relative to the fixed roller;
• a frame on which the fixed roller is mounted;
• a force action unit configured to act on the floating roller at a force action point;
• wherein by way of the force action unit, the fixed and floating rollers are mountable and positionable relative to one another for applying a grinding force and making mutual contact at a roller contact point or defining a grinding gap for the feedstock,
• wherein the floating roller is mounted so that the floating roller is pivotable about a pivot axis in a manner of a one-sided lever such that a relative position of the floating roller relative to the fixed roller is definable by a pivoting movement, wherein the one-sided lever is disposed between the pivot axis and the force action point;
• wherein the pivot axis is arranged on a tangent of the fixed roller and the floating roller at the roller contact point or, in the case of a non-zero grinding gap, the pivot axis is arranged between the tangent of the fixed roller at an intersection point of a connecting line between the positionally fixedly mounted roller axis and the positionally variable roller axis and a tangent of the floating roller at the intersection point.