Abstract: A roller press (1; 11) for grinding of granular material and comprising two or more rollers (3, 5; 13, 14, 15) alternately rotating in opposite directions, of which at least one is displaceable in a guideway (7; 16, 17) and where only some of the rollers (5; 14) are connected to a driving means. According to the invention the guideway for each of the displaceable rollers is provided so that it is substantially parallel to the resultant force on that roller. As a result, virtually all of the resultant force acting on the displaceable roller will be acting substantially eliminating the reaction force at right angles to the guideway.

Abstract: A roller press comprising two rollers which rotate in opposite rotational directions, the rollers being driven via two gear units mounted on the roller shafts and having means for counterbalancing the oppositely-directed torques arising in the gear units in the form of a torque reaction system, eliminating the need for a torque absorption mechanism attached to the machine frame of the roller press.

Abstract: A vertical roller mill includes a grinding table positioned for rotation around a vertical axis and two upright grinding rollers resting on their peripheral grinding surfaces on the grinding table for grinding material thereon. Each of the grinding rollers is rotatably mounted on a respective fixed horizontal shaft connected at one end to a common, central frame and at the other end to a draw bar. Preferably, the draw bar is regulated by a hydraulic cylinder secured in a bracket which is anchored in the mill foundation.