The invention relates to a two roll press having press rolls positioned side-by-side, the axes of which are mounted in bearing housings guided between parallel horizontal guiding surfaces in lateral frame members of the press frame, said guiding surfaces extending each to the ends of said frame members, and connecting frame heads provided in the area of the ends of said frame members, said connecting frame heads forming the abutments for the bearing housings and being detachably connected to said frame members, and being provided with means which enable them to be brought into a horizontal position in such way that one of the surfaces being in vertical position serves as guiding surface in vertical and lateral alignment with the guiding surface of the lower frame member.