shell 2 when a load occurs in the roll gap without touching its inside circumference 3 the forces due to the line pressure in the roll gap are transmitted via a pressure liquid to the cross piece 1 which bends under the action of these forces and generates in this manner the counterforces which bring about an equilibrium the pressure liquid is contained in a longitudinal chamber which is formed in the space 4 and is divided off by the transverse end seals not shown which define the space 4 in the axial direction as well as by longitudinal seals 5 which are arranged on both sides of the cross piece 1 such a longitudinal seal is located on the left side of the cross piece according to the drawing in the illustrated embodiment the two longitudinal seals 5 lie in a connecting plane 6 which is a meridian plane perpendicular to the plane of action of the roll by means of the transverse end seals and the longitudinal seals 5 two longitudinal chamber 7 and 8 both of which can be filled with pressure liquid through feed lines not shown are formed the longitudinal seal 5 is designed symmetrically with respect to the connecting plane.