Method for controlling the line pressure distribution of a roller and corresponding roller

In a roller comprising a revolving hollow cylinder forming the working roller circumference, and a stationary cross head which extends lengthwise through the hollow cylinder and leaves space all around from the inside circumference of the hollow cylinder, said roller having longitudinal chambers which are divided off by longitudinal seals which are arranged between the cross head and the inside circumference of the hollow cylinder on both sides of the action plane of the roller and past which the inside circumference of the hollow cylinder slides, at least the chamber situated on the side of the roll gap adapted to be filled with fluid pressure medium, the improvement comprising:

• (a) ring-shaped sealing elements disposed in one of the longitudinal chambers, said elements attached to the cross head and resting against the inside circumference of said hollow cylinder forming zones in said chamber with a pressure different from the longitudinal chamber;
• (b) feed lines arranged in the cross head opening into said sealing elements;
• and
• (c) controllable valves for coupling said feed lines to a region of pressure lower than the longitudinal chamber.