the glide shoes in a large variety of ways fig6 is a schematic illustration of a hydraulic central unit connected to the variable crown breast roll 20 the hydraulic unit forms a circulation system of lubrication having a supply line 26a in which the pressure of the lubricant is low the increase of the pressure takes place by means of a hydraulic pump 27 to about 20 to 30 bar a filter 28 is connected to the pressure side of the pump 27 and on an opposite side to a pressure regulator 29 from one side of the regulator an inlet line 26a for pressure medium passes to the variable crown roll 20 from the other side of the regulator the return line 26b of the circulation lubrication system starts the return line 26b of the variable crown roll 20 is connected to return line 26b in the present invention the transverse tension profile of the wire 10 and or possible instabilities of the wire 10 is are controlled actively by means of inside or internal regulation of the deflection of the mantle 21 of the variable crown breast roll 20 by whose means if necessary it is also possible partly to affect the draining profile in the transverse direction by means of the hydraulic regulation of the deflection of the mantle 21 of the variable crown roll taking place from inside the roll at least the extent of deflection is influenced or if necessary even the shape of deflection is affected in a preferred embodiment of the invention regulation in zones proper of the glide shoes 24 is not needed but the loadings of the glide shoes 24 are set.