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A method and apparatus for obtaining substantially uniform profiles of the roll mantles of an adjustable-crown roll and a counter-roll at a nip formed therebetween wherein the bearing distance of the counter-roll is substantially larger than the bearing distance of the adjustable-crown roll and wher

A method and apparatus for obtaining substantially uniform profiles of the roll mantles of an adjustable-crown roll and a counter-roll at a nip formed therebetween wherein the bearing distance of the counter-roll is substantially larger than the bearing distance of the adjustable-crown roll and wherein the nip is loaded by load forces applied to one or both rolls, preferably at regions of the bearings. A compensation moment is produced by devices situated within the mantle of the adjustable-crown roll between the bearings thereof loading both end regions of the roll mantle, the magnitude of the moment adjustable by adjusting the moment-producing compensation force such that the profiles of the deflected roll mantles of the adjustable-crown roll and the counter-roll at the nip are substantially uniform.

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A method for obtaining uniform profiles of roll mantles of an adjustable-crown roll and a counter-roll at a nip formed therebetween, wherein the adjustable-crown roll includes a fixed central axle and a hollow roll mantle rotatably mounted on the axle by bearings spaced from each other by a first be

A method for obtaining uniform profiles of roll mantles of an adjustable-crown roll and a counter-roll at a nip formed therebetween, wherein the adjustable-crown roll includes a fixed central axle and a hollow roll mantle rotatably mounted on the axle by bearings spaced from each other by a first bearing distance, and wherein the counter-roll is mounted on axle journals fixed to the counter-roll mantle by bearings spaced from each other by a second bearing distance which is larger than the first bearing distance, and wherein the nip formed between the adjustable-crown roll and the counter-roll is loaded by applying load forces to one or both of the adjustable-crown roll and the counter-roll, comprising the steps of: providing devices inside the hollow mantle of the adjustable-crown roll and within the first bearing distance operable for producing a compensation force which in turn produces a compensation moment which loads a respective end region of the roll mantle of the adjustable-crown roll; loading each end region of the adjustable-crown roll by a compensation moment through operation of said devices, said compensation moment being produced by directing the compensation force in a direction substantially parallel to the axis of the adjustable-crown roll upon components within the roll mantle of the adjustable-crown roll and wherein the compensation force has a torque arm having a length equal to the distance between the line of action of the compensation force and the central axis of the adjustable-crown roll; and adjusting the magnitude of said compensation moment by adjusting the magnitude of the compensation force whereby the profiles of the deflected roll mantles of the adjustable-crown roll and the counter-roll at the nip formed therebetween are adjustable to be substantially uniform.