Abstract: A controlled deflection roll has a revolving roll shell, a yoke which passes axially through the roll shell and is fixed against rotation, and at least one source of support arranged between the yoke and the roll shell. The source of support is at least partly operated with one of an electrorheological fluid (ERF) and a ferrofluid. The viscosity of the ERF and the ferrofluid can be varied using an electric field or a magnetic field.

Abstract: Deflection controlled roll that includes a rotating roll jacket, a rotationally fixed yoke arranged to axially pass through the roll jacket, and at least one hydrostatic support element arranged on the yoke to exert a supporting force on an inner side of the roll jacket. The at least one hydrostatic support element includes a pressure space, a hydrostatic pocket, and at least one restrictor or capillary coupled to the at least one hydrostatic pocket. The pressure space is structured and arranged to receive pressure fluid to charge the at least one hydrostatic support element, and the at least one restrictor or capillary is structured and arranged to convey pressure fluid to the at least one hydrostatic pocket. The pressure space and the at least one hydrostatic pocket are structured and arranged to be separately supplied with pressure fluid.