Abstract: A press roll contains a stationary carrier, a jacket tube with a roll jacket and a plurality of pneumatically loadable rollers in order to support the roll jacket at the press position on the carrier. The press roll is especially suited for use as an F-roll or as a K-roll in machines for treating web-like or plate-like material, for example printing machines, textile machines or the like.

Abstract: A pressure roll having a fixed carrier and a rotating elastically deformable roll jacket that cooperates with a counter-roll and that is supported on the carrier via a hydrostatic support arrangement. The roll jacket has an inner surface that is movably guided in the peripheral direction over a concave support surface. The roll jacket is executed with a wall that is flexible in the radial direction and can conform to the counter-roll over a pressure zone whose width dimension in the peripheral direction is adjustable within a range of at least 8 mm to circa 40 mm. Furthermore, the roll jacket consists at least partially of an electrically conductive material in order to prevent an uncontrolled electrostatic charging of the jacket surface.