Abstract: The invention relates to a calender bowl which can be heated by means of a heating medium that is in a liquid or gaseous state of matter. The calender bowl comprises a roll body (1) that is provided with peripheral bores (4) and flange journals (2, 3) comprising supply and discharge conduits for the heating medium. Thermal insulating bushes (8) are mounted on the end areas of the peripheral bores. The heating medium flows through the peripheral bores. The aim of the invention is to adapt the heat transfer from said bores to the lateral surface of the roll body to the respective heat requirements in such a way that the harmful measured differences stay within limits so that the product is not impaired. To this end, adjusting devices are allocated to the flange journals for controllably turning and/or axially displacing the insulating bushes.

Abstract: A paper processing roll for use in a calender of a paper-making machine which during operation can be exposed to increased temperatures is provided with a heat-treated surface which is produced by hot-grinding or hot-balancing or both.

Abstract: A rotatable roller has a roller body with channels for guiding a medium through the roller body for controlling the temperature of the roller body. At least one of the channels has a separating member separating the at least one channel into separate channel portions such that media having different properties are separately guided through the at least one channel. The separating member is helically shaped.

Abstract: A rotatable roller has a roller body with channels for guiding a medium through the roller body for controlling the temperature of the roller body. At least one of the channels has a separating member separating the at least one channel into separate channel portions such that media having different properties are separately guided through the at least one channel. The separating member is helically shaped.

Abstract: A paper processing roll for use in a calender of a paper-making machine which during operation can be exposed to increased temperatures is provided with a heat-treated surface which is produced by hot-grinding or hot-balancing or both.

Abstract: A rotatable roller has a roller body with channels for guiding a medium through the roller body for controlling the temperature of the roller body. At least one of the channels has a separating member separating the at least one channel into separate channel portions such that media having different properties are separately guided through the at least one channel. At least one deflecting member is arranged in the channels and acts on the medium for imparting an additional flow direction onto the medium flow.

Abstract: An induction heating system for a thermal roller comprises a rotatable hollow roller jacket having flanges at opposite ends thereof, the flanges concentrically surrounding the axis of the roller jacket and the roller jacket defining an enclosed space, and an inductor arranged within the enclosed space and inductively coupled with the roller jacket, the inductor consisting of an inductor spool through which a current flows and a magnetic core formed by the roller jacket, the inductor spool comprising a plurality of elongated outer current conductors peripherally arrayed close to an inner surface of the roller jacket and extending parallel to the axis at least across the greatest surface width of the roller jacket, the inductive coupling with the roller jacket being adjustable in zones, and flanges concentrically surrounding the axis, the roller jacket flanges forming bearings for the inductor spool flanges.

Abstract: A thermally regulatable calender roll, e.g. for drying paper webs, can have a roll body centered on a pair of flanged stub shafts whose flange on at least one end of the roll body can be provided with at least one annular groove or chamber communicating with the heating bores of the roll body. The pitch circle of the heating bores is located outwardly of the pitch circle of the bolts attaching the flanges to the roll body and the heating medium is fed through at least one of the stub shafts to the annular groove and the bores.