Abstract: The present invention relates to a combined rotary feed-through having stationary and rotating contact parts for transferring fluids, data and electrical energy, comprising a housing, which has a fluid unit as a rotary feed-through for fluid connection in the connection-side region of the housing, said fluid unit having at least one feed port and at least one discharge port and a rotatable shaft, and the housing also having at least one communication unit as a rotary feed-through for transmitting electrical signals in an operation-side region of the housing, said communication unit having at least one electronic connection point. The combined rotary feed-through also comprises at least one supply unit for transmitting electrical energy as a rotary feed-through on the end face of the operation-side region of the housing, said supply unit having at least one electrical connection point.

Abstract: A rotary feedthrough for the feedthrough of a powder-gas mixture from a stationary machine part into a rotating machine part, with a seal in the form of two flat circular-ring-shaped sliding seal surfaces arranged one on the other in a sliding manner, which sliding seal surfaces are arranged concentric to the axis of rotation of the rotating machine part and which can be moved apart from each other in the axial direction, so that they form a gap, wherein the seal is embedded in a purge chamber having at least one gas inlet and at least one gas outlet.

Abstract: The invention relates to a ring electrode for a slip ring for transmitting electrical energy between machine parts, of which at least one machine part can be rotated in relation to another machine part. The ring electrode and corresponding slip ring can be economically produced and have low wear. The electrode is made of a rod material made of stainless steel, which is rolled into a ring and the free ends of the ring are brought together to form a closed ring.

Abstract: The invention relates to a ring electrode for a slip ring for transmitting electrical energy between machine parts, of which at least one machine part can be rotated in relation to another machine part, a corresponding slip ring, and a method for producing a corresponding ring electrode. In order to create a ring electrode and a corresponding slip ring, and a method for producing said ring electrode, which ring electrode and corresponding slip ring can be economically produced and have low wear, the electrode according to the invention is made of a rod material made of stainless steel, which is rolled into a ring and the free ends of which are brought together to form a closed ring.

Abstract: A bush of a radial rotary union joint including a hollow-cylindrical main body whose inner cylindrical surface forms a sliding sealing surface divided by a peripherally extending inner groove into a first and a second sliding sealing surface and having a cylindrical outside surface which is divided by a peripherally extending outer groove into a first and a second outside surface. The wall portion separating the inner and the outer grooves has at least one bore connecting the two grooves. The first and the second outside surface can be sealed off by a stationary sealing ring in relation to a housing embracing the bush. The side surfaces of the inner groove are of the same size within a tolerance threshold of +20% and ?35% as the side surfaces of the outer groove.

Abstract: A bush of a radial rotary union joint including a hollow-cylindrical main body whose inner cylindrical surface forms a sliding sealing surface divided by a peripherally extending inner groove into a first and a second sliding sealing surface and having a cylindrical outside surface which is divided by a peripherally extending outer groove into a first and a second outside surface. The wall portion separating the inner and the outer grooves has at least one bore connecting the two grooves. The first and the second outside surface can be sealed off by a stationary sealing ring in relation to a housing embracing the bush. The side surfaces of the inner groove are of the same size within a tolerance threshold of +20% and ?35% as the side surfaces of the outer groove.

Abstract: The present invention relates to a radial rotary transmission leadthrough with a rotating shaft which has at least two substantially axially running channels (4, 4?) which have radial transition openings (5) open to the periphery of the shaft, and with at least one guide bush (2, 2a) tightly surrounding the shaft (1) in the area of the transition openings (5) which has at least one radial feed bore each (6) for every one of the channels (4, 4?) to be connected via the bush (2, 2a), wherein the different channels (4, 4?) have their radial transition openings (5) at different axial positions of the shaft (1).

Abstract: The present invention relates to a radial rotary transmission leadthrough with a rotating shaft which has at least two substantially axially running channels (4, 4?) which have radial transition openings (5) open to the periphery of the shaft, and with at least one guide bush (2, 2a) tightly surrounding the shaft (1) in the area of the transition openings (5) which has at least one radial feed bore each (6) for every one of the channels (4, 4?) to be connected via the bush (2, 2a), wherein the different channels (4, 4?) have their radial transition openings (5) at different axial positions of the shaft (1).