Abstract: A device for sealing a rotating shaft that penetrates a stationary housing wall has a sealing ring fastened to the housing wall and arranged between the housing wall and a shaft. The sealing ring has sealing oil supply bores supplying sealing oil into a sealing gap formed between an inner wall surface of the sealing ring and an outer wall surface of the shaft. The inner wall surface has pocket-shaped recesses where the sealing oil supply bores open. The pocket-shaped recesses extend in the circumferential direction of the sealing ring. The inner wall of the sealing ring has at least one circumferential boundary stay that delimits and seals the pocket-shaped recesses in an axial direction of the sealing ring toward the first or second housing side. The inner wall surface of the sealing ring has a circumferential groove that connects the pocket-shaped recesses to one another.

Abstract: In a method for repairing electric insulation layers between sheet metal pieces of sheet metal segments of electric generators or motors, wherein between two neighboring sheet metal pieces an electric insulation is arranged, two neighboring sheet metal pieces are spread apart by introducing a tool for generating a permanent channel-shaped intermediate space between the two neighboring sheet metal pieces. Into the intermediate space, a curable, electrically insulating insulation material as an electric insulator is forced.

Abstract: A device for sealing a rotating shaft that penetrates a stationary housing wall has a sealing ring fastened to the housing wall and arranged between the housing wall and a shaft. The sealing ring has sealing oil supply bores supplying sealing oil into a sealing gap formed between an inner wall surface of the sealing ring and an outer wall surface of the shaft. The inner wall surface has pocket-shaped recesses where the sealing oil supply bores open. The pocket-shaped recesses extend in the circumferential direction of the sealing ring. The inner wall of the sealing ring has at least one circumferential boundary stay that delimits and seals the pocket-shaped recesses in an axial direction of the sealing ring toward the first or second housing side. The inner wall surface of the sealing ring has a circumferential groove that connects the pocket-shaped recesses to one another.

Abstract: In a method for detecting defects in sheet metal segments of electric generators and motors, wherein between the sheet metal pieces of the sheet metal segment an electric insulating layer is arranged, respectively, and wherein between the sheet metal segments a cooling channel is provided, respectively, magnetic induction is generated within the sheet metal segments by applying externally a magnetic field and the temperature of the heat generated within the sheet metal segment is measured in the cooling channel.

Abstract: In a method for detecting defects in sheet metal segments of electric generators and motors, wherein between the sheet metal pieces of the sheet metal segment an electric insulating layer is arranged, respectively, and wherein between the sheet metal segments a cooling channel is provided, respectively, magnetic induction is generated within the sheet metal segments by applying externally a magnetic field and the temperature of the heat generated within the sheet metal segment is measured in the cooling channel.

Abstract: In a method for repairing electric insulation layers between sheet metal pieces of sheet metal segments of electric generators or motors, wherein between two neighboring sheet metal pieces an electric insulation is arranged, two neighboring sheet metal pieces are spread apart by introducing a tool for generating a permanent channel-shaped intermediate space between the two neighboring sheet metal pieces. Into the intermediate space, a curable, electrically insulating insulation material as an electric insulator is forced.

Abstract: In a method for monitoring mechanical wear caused by a first component on a second component, wherein the first and second components are movable relative to one another and wherein the first and second component are at least at times in mechanical contact with one another, at least one sensor head is arranged in a wear area to be monitored of the second component. The at least one sensor head is mechanically worn by the first component upon reaching a predetermined wear limit. When the at least one sensor head is mechanically worn, a measuring signal is generated by the at least one sensor head or a change of a measuring signal, produced by the at least one sensor head prior to having been mechanically worn, is detected.

Abstract: In a method for monitoring mechanical wear caused by a first component on a second component, wherein the first and second components are movable relative to one another and wherein the first and second component are at least at times in mechanical contact with one another, at least one sensor head is arranged in a wear area to be monitored of the second component. The at least one sensor head is mechanically worn by the first component upon reaching a predetermined wear limit. When the at least one sensor head is mechanically worn, a measuring signal is generated by the at least one sensor head or a change of a measuring signal, produced by the at least one sensor head prior to having been mechanically worn, is detected.