Abstract: A grinder includes a grinding table rotatable about a first rotational axis and at least two grinding rollers. Each of the at least two grinding rollers is arranged for rotation about a second rotational axis such that ground material can be comminuted between the grinding table and the grinding rollers during operation. A sensor arrangement can detect a change in inclination of the grinding table beyond a given threshold value.

Abstract: A testing device includes a drive unit and an output unit, which are connected together via first and second gearboxes. The testing device is configured to adjustably tilt and/or adjustably displace at least one of the first and second gearboxes for at least partially simultaneous testing of the first and second gearboxes.

Abstract: A gear unit includes a toothed wheel, a reservoir receiving lubricant for lubricating the toothed wheel, a displacement body configured to set a lubricant level in the reservoir, and an actuator configured to move the displacement body as a function of a temperature as the displacement body is wetted with the lubricant.

Abstract: The invention relates to a transmission (10), preferably a bevel helical transmission, having a transmission housing (1) and having a drive shaft (2.1), on which a fan (9) is mounted, and comprising a ring cooler (4), which surrounds the drive shaft (2.1), oil lines (7.1, 7.2) for transporting transmission oil in an oil circuit from the interior of the transmission housing (1) to the ring cooler (4) and from the ring cooler (4) into the interior of the transmission housing (1), and an air-guiding hood (3.1, 3.2) surrounding the ring cooler (4) for guiding air suctioned by the fan (9) onto the ring cooler (4).

Abstract: A planetary gearbox for a wind power installation includes a planetary carrier having a first and second carrier cheeks, planetary gears mounted rotatably on the first and second carrier cheeks via bearing pins, respectively, an internal gear meshing with the planetary gears, with an assembly clearance being configured between a cheek external diameter of the first and second carrier cheeks and an internal diameter of the internal gear, and a planetary carrier spider configured to position the first and second carrier cheeks at a defined spacing with respect to one another. The planetary carrier spider has a radially outwardly pointing outer side which extends at a greater spaced-apart relation radially inward from a radially inner tip circle radius of an internal toothing system of the internal gear than the first and second carrier cheeks and which is arranged radially outside with respect to an internal diameter of the planetary gears.

Abstract: In a process for additive manufacturing of a machine component, a hardening agent is added to a base material of a material layer in locally adjustable fashion, and the material layer is irradiated with a laser to effect local melting of the material layer such that the hardening agent is at least embedded in the base material as the material layer is irradiated with the laser.

Abstract: A rotor for a rotating electric machine includes a rotor winding arranged for conjoint rotation on a rotor shaft, and a slip ring body arranged on an axial end of the rotor shaft and having an end face on an axial end of the slip ring body opposite to the rotor winding. The slip ring body includes connection adapters which project axially beyond the end face of the slip ring body for connection of line ends of the rotor winding. A driver unit for a rotary encoder is fastened to the end face of the slip ring body and/or to the axial end of the rotor shaft and electrically insulated from the connection adapters. A centrifugal force support ring is arranged on the end face of the slip ring body such that the connection adapters and the driver unit are arranged in a through-opening of the centrifugal force support ring.

Abstract: A planetary gearing includes at least a first planetary stage and a second planetary stage and a double-walled pipe. The double-walled pipe has an inner pipe and an outer pipe and is provided with an outlet point in a central section. A bushing is arranged on the outlet point.

Abstract: A series of planetary gearboxes includes a plurality of subseries of planetary gearboxes. Each of the plurality of subseries includes a planetary gear carrier of a planetary stage, at least two rolling bearings, and a planetary gear mounted on the at least two rolling bearings. The at least two rolling bearings in a first one of the first plurality of subseries have a first bearing width and in a second one of the first plurality of subseries having a second bearing width.

Abstract: A shaft includes a bushing for a current conductor, and a holder for positioning the current conductor. The holder secures the current conductor in or over an inflection point of a curve of the current conductor.

Abstract: A plain shaft bearing, in particular of a shaft of a wind turbine gearbox, includes a sliding surface having a surface roughness. The sliding surface is further provided with a structure formed from depressions defined by a depth which is greater than the surface roughness and less than 80 ?m.

Abstract: A slip ring body for electrically contacting an asynchronous machine includes first and second slip rings rigidly connected to one another, with at least two conductor bars fastened to each of the slip rings. At least one of the slip rings has a recess for passage of the conductor bars of the other slip ring and defining around the recess a first region in which air is at least partially present and which has a magnetic conductivity that is lower than a magnetic conductivity in a second region in which the conductor bars to the one slip ring are fastened, or which second region is embodied for contacting with an energy-transmitting brush. The first and second regions are not made of copper. The recess defines an opening cross-sectional area which is greater than a cross-sectional area of the conductor bars fastened to the one slip ring.

Abstract: A slip ring bridge, in particular for use in a wind power installation, includes at least two segments configured to provide electrical power, and an insulation element configured to insulate the segments to maintain the segments in spaced-apart relationship. The insulation element includes a shield arranged inside the insulation element and connected to a constant electric potential.

Abstract: A clutch includes a first clutch half, a second clutch half, a first magnet arranged on the first clutch half, and a second magnet arranged on the second clutch half. The first and second magnets interact to enable a contactless detection of a state of wear of the clutch.

Abstract: In a method for predicting damage to a roller bearing, a plurality of physical variables of at least one component of the roller bearing is acquired. From the physical variables and from type information of the roller bearing at least a first influencing variable and a second influencing variable are established and based on the at least first and second influencing variables a damage contribution to damage to the roller bearing caused by a White Etching Crack (WEC) mechanism is established and the damage contribution is added to form a damage sum. A remaining service life of the at least one component of the roller bearing due to the damage caused by the WEC mechanism from the damage sum and a first damage accumulation model is then established.

Abstract: A rotor for a rotating electric machine includes a rotor winding arranged for conjoint rotation on a rotor shaft, and a slip ring body arranged on an axial end of the rotor shaft and having an end face on an axial end of the slip ring body opposite to the rotor winding. The slip ring body includes connection adapters which project axially beyond the end face of the slip ring body for connection of line ends of the rotor winding. A driver unit for a rotary encoder is fastened to the end face of the slip ring body and/or to the axial end of the rotor shaft and electrically insulated from the connection adapters. A centrifugal force support ring is arranged on the end face of the slip ring body such that the connection adapters and the driver unit are arranged in a through-opening of the centrifugal force support ring.

Abstract: A method for producing a tooth geometry includes selecting a root-side starting contour configured as an ellipse segment and a head-side partial contour of a tooth; selecting an adaptation region for at least a part of the root-side starting contour; determining for the adaptation region a correction specification determined using a correction function configured as an at least third-order polynomial having at least one adjustable function parameter comprising adjustable coefficients; modifying the root-side starting contour using the correction specification to form a root-side final contour, and producing the tooth geometry by chip-removing machining based on the head-side partial contour and the root-side final contour. Also disclosed are a computer program product for carrying out the method, a tool for manufacturing the tooth geometry based on the method, and a machine component having the tooth geometry.

Abstract: A slip ring system of an electrically excited dynamoelectric machine can be designed to be closed or open and includes a carrier segment configured to include a brush holder which includes a brush pocket for receiving a brush. The brush holder includes means for cooling the brush in the brush holder and/or for cooling the brush holder and has a surface-enlarging structure so as to enable a cooling air flow to be guided within the slip ring system and thereby cool the brush holder and/or brush pocket.

Abstract: A slip ring includes an essentially cylindrical contact region defined by a radius and having a contact region which faces in a radially outwards direction. The contact region has a recess in a region of the contact surface, with the recess configured to have a projection extending on an inner side of the recess and/or being interrupted in a tangential direction. The contact region has an annular surface formed with an opening which communicates with the recess and extends towards an axial direction at an incline at an interval of 5 degrees to 45 degrees with respect to a normal of the annular surface. At least two insulating regions are arranged axially adjacent to the contact region and each being defined by a radius, with the radius of the contact region being larger than the radius of the insulating region.