A rolling bearing, in particular a center-free large rolling bearing, having two concentric ball races with one ball race comprising a groove open toward the other ball race and the other ball race comprising a scraper ring engaging into the groove, wherein the scraper ring is supported at the groove in the axial direction of the rolling bearing by at least two axial bearings arranged at oppositely disposed scraper ring front sides and wherein the scraper ring is supported in the radial direction by at least one radial bearing which is arranged on a scraper ring jacket surface. The scraper ring is supported in the axial direction at the groove by a third axial bearing, wherein two axial bearings are arranged at the same side of the scraper ring at separate raceways offset from one another in the axial direction of the rolling bearing.

The invention is directed to a wind power plant having a rotor mounted rotatably about an axis directed approximately in the wind direction, and having at least two mutually concentric annular elements for connection to oppositely rotatable system components of the wind power plant, one of which comprises means for connection to the rotor of the wind power plant or to a drive shaft of a gearbox coupled thereto; at least one element having a freewheel characteristic is disposed between the two connection elements and together with them forms a freewheel, at least one connection element being provided with at least one integrated raceway for a row of rolling bodies rolling thereon.

The invention is directed to a wind power plant having a rotor mounted rotatably about an axis directed approximately in the wind direction, and having at least two mutually concentric annular elements for connection to oppositely rotatable system components of the wind power plant, one of which comprises means for connection to the rotor of the wind power plant or to a drive shaft of a gearbox coupled thereto; at least one element having a freewheel characteristic is disposed between the two connection elements and together with them forms a freewheel, at least one connection element being provided with at least one integrated raceway for a row of rolling bodies rolling thereon.

A tandem roller bearing assembly is provided that combines a tapered roller bearing with an angular contact ball bearing, yielding high load capacity with improved efficiency. A one-piece outer ring contains an outer tapered roller raceway and an outer angular contact ball raceway and can support an axial load in a single direction. A one-piece inner ring contains an inner tapered roller raceway and an inner angular contact ball raceway and can support an axial load in a single direction. Various rib configurations are implemented on the inner tapered roller raceway to achieve multiple friction and axial load support options.

A hybrid module includes a first component, a second component, a first bearing, and a retainer. The first component has a pilot surface and a threaded portion, and the second component has a shaft and a tool. The tool has a first drive profile. The first bearing is installed on the pilot surface and the retainer is threaded onto the threaded portion. The retainer has a second drive profile, complementary to the first drive profile. A second bearing may be installed between the first component and the shaft, and a retaining ring may be installed in the shaft or the first component to prevent axial displacement of the shaft relative to the first component. The retainer may be disposed on a first axial side of the first bearing, and the second bearing may be disposed on a second axial side of the first bearing, opposite the first axial side.

A drivetrain system includes a first drive gear driven by a first motor and a second drive gear driven by a second motor. The first drive gear and the second drive gear are arranged along the axis. The first drive gear includes a first extension and the second drive gear includes a second extension arranged radially within and axially overlapping the first extension. The drivetrain system includes a system of bearings arranged between the first drive gear and the second drive gear, either drive gear and a stationary component, or a combination thereof. In some embodiments, the drivetrain system includes a clutch assembly arranged between the first drive gear and the second drive gear that interfaces to the first drive gear and to the second drive gear. The clutch assembly allows the drive gears to be locked or otherwise engaged to improve torque transfer.

A wheel bearing unit includes a first inner ring having an axial end side, a second inner ring having an axial end side contacting the axial end side of the first inner ring at a joint, and a seal unit that seals the joint between the first inner ring and the second inner ring. The seal unit includes at least one seal element and at least one further component that exerts pressure on the at least one seal element, and the at least one further component is at least partially comprised of sheet metal.

An interdigitated turbine assembly for a gas turbine engine, the interdigitated turbine assembly including a first turbine rotor assembly interdigitated with a second turbine rotor assembly. A first static frame is positioned forward of the first turbine rotor assembly and the second turbine rotor assembly. The first turbine rotor assembly is operably coupled to an inner rotatable component of a gear assembly. The second turbine rotor assembly is operably coupled to an outer rotatable component of the gear assembly. The static structure is connected to the first static frame. A driveshaft is operably coupled to the outer rotatable component. A first bearing assembly is operably coupled to the driveshaft and the first static frame. A second bearing assembly is operably coupled to the first static frame and first turbine rotor assembly. A third bearing assembly is operably coupled to the first turbine rotor assembly and the second turbine rotor assembly.

The invention relates to a rolling bearing, in particular a center-free large rolling bearing, comprising two concentric races, of which one race has a groove open toward the other race and the other race has a lug ring, which engages in said groove, the lug ring being supported on the groove by means of at least two thrust bearings and at least one radial bearing, said axial bearings being designed as roller bearings, all the radial bearings being designed as ball bearings.

A bearing assembly includes an outer element and an inner element and at least two rows of rolling elements supporting the inner element in the outer element for relative rotation. The outer element includes two surface regions for contact with the rolling elements, and the inner element includes two surface regions for contact with the rolling elements, and the rolling elements of at least one of the rows are rollers.