Abstract: A rotor bearing having a rolling bearing raceway in an unhardened core region of a rolling bearing ring element that further includes an outer layer hardened to a surface hardening depth wherein the rolling bearing raceway is formed by a roll, wherein a diameter of the roll is 8 to 25 times the surface hardening depth.

Abstract: A method for increasing load capacity of a surface-hardened rolling bearing raceway of a rolling bearing ring element may involve providing a rolling bearing ring element with an unhardened core region and, at least in certain portions, an outer layer hardened to a surface hardening depth. A rolling bearing raceway may be formed in a region of the hardened outer layer. The method may further involve hard rolling the rolling bearing raceway with a roll. The diameter of the roll is 8 to 25 times the surface hardening depth. A surface pressure prevailing in a rolling contact between the roll and the rolling bearing raceway during the hard rolling is between 2000 MPa and 3300 MPa. The method further involves machining the rolling bearing raceway after the hard rolling.

Abstract: A rolling bearing may have at least two bearing rings arranged rotatably relative to each other, at least one row of rolling elements arranged such that they can roll between the bearing rings, and a position-determining device for determining an absolute angular position of the bearing rings relative to each other. The position-determining device includes field patterns that are arranged on a surface of a first of the bearing rings and distributed around a circumference thereof, with fields of the field patterns having field heights with discrete values. The position-determining device also includes at least one eddy current sensor that is provided on a second of the bearing rings to scan the field patterns. An evaluation device may be configured to assign an associated angular position signal, which describes the absolute angular position of the first and second bearing rings relative to each other, to a scan of each field pattern.

Abstract: A method for increasing load capacity of a surface-hardened rolling bearing raceway of a rolling bearing ring element may involve providing a rolling bearing ring element with an unhardened core region and, at least in certain portions, an outer layer hardened to a surface hardening depth. A rolling bearing raceway may be formed in a region of the hardened outer layer. The method may further involve hard rolling the rolling bearing raceway with a roll. The diameter of the roll is 8 to 25 times the surface hardening depth. A surface pressure prevailing in a rolling contact between the roll and the rolling bearing raceway during the hard rolling is between 2000 MPa and 3300 MPa. The method further involves machining the rolling bearing raceway after the hard rolling.

Abstract: A wind turbine may include a rotor hub, a blade bearing, a rotor blade, and a conical rotor-hub extension disposed between the rotor hub and the blade bearing. The conical rotor-hub extension may have a first diameter on a first side that is directed toward the blade bearing and a second diameter on a second side that is directed toward the rotor hub. The first diameter may be greater than the second diameter, and the rotor blade may be connected to the blade bearing directly or indirectly. The blade bearing may comprise a first blade-bearing ring and a second blade-bearing ring, with the first blade-bearing ring being connected to the conical rotor-hub extension in a form-fitting manner, in a form- and force-fitting manner, or in a form configured as part of the conical rotor-hub extension.

Abstract: A bearing arrangement may be employed in a rotor shaft of a wind turbine. The rotor shaft may transfer rotation of a hub with rotor blades to a generator. The bearing arrangement may include a hub-side rolling bearing and a generator-side rolling bearing. The hub-side rolling bearing may be configured as a radial roller bearing. The generator-side rolling bearing may be configured as a three-row roller rotary connection. The hub-side rolling bearing may include a closed cage with windows for guiding rolling elements. Rows of the closed cage may be separated by a central web. Further, at least one of the generator-side rolling bearing or the hub-side rolling bearing may comprise inductively hardened raceways.

Abstract: A wind turbine may include a rotor hub, a blade bearing, a rotor blade, and a conical rotor-hub extension disposed between the rotor hub and the blade bearing. The conical rotor-hub extension may have a first diameter on a first side that is directed toward the blade bearing and a second diameter on a second side that is directed toward the rotor hub. The first diameter may be greater than the second diameter, and the rotor blade may be connected to the blade bearing directly or indirectly. The blade bearing may comprise a first blade-bearing ring and a second blade-bearing ring, with the first blade-bearing ring being connected to the conical rotor-hub extension in a form-fitting manner, in a form- and force-fitting manner, or in a form configured as part of the conical rotor-hub extension.

Abstract: A bearing arrangement may be employed in a rotor shaft of a wind turbine. The rotor shaft may transfer rotation of a hub with rotor blades to a generator. The bearing arrangement may include a hub-side rolling bearing and a generator-side rolling bearing. The hub-side rolling bearing may be configured as a radial roller bearing. The generator-side rolling bearing may be configured as a three-row roller rotary connection. The hub-side rolling bearing may include a closed cage with windows for guiding rolling elements. Rows of the closed cage may be separated by a central web. Further, at least one of the generator-side rolling bearing or the hub-side rolling bearing may comprise inductively hardened raceways.