A bearing preload apparatus may include a gearbox assembly, a coupling assembly, and a sensor assembly. The gearbox assembly may include a gearbox housing, a first shaft and a second shaft. The first and second shafts may extend out of the housing and may be rotatable simultaneously with each other at different speeds. The coupling assembly may include a first driver coupling connected to the first shaft and a second driver coupling connected to the second shaft. The sensor assembly may be mounted to a stationary structure and the gearbox housing. The sensor assembly may measure a reaction torque of the gearbox assembly relative to the stationary structure.

A bearing package is provided which includes a rolling bearing, a first packaging member wrapped around the rolling bearing over the entire circumference thereof, a first annular elastic member, and a second annular elastic member. The first elastic member and the second elastic member are disposed on both axial sides of at least one row of rolling elements. The first elastic member and the second elastic member are pushed by the first packaging member so as to restrict axial movement of the at least one row of rolling elements.

An assembly tool (104) for positioning the rolling elements (150, 155) of a bearing assembly (100) during a preloading operation includes a roller seating actuator (400) configured to be removably coupled to a portion of the bearing assembly during the preloading operation, and a roller seating ring (420) movably coupled to the roller seating actuator. The roller seating ring includes a distal end (440) configured to engage an end of a rolling element of the bearing assembly. A biasing member (460) is positioned between the roller seating actuator and the roller seating ring and biases the roller seating ring away from roller seating actuator such that the distal end of the roller seating ring engages and presses the rolling element axially into engagement with a rib (145) of a race of the bearing assembly.

A bearing preload apparatus may include a gearbox assembly, a coupling assembly, and a sensor assembly. The gearbox assembly may include a gearbox housing, a first shaft and a second shaft. The first and second shafts may extend out of the housing and may be rotatable simultaneously with each other at different speeds. The coupling assembly may include a first driver coupling connected to the first shaft and a second driver coupling connected to the second shaft. The sensor assembly may be mounted to a stationary structure and the gearbox housing. The sensor assembly may measure a reaction torque of the gearbox assembly relative to the stationary structure.

A tapered roller bearing includes inner and outer rings including raceway surfaces having tapered shapes on their outer and inner peripheries, respectively, tapered rollers between the raceway surfaces, and a retainer configured to receive the tapered rollers. At least the raceway surface of the inner ring includes cut crowning of a complex curve including a center curve and end portion curves formed on both sides of the center curve each have a curvature radius smaller than a curvature radius of the center curve. The tapered rollers each have a rolling surface including a straight portion and logarithmic crowning portions formed on both sides of the straight portion. When the raceway surface of the inner ring has an effective raceway surface width represented by LG, and the straight portion of the rolling surface of the tapered roller has a width represented by LW1, 0.7LW1/LG<0.95 is satisfied.

A pitch bearing for coupling a rotor blade to a hub of a wind turbine includes an outer race configured to be coupled to the hub, an inner race rotatable relative to the outer race and configured to be coupled to the rotor blade, and a first plurality of line contact rolling elements. The outer race defines a first outer raceway wall and the inner race defines a first inner raceway wall. The first plurality of line contact rolling elements is disposed between the first inner and outer raceway walls. Each of the plurality of line contact rolling elements defines a predetermined contact angle. The predetermined contact angle is defined as an angle between a reference line extending perpendicular to a longitudinal axis of one of the plurality of line contact rolling elements and a reference line extending parallel to a horizontal plane of the pitch bearing. Further, the predetermined contact angle includes angles between 0 degrees () and 90.

A bearing seal assembly includes at least one seal unit and at least one pulse wheel attached to the seal unit in an interference-fit and/or a materially bonded manner. The seal unit may include a radially outer member surrounding a radially inner member, the radially inner member may have a cylindrical seal surface and a flange projecting radially outwardly from an end of the seal surface and the radially outer member may have a metal profile element at least partially covered by an elastomer body that defines a first seal lip that directly contacts the cylindrical seal surface of the radially inner member. The pulse wheel may be attached to the radially outer member by a radially inwardly directed flange of the metal profile element overlying a radially outer edge of the pulse wheel.

A bearing seal includes at least one first metal-plate element having an attachment region for attaching the first metal-plate element to a bearing inner ring, at least one seal element attached to the first metal-plate element, and at least one spring element configured to press at least one region of the seal element in a radially outward direction. Also a wheel bearing assembly including the bearing seal.

A system for providing a load on a bearing mounted to a shaft includes an attaching member releasably connectable to the shaft and a press mechanism in fluid communication with a source of fluid and configured to provide a compressive load to the bearing. The press mechanism includes a switch having a base and a piston in communication with the fluid such that an increase in a pressure of the fluid results in the piston extending upwardly from the base and a decrease in the pressure of the fluid results in the piston retracting toward the base. The switch includes a lower proximity sensor and a higher proximity sensor. The piston is configured to extend upwardly from the base past the lower proximity sensor and to trip the higher proximity sensor. The switch is configured to control the increase in the pressure in response to the piston tripping the higher proximity sensor.

A system for providing a load on a bearing mounted to a shaft includes an attaching member releasably connectable to the shaft and a press mechanism in fluid communication with a source of fluid and configured to provide a compressive load to the bearing. The press mechanism includes a switch having a base and a piston in communication with the fluid such that an increase in a pressure of the fluid results in the piston extending upwardly from the base and a decrease in the pressure of the fluid results in the piston retracting toward the base. The switch includes a lower proximity sensor and a higher proximity sensor. The piston is configured to extend upwardly from the base past the lower proximity sensor and to trip the higher proximity sensor. The switch is configured to control the increase in the pressure in response to the piston tripping the higher proximity sensor.