Abstract: A planetary stage includes a planetary carrier, at least one pitch tube, and at least one fixing element. The pitch tube is arranged coaxially to a rotation axis of the planetary stage. The pitch tube extends through a wall of the planetary carrier. The fixing element is fixed in the wall. The pitch tube has a groove. The fixing element engages in at least one part of the groove, wherein the at least one part of the groove extends orthogonally to the rotation axis. A plate is fixed in the wall, and the fixing element engages in a clearance between the wall and the plate and is fixed positively between the wall and the plate.

Abstract: A planetary stage includes a planetary carrier, at least one pitch tube, and at least one fixing element. The pitch tube is arranged coaxially to a rotation axis of the planetary stage. The pitch tube extends through a wall of the planetary carrier. The fixing element is fixed in the wall. The pitch tube has a groove. The fixing element engages in at least one part of the groove, wherein the at least one part of the groove extends orthogonally to the rotation axis. A plate is fixed in the wall, and the fixing element engages in a clearance between the wall and the plate and is fixed positively between the wall and the plate.

Abstract: The invention relates to an arrangement, comprising a first oil line (121, 123), a second oil line (105), a third oil line (107), and a cavity (103, 111); wherein the first oil line (121, 123), the second oil line (105), and the third oil line each have a mouth into the cavity (103, 111). The arrangement comprises a plate (113) having a continuous first hole (115) and a continuous second hole (117), wherein the plate (113) is arranged in the cavity (103, 111) in such a way that the plate covers the mouths of the second oil line (105) and the third oil line (107).

Abstract: A method for connecting a low speed main shaft of a wind turbine to an input shaft of a transmission gearbox of the wind turbine is disclosed. The method includes providing a connection surface on the main shaft and a corresponding connection surface on the input shaft, placing a friction enhancing means on at least one of the connection surfaces, and firmly connecting both connection surfaces to one another, a permanent load being applied on the connection surfaces.

Abstract: A gear unit for a wind turbine having an input shaft connected to the rotor hub of the wind turbine and an output shaft for connection to an electrical power generator, characterized in that the gear unit is provided with a hollow tube which is concentric with the main rotation axis and which extends through the gear unit from the input shaft to the output shaft, whereby this hollow tube provides a sealing for the gear unit in storage and transport.

Abstract: Method for connecting a low speed main shaft of a wind turbine to an input shaft of a transmission gearbox of the wind turbine, characterized in that the method consists of providing a connection surface on the main shaft and a corresponding connection surface on the input shaft; placing a friction enhancing means on at least one of said connection surfaces; and firmly connecting both connection surfaces to one another whereby a permanent load on the connection surfaces is applied.

Abstract: A gear unit for a wind turbine having an input shaft connected to the rotor hub of the wind turbine and an output shaft for connection to an electrical power generator, characterized in that the gear unit is provided with a hollow tube which is concentric with the main rotation axis and which extends through the gear unit from the input shaft to the output shaft, whereby this hollow tube provides a sealing for the gear unit in storage and transport.