A centrifugal compressor includes a shaft defining an axis, an impeller mounted to the shaft for rotation about the axis, and a diffuser section including a first wall, a second wall, and an opening defined between the first wall and the second wall. The opening of the diffuser section is arranged in fluid communication with the impeller. The first wall is rotatable about the axis and rotation of the first wall about the axis is mechanically driven.

A rotor bearing of a wind turbine, in particular a rotor bearing having an improved and simplified axial introduction of force into the inner ring. It is specified for this purpose that the inner ring of the rolling bearing has a greater axial length with respect to the axial length of the outer ring of the rolling bearing by a section of the inner ring that corresponds to the axial length of the outer ring and has the length being adjoined by additional sections, wherein the axial lengths of these sections differ in size.

A bearing support arrangement for a wind turbine includes a support structure and a bearing housing. The bearing housing is arranged within the support structure. The arrangement further includes a bearing radially supported by the bearing housing. A rotor shaft is radially supported by the bearing and a removable wedge is arranged between the support structure and the bearing housing to clamp the bearing between the rotor shaft and the bearing housing. A method for mounting the bearing support arrangement for a wind turbine is also disclosed as is a wind turbine incorporating the bearing support arrangement.

A method for manufacturing a pitch bearing or a yaw bearing for a wind turbine includes forming an outer race of the bearing of a base material. The method also includes forming an inner race of the bearing of the base material. Further, one of the inner race or the outer race defines a circumferential surface comprising a plurality of gear teeth. The method further includes arranging the inner race within the outer race. In addition, the method includes providing a plurality of roller elements between the outer and inner races. Moreover, the method includes applying a coating material to at least a portion of the plurality of gear teeth via an additive manufacturing process. The coating material is different than the base material. As such, the coating material provides at least one of increased hardness, strength, or durability to the base material.

A scroll compressor includes a balancer that rotates integrally with a rotary shaft. A bushing includes a cylindrical portion and an auxiliary weight portion. The auxiliary weight portion is arranged on the outer side of the cylindrical portion. The fitting hole is provided at a position where a moment about the eccentric shaft generated by a centrifugal force acting on the movable scroll due to rotation of the rotary shaft and a moment about the eccentric shaft generated by a centrifugal force acting on the auxiliary weight portion due to rotation of the rotary shaft are in the opposite directions. As viewed in the axial direction of the rotary shaft, the center of gravity of the bushing is located on the same side of a straight line including the center of the cylindrical portion and the center of the rotary shaft as the center of the eccentric shaft.

The invention relates to a sliding bearing (9) comprising: an inner ring element (13); an outer ring element (14); at least one sliding bearing element (15), which is arranged between the inner ring element (13) and the outer ring element (14).

The sliding bearing element (15) has multiple sliding bearing pads (20), wherein the individual sliding bearing pads (20) each have a bearing surface (26), which is designed in the shape of a spherical cap.

A bearing system is configured to surround a rotor along a circumferential direction corresponding to the rotor. The rotor is extended along an axial direction co-directional to a centerline axis of the rotor. The bearing system includes a body from which a plurality of first support members is each extended, and wherein the plurality of first support members is spaced apart from one another along the circumferential direction. Each first support member includes a first axial support arm extended along the axial direction and a first radial support arm extended from the first axial support arm along a radial direction. The first radial support arm is configured to position a bearing element in contact with a bearing surface at the rotor.

This invention aims to provide the composition of inlet so that the strong output may be provided by rotating with the state of high efficiency as the water falling energy and the flow pressure are simultaneously provided to the impeller and to provide impeller assembly for hydroelectric power generation device maximizing the output efficiency by improving the composition of impeller positively. Namely, this invention inserts the impeller in the main body of cylinder shape that the closed inner space is formed by the cover member, the driving shaft shall be supported in the bearing coupled to the cover member, the impeller installed in the inner space shall be driven by forming the inlet and the outlet in the main body in the impeller assembly for a hydroelectric power generation device; the abovementioned inlet, the fluid like the involute curve shall be supplied from the 12 o'clock direction to the 4 o'clock direction of the main body, the outlet is formed from 6 o'clock direction to 8 o'clock direction, the abovementioned impeller forms the plural fluid tanks opened toward the inner surface of the main body, the moment of rotation of the impeller shall be increased by forming the abovementioned fluid tank in the closed pressuring part is formed in the direction of 4 o'clock direction to 6 o'clock direction.

A pitch bearing for coupling a rotor blade to a hub of a wind turbine includes an outer race mountable to the hub and an inner race rotatable relative to the outer race and mountable to the rotor blade. The inner race is formed by first and second ring components, each of the first and second ring components having an outer annular face and an inner annular face. The first and second ring components are joined together at the inner annular faces such that the inner annular faces are opposed and opposite each other. A layer of friction enhancing material is inserted/disposed between the opposed inner annular faces, the friction enhancing material including an abrasive particulate component that increases a coefficient of friction to minimize slippage between the first and second ring components.

A bearing housing is configured as an end-side cover for a nacelle of a fluid-flow power plant and includes a cylindrical section having an interior and a bearing unit in the interior. The bearing unit includes at least one rolling-element bearing having an inner ring and an outer ring rotatably disposed with respect to each other about a bearing rotational axis and a plurality of rolling elements between the rings. A pressure line of the bearing intersects the bearing rotational axis at a first angle. An angled section of the housing extends from the cylindrical section of the housing at a second angle that is related to, and preferably substantially equal to, the first angle.