A lubricant supported electric motor includes a stator presenting an stator raceway, and a rotor movable relative to the stator and presenting a rotor raceway disposed in spaced relationship with the stator raceway to define a gap therebetween. A lubricant is disposed in the gap for supporting the rotor relative to the stator. The stator defines at least one hydrostatic support chamber disposed in radially recessed relationship relative to the stator raceway and in fluid communication with the gap. The stator also defines a passageway disposed in fluid communication with the at least one hydrostatic support chamber for providing lubricant to the at least one hydrostatic support chamber and the gap. A flow restriction mechanism is disposed in fluid communication with the passageway for controlling and balancing a supply and pressure of the lubricant in the hydrostatic support chamber.

A lubricant supported electric motor includes a stator presenting an stator raceway, and a rotor movable relative to the stator and presenting a rotor raceway disposed in spaced relationship with the stator raceway to define a gap therebetween. A lubricant is disposed in the gap for supporting the rotor relative to the stator. The stator defines at least one hydrostatic support chamber disposed in radially recessed relationship relative to the stator raceway and in fluid communication with the gap. The stator also defines a passageway disposed in fluid communication with the at least one hydrostatic support chamber for providing lubricant to the at least one hydrostatic support chamber and the gap. A flow restriction mechanism is disposed in fluid communication with the passageway for controlling and balancing a supply and pressure of the lubricant in the hydrostatic support chamber.

A gear device with at least one rotating structural component, with a further structural component that delimits at least one supply area and with at least one consumption point that is to be supplied with hydraulic fluid via the supply area. Hydraulic fluid from at least one hydraulic fluid supply device can be introduced into the at least supply area via at least one supply opening, and can be discharged via at least one outlet opening from the at least one supply area for supplying the at least one consumption point. Inside the supply area, at least one pumping appliance driven by the structural component is provided for transporting hydraulic fluid from the at least one supply opening in the direction of the at least one outlet opening.

A method of priming a pump includes supplying lubricant, via a priming flow path, into an interface defined between a first part of a shaft of the pump and a second part of the shaft coaxially engaged with the first part of the shaft to define the pump, the first part of the shaft rotatable about a rotation axis relative to the second part of the shaft, and supplying lubricant into the interface via a lubrication flow path that is different from the priming flow path. A method of lubricating an aircraft motor of an aircraft engine, and a machine for an aircraft engine are also described.

A lubricant supported electric motor includes a stator presenting an outer raceway and a rotor extending along an axis and rotatably disposed within the stator to present an inner raceway disposed in spaced relationship with said the raceway to define a gap therebetween. A lubricant is disposed in the gap for supporting the rotor within the stator. At least one of the outer raceway or the inner raceway are profiled with a non-circular, cross-sectional shape for maintaining consistent support of the rotor over a wide range of operating speeds and dynamic situations encountered by the lubricant supported electric motor during operation.

A lubricant supported electric motor includes a stator presenting an outer raceway and a rotor extending along an axis and rotatably disposed within the stator to present an inner raceway disposed in spaced relationship with said the raceway to define a gap therebetween. A lubricant is disposed in the gap for supporting the rotor within the stator. At least one of the outer raceway or the inner raceway are profiled with a non-circular, cross-sectional shape for maintaining consistent support of the rotor over a wide range of operating speeds and dynamic situations encountered by the lubricant supported electric motor during operation.

An eccentric shaft assembly includes a first eccentric shaft including an interior surface forming a recess therein, an exterior surface, at least one first fluid inlet extending between the interior surface and the exterior surface, at least one first fluid outlet extending between the interior surface and the exterior surface. The eccentric shaft assembly further includes a second eccentric shaft disposed in the recess of the first eccentric shaft that includes a second bearing surface engaging the first bearing subassembly opposite the first bearing surface and at least one first fan blade for rotating about an axis of rotation to force a fluid to enter the recess through the first fluid inlet(s) and exit the recess through the first fluid outlet(s), to lubricate and/or cool a bearing subassembly disposed between the first eccentric shaft and the second eccentric shaft.

An eccentric shaft assembly includes a first eccentric shaft including an interior surface forming a recess therein, an exterior surface, at least one first fluid inlet extending between the interior surface and the exterior surface, at least one first fluid outlet extending between the interior surface and the exterior surface. The eccentric shaft assembly further includes a second eccentric shaft disposed in the recess of the first eccentric shaft that includes a second bearing surface engaging the first bearing subassembly opposite the first bearing surface and at least one first fan blade for rotating about an axis of rotation to force a fluid to enter the recess through the first fluid inlet(s) and exit the recess through the first fluid outlet(s), to lubricate and/or cool a bearing subassembly disposed between the first eccentric shaft and the second eccentric shaft.

The present invention belongs to the technological field of cooling compressors and, particularly, constructive details of lubricating oil pumps of cooling compressors. Problem to be solved: The current state of the art does not describe any solution of oil pump and construction of rotating shaft capable of achieving the correct lubricating of the moving components that include the compression functional unit of cooling compressor, which operating speed can vary between 700 and 4500 rpm. Solution of the problem: It is disclosed is a variable speed cooling compressor which tubular extension of the oil pump, the inner axial channel of the rotating shaft, the axial channel extension of the rotating shaft and the inner cam channel segment of the rotating axis are all fluidly connected to each other in order to conform a single integrated channel.

[Object] To efficiently supply lubricant oil to a bearing member with a simple mechanism. [Solving Means] A vacuum pump includes a first housing, a second housing, a rotor shaft, a lubricant oil-stirring plate, and a bearing member. The second housing is attached to the first housing and forms a space that stores lubricant oil together with the first housing. The rotor shaft passes through the first housing. The lubricant oil-stirring plate is housed in the space and is attached to the rotor shaft. The bearing member is fixed to the first housing and rotatably supports the rotor shaft. The first housing includes a supply port that enables lubricant oil to be supplied to the bearing member. The second housing includes an inner-wall upper portion which the lubricant oil stirred by the lubricant oil-stirring plate hits against. The inner-wall upper portion of the second housing includes a recess portion that enables the lubricant oil to move above the supply port.