An electrical machine has a stator with a stator body supporting an electrical stator and a rotor. The rotor is supported by bearing including a radial bearing section forming a radial gas bearing and an axial bearing section forming an axial gas bearing, the stator side parts of these bearing sections being a stator side radial bearing part and a stator side axial bearing part that are rigidly connected to one another and together form a stator bearing structure. The stator side radial bearing part is a bushing, and is radially surrounded by a cooling body. The bushing is connected to the cooling body by an elastic support comprising a thermally conducting filler.

Various embodiments of the present technology generally relate to precise rotary motion control systems. More specifically, some embodiments relate to systems, methods, and means for providing pressure to a non-contact rotary system. In some embodiments, the rotary system comprises a rotary shaft that can rotate three hundred and sixty degrees continuously. In order for the rotary system to be entirely non-contact with any surfaces of surrounding components or housing, pressure must be supplied to a rotary air bearing that floats the rotary unit above a surface. In some examples, the bottom air bearing is a vacuum preloaded (VPL) air bearing. As such, the VPL air bearing requires a supply of positive pressure and a supply of negative pressure to stabilize the rotary unit. The present technology provides a mechanism for providing pneumatic air to the air bearing without a physical connection to the rotary shaft or air bearing.

The present invention provides a magnetic-hydraulic double-suspension bearing experiment table. In the experiment table, four blind holes are uniformly processed on left and right side surfaces of the two radial stators for magnetic-hydraulic double-suspension bearing; four countersunk through holes are uniformly processed on left side surfaces of the left supporting part of the fixed bracket and the right supporting part of the fixed bracket, and the radial stators for magnetic-hydraulic double-suspension bearing are fixedly connected to the upper end of the left supporting part of the fixed bracket by countersunk screws. In addition, the two radial stators for magnetic-hydraulic double-suspension bearing are processed with stops to ensure that the two radial stators for magnetic-hydraulic double-suspension bearing are concentric with the left supporting part of the fixed bracket and the right supporting part of the fixed bracket.

A bearing includes a thrust gas bearing attached to a journal bearing and two or more converging-diverging orifices defined in a surface of at least one of the thrust gas bearing and the journal bearing. The converging-diverging orifices supply at least one pressurized gas to an interior of the bearing. Hydrodynamic lifting grooves are provided on the faces of the thrust gas bearing and the journal bearing and provide improved load capacity and sealing capabilities. Control over the ratios of the pressurized gases provides for additional sealing capabilities and reduced leakage. A metal mesh damper provides increased damping of the gas bearing.

A bearing assembly may include a first bearing ring, a second bearing ring, and at least one row of rolling elements having a plurality of rolling elements that are disposed so as to be capable of rolling on a first raceway of the first bearing ring and on a second raceway of the second bearing ring. At least one hydrostatically supported first sliding bearing segment may be disposed on the first bearing ring. Further, the hydrostatically supported first sliding bearing segment may interact with a first bearing face that is disposed on the second bearing ring. The hydrostatically supported first sliding bearing segment may be mounted so as to be movable in a movement direction that is perpendicular to the first bearing face.

A heating, ventilation, air conditioning, and refrigeration (HVACR) system includes a compressor with a gas bearing supplied with compressed gas and a controller. The controller is configured to determine an inlet pressure and outlet pressure of the gas bearing, determine a maximum speed limit based on the inlet pressure and the outlet pressure, and prevent the compressor from operating at a speed that is greater than the maximum speed limit. A method of controlling a compressor includes calculating a maximum speed limit based on an inlet pressure and an outlet pressure of the gas bearing. The method also includes in response to determining that a speed setting is greater than the maximum speed limit, adjusting operation of the compressor such that a speed of the compressor is at or below the maximum speed limit.

A hydrostatic bearing spindle device includes: a spindle includes tapered portion having tapered radial receiving surface and flange having first thrust receiving surface and second thrust receiving surface formed at rear side from first thrust receiving surface; first thrust bearing has first thrust bearing surface facing first thrust receiving surface; second thrust bearing has second thrust bearing surface facing second thrust receiving surface; radial bearing facing tapered radial receiving surface; rotation regulator regulates relative rotation of one of first thrust bearing and second thrust bearing with respect to the other; and housing has first screw groove which is screwed with first thrust bearing and second screw groove which is screwed with second thrust bearing. Second screw groove has larger screw pitch than first screw groove does when tapered portion expands rearward, and first screw groove has larger screw pitch than second screw groove does when tapered portion expands frontward.

Flywheel for energy storage, comprising a rotor, a housing enclosure, means for charging energy by transferring electric energy to stored kinetic energy in the rotating rotor and means for discharging energy by transferring stored kinetic energy in the rotating rotor to electric energy, distinctive in that the rotor is vertically oriented, the rotor has mass of over 5000 kg, the rotor comprises a central vertical shaft, a radial bearing is arranged to an upper end of the vertical shaft, an axial-radial hydraulic bearing, or separate axial and radial bearings, is arranged to a lower end of the vertical shaft.

An expansion turbine configured such that even when pressure of process gas steeply changes, the amount of process gas leaking from a gap between an impeller and a cover is made small. The expansion turbine includes a gas supply passage which is connected to any one of a gas supply passage and a gas discharge passage and through which gas is supplied to a region located between a rotor member and a casing member.

A hydrostatic bearing spindle device includes: a spindle includes tapered portion having tapered radial receiving surface and flange having first thrust receiving surface and second thrust receiving surface formed at rear side from first thrust receiving surface; first thrust bearing has first thrust bearing surface facing first thrust receiving surface; second thrust bearing has second thrust bearing surface facing second thrust receiving surface; radial bearing facing tapered radial receiving surface; rotation regulator regulates relative rotation of one of first thrust bearing and second thrust bearing with respect to the other; and housing has first screw groove which is screwed with first thrust bearing and second screw groove which is screwed with second thrust bearing. Second screw groove has larger screw pitch than first screw groove does when tapered portion expands rearward, and first screw groove has larger screw pitch than second screw groove does when tapered portion expands frontward.