A bearing assembly for a turbine engine includes a first gas bearing configured to receive a load from a rotating shaft of the turbine engine, a transmission disk configured to receive the load from the first gas bearing, and a damping member coupled to a casing of a combustor section of the turbine engine. The transmission disk includes a gas delivery disk, which includes an axial opening configured to facilitate an axial flow through the gas delivery disk and a duct configured to facilitate a radial flow through the gas delivery disk to form the first gas bearing. The damping member is configured to receive the load from the transmission disk.

A magnetic gravity compensator comprises a stator (1), a rotor (2), a base (4) and an adjustment mechanism (6). The stator (1) is disposed on the base (4), and the rotor (2) is levitated with respect to the stator (1). The stator (1) comprises a central cylindrical magnet (11) that is fixed to the base (4) by the adjustment mechanism (6) and consists of at least two arc magnets (111). The adjustment mechanism (6) has a first end fixed to the base (4) and a second end securely connected to the at least two arc magnets (111). The adjustment mechanism (6) is configured to drive the at least two arc magnets (111) to synchronously move radially with respect to a central axis of the central cylindrical magnet (11) so as to change a magnetic circuit between the central cylindrical magnet (11) and the rotor (2), and thereby adjust a magnetic levitation force between the stator (1) and the rotor (2).

A processing machine includes: a static pressure bearing configured to support a drive shaft; a fluid feeder configured to output a fluid to be supplied to the static pressure bearing, in accordance with rotation of a servomotor; a sensor configured to detect a physical quantity of the fluid output from the fluid feeder; and a control unit configured to control the rotation speed of the servomotor according to the physical quantity of the fluid.

The amount of consumption of gas is reduced when the gas is expanded to be cooled by using a plurality of expansion turbines. A high-pressure expansion turbine includes: a gas supply passage through which bearing gas is supplied to a bearing portion; and a gas discharge passage through which the bearing gas which has been supplied from the gas supply passage to the bearing portion is discharged from the bearing portion. A low-pressure expansion turbine includes: a gas supply passage through which the bearing gas is supplied to a bearing portion; and a gas discharge passage through which the bearing gas which has been supplied from the gas supply passage to the bearing portion is discharged from the bearing portion. The bearing gas discharged from the gas discharge passage of the high-pressure expansion turbine is supplied to the gas supply passage of the low-pressure expansion turbine.

A linear electromagnetic machine includes a stator, a translator, and a bearing system. The bearing system maintains alignment against lateral displacement of the translator relative to the stator, as the translator reciprocates axially. More particularly, the bearing system maintains a motor air gap between the stator and a magnetic section of the translator. The stator includes a plurality of stator teeth and windings, which form a plurality of phases. The stator teeth and windings are arranged using a hoop stack with spines to form a stator bore and define the motor air gap. The bearing system can include bearing housings that are configured to form a bearing interface with a surface of the translator. The bearing interface can include a contact bearing or a non-contact bearing, such as a gas bearing. Current is controlled in the phases to convert between electrical energy and kinetic energy of the translator.

A fan blade assembly using air bearing features to reduce frictional losses, reduce physical wear and tear, and allow for faster acceleration of the fan blade within the assembly is disclosed. A fan blade housing incorporates inlets for pressurized air which create a pressurized area between the fan blade and the housing. The pressurized area functions as an air bearing interface and the fan blade is kept at a controlled distance from the fan blade housing as it spins. In an alternate embodiment, the fan blade assembly has pass-through inlets which use air pressure generated by the fan itself as it spins to provide the pressurized air for the pressurized area.

A parallel bearing includes a rotary shaft bearing and a stator bearing, wherein the rotary shaft bearing is a contact bearing, and the rotary shaft bearing is sleeved on a rotary shaft; and the stator bearing is a non-contact bearing, the stator bearing is sleeved on the rotary shaft bearing, and a clearance is provided between the stator bearing and the rotary shaft bearing. The parallel bearing is cost-effective, reduces the relative rotational speed of each stage of bearing, breaks through the limitation of the theoretical DN factor and has the low dependency on the lubricating oil. In the rotor system having the parallel bearing, rotational speeds of multiple parallel bearings on the same rotary shaft can be adaptively adjusted to achieve the synchronous rotation, and thus the rotor system has the desired stability in high-speed operation.

A supporting device including an installation assembly; a first supporting arm assembly having a longitudinal direction, a first end, and a second end; a switching bracket; a bearing unit pivotally connected to the switching bracket; and at least one gas spring is provided. The first end is pivotally connected to the installation assembly. The switching bracket is pivotally connected to the second end of the first supporting arm assembly. The gas spring is disposed in the first supporting arm assembly and is respectively connected to the switching bracket and the installation assembly to provide a supporting force. Each gas spring has a hollow tube, a piston rod, and a compression spring. The piston rod is slidably disposed through the hollow tube and has a head. The head may be varied between maximum and minimum protruding positions relative to the hollow tube. The compression spring is sleeved on the piston rod.

A high-precision air floating motion platform and method for wafer test, wherein the air floating motion platform includes: a base; a beam installed on the base; a sliding table configured to carry a wafer; a linear motor configured to drive the sliding table to slide along the beam; at least three sensors configured to detect a vertical straightness of the wafer; air bearings including a first air bearing, a second air bearing and a third air bearing; the air bearings being configured for suspension of the sliding table; and a compensation device configured to compensate the vertical straightness of the wafer based on a real-time data detected by the sensors.

An actuator comprising a linear electrical machine (LEM) having a stator with a stator bore and a translator axially movable within the stator bore and defining a magnetic circuit airgap therebetween, at least one fluid bearing journal formed on the translator, at least one fluid bearing providing a bearing gap adjacent the translator to allow the translator to move axially within the stator bore, a preload chamber for applying a preload force to the translator, wherein the preload chamber is defined by a side wall, a first end wall and a second end wall at least part of which is movable with the translator, and wherein the bearing gap and the magnetic circuit airgap are coaxial.