A gas bearing for a compressor includes a bearing portion and a sealing portion mounted to a bearing housing of the compressor via one or more dampers, and the sealing portion being fixedly connected to the bearing portion, and a vent with an inlet in the bearing. The bearing portion has an inner radial surface for radially supporting a shaft of the compressor. The sealing portion has a sealing surface. The inlet of the vent disposed between the inner radial surface and the sealing surface. The sealing surface and a rotating surface form a path that extends along the sealing surface. The path extending from a pressurized volume of the compressor to the vent, and the pressurized volume containing a fluid.

A fluid machine includes a rotating body, an operation body rotated integrally with the rotating body, a housing, hydrodynamic plain bearings rotatably supporting the rotating body relative to the housing, and a cooling passage arranged in the housing. The hydrodynamic plain bearings each include a resin coating layer at a portion that is opposed to the rotating body. The hydrodynamic plain bearings include at least one combination of hydrodynamic plain bearings. Each combination includes an upstream hydrodynamic plain bearing and a downstream hydrodynamic plain bearing located at different positions in a direction in which the fluid flows through the cooling passage. The coating layer of the upstream hydrodynamic plain bearing has a lower hardness than the coating layer of the downstream hydrodynamic plain bearing.

A motor assembly includes a rolling bearing installed on a rotation shaft between an impeller and a rotor to support a first support of the rotation shaft, and a motor housing having a stator. The motor housing has a gas bearing bracket for accommodating a second support of the rotation shaft disposed at a side opposite to the first support with respect to the rotor. The motor assembly includes a gas bearing assembly in the gas bearing bracket to support rotation of the second support of the rotation shaft. The gas bearing assembly includes a gas bearing for surrounding the second support. The gas bearing is spaced apart from the second support of the rotation shaft to define a gap therebetween when the rotation shaft rotates. The gas bearing assembly includes an elastic member interposed between the gas bearing bracket and the gas bearing to elastically support the gas bearing.

A gas bearing for a compressor includes a bearing portion and a sealing portion mounted to a bearing housing of the compressor via one or more dampers, and the sealing portion being fixedly connected to the bearing portion, and a vent with an inlet in the bearing. The bearing portion has an inner radial surface for radially supporting a shaft of the compressor. The sealing portion has a sealing surface. The inlet of the vent disposed between the inner radial surface and the sealing surface. The sealing surface and a rotating surface form a path that extends along the sealing surface. The path extending from a pressurized volume of the compressor to the vent, and the pressurized volume containing a fluid.

An imaging system (100) includes an annular bearing (404) with an iso-center (406). The annular bearing includes a stationary side (404.sub.1) and a rotatable side (404.sub.2) with at least one alignment feature (420). The imaging system further includes a rotating gantry (410) mechanically coupled to the rotatable side. The imaging system further includes an imaging component (412, 416, 418). The imaging components includes at least one complementary alignment feature (602, 804) that is complementary to the at least one alignment feature (420, 802, 1200) of the rotatable side. The rotating gantry is between the imaging component and the rotatable side, and the imaging component is aligned with the iso-center through the at least one alignment feature and the at least one complementary alignment feature.

The invention relates to a bearing device comprising a first surface and a second surface which are moveable relative to one another, wherein the first and second surfaces are separated by a bearing gap filled with a lubricant, which is a magnetorheological or electrorheological liquid, or a lubricant having a temperature dependent viscosity, or a lubricant having a controllable slip velocity. The bearing device further comprising one or more supply inlets in the first or second surface, and one or more activators embedded in the first surface or second surface and configured to locally increase a viscosity or decrease the slip velocity of the lubricant in at least one obstruction zone, thereby inhibiting a flow of the lubricant in the obstruction zone.

A fluid machine includes a rotating body, an operation body rotated integrally with the rotating body, a housing, hydrodynamic plain bearings rotatably supporting the rotating body relative to the housing, and a cooling passage arranged in the housing. The hydrodynamic plain bearings each include a resin coating layer at a portion that is opposed to the rotating body. The hydrodynamic plain bearings include at least one combination of hydrodynamic plain bearings. Each combination includes an upstream hydrodynamic plain bearing and a downstream hydrodynamic plain bearing located at different positions in a direction in which the fluid flows through the cooling passage. The coating layer of the upstream hydrodynamic plain bearing has a lower hardness than the coating layer of the downstream hydrodynamic plain 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.

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 motor assembly includes a rolling bearing installed on a rotation shaft between an impeller and a rotor to support a first support of the rotation shaft, and a motor housing having a stator. The motor housing has a gas bearing bracket for accommodating a second support of the rotation shaft disposed at a side opposite to the first support with respect to the rotor. The motor assembly includes a gas bearing assembly in the gas bearing bracket to support rotation of the second support of the rotation shaft. The gas bearing assembly includes a gas bearing for surrounding the second support. The gas bearing is spaced apart from the second support of the rotation shaft to define a gap therebetween when the rotation shaft rotates. The gas bearing assembly includes an elastic member interposed between the gas bearing bracket and the gas bearing to elastically support the gas bearing.