The invention relates to a compressor (20) for generating a compressed air flow for a fuel cell (10), having a compressor element (21), in particular a compressor wheel, wherein the compressor element (21) is coupled in a to a drive shaft (23) for co-rotation, the drive shaft (23) being driven by a motor (22), in particular an electric motor, wherein at least one hydrodynamic or hydrostatic bearing (24, 25) is used to mount the shaft (23) in a rotatable manner, wherein the plain bearing (24, 25) is connected to a lubricant supply means (30), which is used to supply a lubricant for hydrodynamic or hydrostatic pressure generation to the plain bearing (24, 25), wherein the lubricant is water or a fluid mixture, predominantly comprising water, wherein the plain bearing (24, 25) has a lubricant inlet and a lubricant outlet, wherein the lubricant can be routed to the plain bearing (24, 25) via the lubricant inlet and the lubricant can be discharged from the plain bearing (24, 25) via the lubricant outlet, and wherein a discharge area of the circulation system (30) is disposed in the area of the lubricant outlet. An operationally safe design can be implemented for such a compressor if provision is made for the cross-section area of the outlet of the liquid outlet of the plain bearing (24, 25) to be completely covered by the lubricant held in the discharge area.

A bearing assembly installed within a turbocharger housing between a turbine wheel and a compressor impeller mounted for rotation together on a turbocharger shaft may include a journal bearing disposed on a corresponding portion of the turbocharger shaft, a thrust bearing having a thrust bearing surface, and a bearing carrier. The bearing carrier may include a carrier body, a carrier body bore extending axially through the carrier body and receiving the journal bearing therein, and a thrust bearing seat on the exterior of the carrier body facing the turbine wheel. The thrust bearing seat may have a complimentary shape to the thrust bearing surface of the thrust bearing, the thrust bearing disposed between the carrier body and the turbine wheel and engaging the thrust bearing seat. The bearing assembly may further include an anti-thrust bearing surface facing the compressor impeller, and an anti-thrust bearing mounted to the anti-thrust bearing surface.

A bearing support for a turbocharger, the bearing support including a body, a bore extending axially through the body and dimensioned to receive a bearing and a portion of a planet carrier, and a plurality of pilots. Each pilot may be formed on an external surface of the body, and each pilot may be machined for an interference fit with a different component of the turbocharger.

A turbomachine comprising a turbomachine shaft for rotation about an axis and for supporting a turbine wheel at one end of the turbomachine shaft; and a bearing housing having a wall defining a bore in which the turbomachine shaft is received with a substantially annular clearance, the turbomachine shaft being supported for rotation in the bore by at least one journal bearing located within the annular clearance. A surface of the turbomachine shaft which radially underlies the or each journal bearing has a surface roughness (Ra) of less than 0.15 microns and the or each journal bearing comprises a bronze alloy incorporating bismuth in an amount of up to around 6 wt %.

A turbo fluid machine includes a partition wall separating an inside of a housing into a compression space and a bearing space; and a foil bearing. The partition wall includes a support part having an end face raised toward a thrust collar in an axial direction. The support part has a groove formed in the end face and radially extending to an outer peripheral surface of the support part. Top foils of the foil bearing each have one surface facing the thrust collar and the other surface elastically supported by corresponding one of bump foils of the foil bearing. The foil bearing is mounted on the end face such that a position of the groove corresponds to a position of a gap between the bump foils and a position of a gap between the top foils and such that the groove faces the thrust collar in the axial direction.

A turbocharger assembly can include a center housing that includes a compressor side, a turbine side, a bore that extends between the compressor side and the turbine side and a socket at the compressor side; a journal bearing disposed in the bore; and a lubricant deflector disposed at least partially in the socket. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

A foil segment bearing comprises a bearing backing with a through opening. A shaft is arranged in the through opening such that a gap exists between the shaft and the bearing backing. The foil segment bearing also has at least one first bearing segment and one second bearing segment with respective inner surfaces. Each of the respective inner surfaces defines a bearing surface with an adjustable circumference. The bearing segments are arranged in the bearing backing at a distance from the shaft such that a gap exists between the shaft and the bearing segments. The foil segment bearing also has a foil arrangement arranged in the gap between the inner surfaces of the bearing segments and the shaft. The foil segment bearing also has an adjustment mechanism configured to set a geometry of the gap.

The invention relates to a tilting pad bearing (10) comprising tilting pads (1, 2, 3), which are retained and positioned so that they can tilt in a housing body (8) with a frame-type spring unit (8), such that, during operation of the tilting pad bearing (10), converging bearing gaps are created between the tilting pads (1,2,3) and a rotor body (4) that is rotatably mounted about an axis of rotation. In order to improve the functioning and/or manufacturing of the tilting pad bearing (10), the tilting pad bearing (10) is characterised by rolling elements (6, 7) arranged between the housing body (5) and the tilting pads (1,2, 3).

A turbocharger is provided including a turbine, a compressor and a bearing housing. A shaft is rotatably disposed within the bearing housing and extends into the turbine and the compressor. A bearing arrangement is disposed between the shaft and the bearing. The bearing arrangement includes a roller bearing formed between an outer bearing race element disposed in the bearing bore, and an inner bearing race element disposed in the outer bearing race element. A bearing retainer connected between the bearing housing and the compressor. An end portion of the bearing inner race element includes an integral oil slinger comprising a radially outward extending portion that slopes away from the shaft.

Provided is a journal bearing structure including: a journal bearing that supports a rotary shaft by an inner circumferential surface; and a bearing housing that holds an outer circumferential surface of the journal bearing by the inner circumferential surface, the journal bearing has an oil supply hole through which the inner circumferential surface and the outer circumferential surface communicate with each other, the bearing housing has an oil supply hole opened to an inner circumferential surface, and an oil supply groove extending in a circumferential direction about an axis line and configured to guide a lubricant discharged from the oil supply hole to the oil supply hole is formed in the inner circumferential surface of the bearing housing.