A bearing assembly is configured to retain a distal end of an impeller of a blood pump, where the impeller includes a drive shaft. The bearing assembly includes a pivot member coupled to a distal end of the drive shaft; a distal bearing cup having a proximally-facing surface configured to engage at least a portion of a distal section of the pivot member; and a sleeve bearing disposed around at least a portion of a proximal section of the pivot member.

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 journal foil bearing system includes a retainer arrangement with an internal groove extending in a depth direction from the bore of the housing. The internal groove has a first portion and a second portion. The first portion extends further in the depth direction than the second portion and includes a seat surface of the internal groove. The retainer arrangement additionally includes a first top foil end and a second top foil end of the top foil member. The first top foil end is configured to abut the second top foil end to arch-bind the at least one top foil within the bearing system. The first top foil end is received in the first portion of the internal groove and is configured to seat against the seat surface to limit rotation of the first top foil end about the axis. The second top foil end is received in the second portion of the internal groove.

A journal foil bearing system includes a retainer arrangement with an internal groove extending in a depth direction from the bore of the housing. The internal groove has a first portion and a second portion. The first portion extends further in the depth direction than the second portion and includes a seat surface of the internal groove. The retainer arrangement additionally includes a first top foil end and a second top foil end of the top foil member. The first top foil end is configured to abut the second top foil end to arch-bind the at least one top foil within the bearing system. The first top foil end is received in the first portion of the internal groove and is configured to seat against the seat surface to limit rotation of the first top foil end about the axis. The second top foil end is received in the second portion of the internal groove.

Provided is an air foil thrust bearing including a bump foil plate in which a plurality of bump foils are formed and an arrest ring protrudes in a thickness direction; and a top foil plate in which a plurality of top foils are formed, a through-hole penetrating through both sides of a second plate is formed in a position corresponding to the arrest ring, the top foil plate being stacked on the bump foil plate, wherein the arrest ring is inserted into and penetrates through the through-hole, the arrest ring is bent toward the top foil plate so that the second plate is caught in the arrest ring, and a time for a thrust runner to rise from the top foil at an early stage of starting a rotor as the arrest ring is spaced apart from the second plate.

A fluid film bearing includes a plurality of bearing pads that are arranged in a circumferential direction of a rotating body that rotates about an axis, and that support the rotating body via a fluid film, wherein the bearing pad includes a base layer made of metal, an elastic layer that is layered on the rotating body side of the base layer, and that is made of an elastically deformable elastic material, a sliding layer that is layered on the rotating body side of the elastic layer, and that opposes the rotating body and is made of a bearing material, and a metal plate that is layered between the elastic layer and the sliding layer, and that is more rigid than the elastic layer and the sliding layer.

A fluid film bearing includes a plurality of bearing pads that are arranged in a circumferential direction of a rotating body that rotates about an axis, and that support the rotating body via a fluid film, wherein the bearing pad includes a base layer made of metal, an elastic layer that is layered on the rotating body side of the base layer, and that is made of an elastically deformable elastic material, a sliding layer that is layered on the rotating body side of the elastic layer, and that opposes the rotating body and is made of a bearing material, and a metal plate that is layered between the elastic layer and the sliding layer, and that is more rigid than the elastic layer and the sliding layer.

An assembly having an outer component, an inner component, and a ring positioned between the outer component and the inner component, where the ring has at least one radially extending projection adapted to seat within at least one groove in the inner component or outer component, and where the projection is adapted to compress radially to allow rotational or axial movement between the inner component and the outer component upon application of rotational or axial force respectively to at least one of the inner component or the outer component.

An assembly having an outer component, an inner component, and a ring positioned between the outer component and the inner component, where the ring has at least one radially extending projection adapted to seat within at least one groove in the inner component or outer component, and where the projection is adapted to compress radially to allow rotational or axial movement between the inner component and the outer component upon application of rotational or axial force respectively to at least one of the inner component or the outer component.

A sliding bearing is made of a resin and includes a tubular portion that includes an outer peripheral surface including a D-cut surface. A flange portion, which protrudes from the D-cut surface, is formed at one end portion of the tubular portion. An engagement portion is formed at the other end portion of the tubular portion. A protruding portion is formed on the outer peripheral surface of the tubular portion at a circumferential position that is outside a region in which the D-cut surface is formed and that is outside a region in which the engagement portion is formed.