A bearing assembly for a charging apparatus. The bearing assembly comprises a bearing housing and a shaft. The bearing assembly further comprises a compressor-side bearing bushing and a turbine-side bearing bushing which together support the shaft inside a bearing bore of the bearing housing. The bearing assembly is configured to supply unequal amounts of lubricant to a compressor-side outer lubrication gap of the compressor-side bearing bushing and to a turbine-side outer lubrication gap of the turbine-side bearing bushing. The bearing assembly is further configured to supply unequal amounts of lubricant to a compressor-side inner lubrication gap of the compressor-side bearing bushing and to a turbine-side inner lubrication gap of the turbine-side bearing bushing.

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.

Tooling for clocking dual eccentric bushings of a clevis so that the clevis and a lug can be pinned together, comprises a pin and a sleeve. The pin comprises a pin cylindrical portion, a plate-engagement portion, and a stop surface. The sleeve comprises a sleeve cylindrical outer surface and a sleeve interior channel that has an interior-channel central axis, which is parallel to and offset from a sleeve-cylindrical-outer-surface central axis. The pin cylindrical portion is configured to be received by the sleeve interior channel with a slip fit. The tooling further comprises a squaring plate that comprises a squaring-plate abutment surface, configured to contact the stop surface, and a squaring-plate opening configured to receive the plate-engagement portion of the pin with a slip fit.

Methods and systems are provided for a steering axle assembly. In one example, a system may include a tapered pin coupled to a steering knuckle and to an axle beam end. A set of bushings may circumferentially surround the tapered pin and enable rotation of the steering knuckle around the tapered pin without lubricant.

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 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 rotation rod assembly includes a first linkage rod having a first bore extending therein. The rotation rod assembly includes a second linkage rod having a piston section extending axially therefrom, the piston section is disposed for rotation in the first bore. The piston section is axially restrained in the bore. The piston section has a self-lubricating liner secured to at least one outer surface thereof. The self-lubricating liner is in sliding engagement with portions of the bore. The liner is secured to the radially and/or axially outer surfaces of the piston section and has at least one groove therein for collection of wear materials and debris.

Compact thrust bearing assemblies, mechanical assemblies including the compact thrust bearing assemblies, and methods of providing limited rotational motion in a compact thrust bearing assembly are disclosed herein. The thrust bearing assemblies include a plurality of rigid load-bearing structures arranged in a layered stack that defines a first end and an opposed second end. The thrust bearing assemblies further include a plurality of rotation-limiting structures configured to restrict relative rotation between adjacent pairs of rigid load-bearing structures. The thrust bearing assemblies also include a first load-receiving surface configured to receive a first thrust load and a second load-receiving surface configured to receive a second thrust load. The methods include methods of providing limited rotational motion in a thrust bearing assembly.

A fluid film bearing, includes a first and second part, wherein the first part includes at least two annular sliding surfaces, wherein the second part includes a respective group of pads for each of the annular sliding surfaces, wherein a respective pad sliding surface of each pad in a respective group supports the respective annular sliding surface, wherein the pads of each group are distributed in the circumferential direction along the second part, wherein at least one pad of a selected one of the groups is arranged such that spacing of the pads in the selected group along the circumference is irregular and/or wherein the selected or a selected one of the groups includes two different types of pads and/or wherein the pads of the or a selected one of the groups are offset in the circumferential direction with respect to the pads of a further one of the groups.