A radial foil bearing includes a carrier foil formed from a corrugated foil, a first curved segment formed from a first top foil and a second curved segment formed from a second top foil. The second curved segment is arranged successively on the carrier foil after the first curved segment to form a tubular carrier comprising two curved segments when the carrier foil is rolled. In an embodiment, the carrier foil has a first end and a second end, and, after the carrier foil is rolled to form the tubular carrier, the tubular carrier has a circumferentially closed shape and the first end faces the second end.

A method for manufacturing a rolling or plain bearing ring includes providing a metallic ring member and applying a load carrying surface onto the metallic ring member by use of a steel wire Directed Energy Deposition (DED) operation and/or a steel metal powder DED operation. Preferably, the steel wire and/or the steel metal powder includes 0.10-0.50 wt % of carbon and 0.50-1.20 wt % of boron.

A plain bearing, with a bearing base body of a metallic material and a plain bearing layer of a non-metallic material. The plain bearing layer is applied to the bearing base body either directly or indirectly via an intermediate layer of a metallic material applied to the bearing base body. The bearing base body of the metallic material or the intermediate layer of the metallic material is produced from an austenitic steel or from a metal alloy. The plain bearing layer of the non-metallic material is produced from polyetheretherketone (PEEK) or from polytetrafluoroethylene (PTFE).

A method for manufacturing a sensorized bearing ring includes the steps of: providing a metallic ring member, applying a sensor member on the metallic ring member, and applying a raceway layer onto the metallic ring member and the sensor member by use of a metallic wire Directed Energy Deposition (DED) operation and/or a metallic powder DED operation.

A wind turbine gearbox, in particular planetary gearbox, has at least one gear which is mounted on an axle, wherein a sliding surface is arranged between the gear and the axle. The sliding surface is arranged on at least one layer of a deposition welded material made from a sliding bearing material. Furthermore, a method produces the wind turbine gearbox.

A sliding member includes a base material. A sliding layer is laminated on the base material and has a matrix and particle phases uniformly and finely dispersed in the matrix. An arbitrary observation cross section is set in the sliding layer, and area rates Sv of the particle phases in the plurality of arbitrary observation regions extracted from the observation cross section are 0.2%Sv5% in all of the observation regions. A maximum particle diameter Da of the particle phases is 0 m<Da30 m.

A wind turbine gearbox, in particular planetary gearbox, has at least one gear which is mounted on an axle, wherein a sliding surface is arranged between the gear and the axle. The sliding surface is arranged on at least one layer of a deposition welded material made from a sliding bearing material. Furthermore, a method produces the wind turbine gearbox.

A hydraulic pump, in particular an adjustable axial piston pump, has at least one piston (22) movable in a reciprocating manner in a longitudinal direction within a pump housing during operation of the hydraulic pump. The piston (22) has a link head (24), a piston top (54) opposite the link head (24), and at least one hollow chamber (60) surrounded at least partially by a piston housing (62) that substantially or completely terminates each hollow chamber (60) towards the outside. A piston (22) for such hydraulic pump is also provided.

A method for coating a pump component (23, 31), in particular, a part of an axial piston pump (7), having the steps of providing a blank of the component (23, 31), providing at least one recess in the blank, filling a powdery coating material into the associated recess, melting the coating material under a protective gas atmosphere and material-removing processing of the blank to form at least one sliding and/or bearing surface (6) from the coating.

An axial piston pump has a swash-plate construction, in particular for hydraulic systems. A cylinder drum (3) can be rotationally driven about a rotational axis (7) in a pump housing (1). Pistons (9) are axially displaceable and support at their actuation ends a swash plate (15). The swash plate can be pivoted by an adjusting device (21) to the desired angles of inclination relative to the rotational axis (7) for adjusting the stroke of the pistons (9) and the fluid pressure generated. The adjusting device has an adjusting piston (35) in a hydraulically actuated adjusting cylinder (31). Their movement can be transmitted to the swash plate (15) by a driven connection having a pivot joint (37, 39; 29, 43). The pivot joint is formed by a ball joint (37, 39) arranged between the piston (35) and the piston rod (41) of the adjusting cylinder (31).