A bearing for an exhaust gas turbocharger may include an annular body and a centrally arranged passage opening for bearing a shaft at least one of axially and radially with respect to a rotation axis. The body may include an oil pocket, a wedge surface extending at least partially in a circumferential direction, and a detent surface circumferentially spaced from the oil pocket via the wedge surface. The detent surface may include a predetermined wear height configured to be worn down over an operating lifespan of the bearing. A radially inner flange may extend at least partially along the wedge surface in the circumferential direction and define an inner sealing web. A radially outer flange may extend at least partially along the wedge surface in the circumferential direction and define an outer sealing web.

A bearing for a turbocharger may include an annular body and a centrally arranged passage opening for bearing a shaft at least one of axially and radially with respect to a rotation axis. The body may include at least one segment extending at least partially about the passage opening in a circumferential direction. The at least one segment may include an oil pocket, a circumferentially extending wedge surface and a detent surface circumferentially spaced from the oil pocket. The segment may also include a radially inner flange extending at least partially along the wedge surface in the circumferential direction. The inner flange may define an inner sealing web that may continue uninterruptedly into the detent surface.

A bearing system for a turbocharger includes a bearing housing having a first end and a second end, with the bearing housing defining a central passageway. A first ball bearing and a second ball bearing are received by the bearing housing. The second ball bearing is spaced from the first ball bearing. The first and second ball bearings are each preloaded.

A supercharging device, for example an exhaust gas turbocharger, may include a rotor mounted in a housing via an axial bearing. The axial bearing may include an axial bearing disc, a membrane, and a screw connection that secures the axial bearing disc to the membrane through an opening in the membrane. The axial bearing may further include a bush connected to the housing. The membrane may be clamped in between the bush and the housing. An adjusting screw may be inserted into an opening of the bush. The adjusting screw may delimit and/or facilitate an axial movement of the screw connection and the axial bearing disc.

An exhaust-gas turbocharger (1) comprising a compressor (2); a turbine (3); and a bearing housing (4), in which there is arranged a bearing cartridge (5), secured against axial displacement and twisting; and a single fixing element (6) securing the bearing cartridge (5) both against axial displacement and also twisting in the bearing housing (4). Also a method for assembling a bearing cartridge (5) in a bearing housing (4) of an exhaust-gas turbocharger (1).

A turbocharger assembly can include a housing with a through bore and an axial face disposed in the through bore; a locating plate with a keyed opening attached to the housing; and a journal bearing disposed in the through bore where the journal bearing includes a keyed compressor end and an enlarged outer portion defined between two axial faces by an outer diameter and an axial length where the axial face disposed in the through bore of the housing, the locating plate, and the two axial faces of the journal bearing axially locate the journal bearing in the through bore and where the keyed opening of the locating plate and the keyed compressor end of the journal bearing azimuthally locate the journal bearing in the through bore. Various other examples of devices, assemblies, systems, methods, etc., are also disclosed.

A turbocharger bearing system comprising a shaft (211) including at least one shoulder (A2) with a rotor (212) disposed on the shaft (211). First and second bearing sleeves (254) are disposed on the shaft (211) at opposite ends of the rotor (212). Each bearing sleeve (254) includes a collar (213) and a journal portion (225). A journal bearing (249) is disposed on each journal portion (225) and the journal portion (225) of the first bearing sleeve (254) abuts the shoulder (A2) of the shaft (211). In certain aspects of the technology described herein, the bearing sleeves (254) may be oriented in opposite directions. The shaft (211) is the same diameter where the bearing sleeves (254) are positioned. Accordingly, the bearing sleeves (254) may be interchangeable, as well as the journal bearings (249).

A turbocharger for a combustion engine has an adjusting device for matching its operating behavior to the operating behavior of the combustion engine, an actuating actuator, and a transmission element. The transmission element is coupled between the actuating actuator and the adjusting device. The transmission element has a one-part component body, which in each case extends from a first coupling point to a second coupling point along a longitudinal axis and, in each of its end regions, has a coupling element for coupling to the actuating actuator and to the adjusting device. The respective coupling element is designed as an integral part of the component body in the form of a ball receptacle of a ball joint connection in the component body.

The invention relates to an exhaust-gas-driven turbocharger having a hydrodynamic plain bearing having a rotor and a stator, the rotor being rotatable with respect to the stator, the rotor bearing surface being located opposite a counter-surface of the stator in order to generate hydrodynamic pressure in the region of a converging gap. In such a hydrodynamic plain bearing, the application properties can be improved by the fact that the rotor bearing surface and/or the counter-surface constitutes in a section view, in the context of a section along and through the rotation axis, a continuous bearing contour that is constituted from convex or concave curvatures and/or from at least two contour segments that are embodied as straight lines and/or curvatures. The invention also relates to a hydrodynamic plain bearing or bearing arrangement having such a plain bearing.

Provided is a supercharger (11) comprising: a hollow housing (15); a rotating shaft (14) rotatably supported by the housing (15); a turbine (12) provided at one axial end of the rotating shaft (14); and a compressor (13) provided at the other axial end of the rotating shaft (14). A threaded section (41) and a circular column section (42) are axially arranged at the other end of the rotating shaft (14). A threaded hole (43) with which the threaded section (41) is engaged and a fitting hole (44) in which the circular column section (42) is fitted are axially arranged in the compressor (13). The axial length of the circular column section (42) and the fitting hole (44) is set to be greater than the axial length of the threaded section (41) and the threaded hole (43).