Abstract: An exhaust-gas turbocharger with a bearing housing which receives a static bearing bush for a rotor shaft. A lug supported in the bearing housing engages the bearing bush and prevents the bearing bush from rotating but avoids a restriction of the freedom of movement of the bearing bush in the axial and radial directions.

Abstract: An exhaust-gas turbocharger (1) having a compressor (2) which has a compressor wheel (3) in a compressor housing (4); a turbine (5) which has a turbine wheel (6) in a turbine housing (7); a bearing housing (8) which receives a static bearing bush (9) for a rotor shaft (10) and which has, at the compressor side, a bearing housing cover (11), and a bearing bush rotation prevention means (12) which has at least one lug (13, 14, 15) supported in the bearing housing (8) and which engages into at least one of two grooves (16, 17) of the bearing bush (9). The grooves (16, 17) are arranged diametrically oppositely on an outer circumferential region (18) of the bearing bush (9).

Abstract: The invention relates to an exhaust gas turbocharger (1) having a turbine wheel arrangement (20), comprising: a turbine wheel (4) and a shaft (21), which can be connected to the turbine wheel (4) by means of a connecting section (22), wherein the connecting section (22) has a trunnion (23) with a diameter (DZ) that is smaller than the largest diameter (DWA) of the shaft (21).

Abstract: The invention relates to an exhaust gas turbocharger (1) having a turbine wheel arrangement (20), comprising: a turbine wheel (4) and a shaft (21), which can be connected to the turbine wheel (4) by means of a connecting section (22), wherein the connecting section (22) has a trunnion (23) with a diameter (DZ) that is smaller than the largest diameter (DWA) of the shaft (21).