Exhaust-gas turbocharger, has spacer element and pressure element provided between antifriction bearings, where inner bearing ring of one of bearings is fastened to shaft and outer bearing ring of other bearing is fastened to pipe

摘要

The turbocharger (1) has a turbine wheel and a compressor wheel, where the wheels are arranged at a common shaft (2) supported over compressor-side and turbine-side antifriction bearings (3, 4) e.g. angular roller bearings. The bearing (3) is a fixed bearing and the bearing (4) is a movable bearing, where an inner bearing ring (4'') of the bearing (4) is fastened to the shaft and an outer bearing ring (3') of the bearing (3) is fastened to a casing pipe (6). A spacer element (7) i.e. pipe, and a pressure element (8) i.e. coil spring, are provided between the bearings.