Bearing bush for hydrodynamic journal bearings for supporting rotor in stator, particularly exhaust gas turbocharger, has radially inner bearing surface, which has porous upper surface structure or forms porous upper surface structure

摘要

The bearing bush (1) has a radially inner bearing surface (5), which has a porous upper surface structure (6) or forms a porous upper surface structure. An inner sleeve (7) is arranged with an upper surface structure or porous structure. An outer sleeve (8) is arranged with a non-porous or compact structure. An independent claim is included for an exhaust gas turbocharger.