Bearing housing of a turbocharger for an internal combustion engine

In order to provide a turbocharger (1) for an internal combustion engine with a compressor stage (2), a bearing housing (4) and a turbine stage (3), wherein compressor and turbine impellers (5,6) are seated on a common rotor shaft (7), to which a ventilation system for the separation of oil from the lubricating oil circuit and air, which enters the bearing housing (4) from the compressor and turbine stage (2,3), is assigned, sufficient space to be available with which adequate separation of oil from the lubrication system and air, which can enter its bearing housing via the rotor shaft seals of the turbocharger from the compressor and the turbine, can be ensured and which can furthermore be integrated into the turbocharger in a cost-reducing manner, it is provided that an annular space (10) with a volume sufficient for complete separation of oil and air is created within the bearing housing (4) as the ventilation system.