The invention relates inter alia to a blood pump (1) having an axially tubular inlet (2), a tangential chamber (3) adjoining the axial inlet (2) and having a substantially radial outlet (18), an axial guide body (8 45) connected to the outlet and/or to the tangential chamber, an impeller (9) supported on the guide body (8 45) and having an inner surface (34) facing the guide body and an outer surface (33) as well as blading (20) arranged on the outer surface (33).In accordance with the invention, at least one part region (8.2 8.1) of the guide body projects from the tangential chamber (3) into the inlet (2), wherein at least one section of the stator (12) transmitting a force onto the rotor (13) is arranged in the part region (8.1, 8.2). The impeller (9) is supported by a hydrodynamic radial bearing in the radial direction.
