the invention concerns an exhaust - gas power - recovery turbine for a turbo compound system , in particular of a motor vehicle , including : a turbine shaft , which at the first end thereof or in the area of the first end carries a rotor to be impinged by the exhaust gas flow of an internal combustion engine , in order to convert exhaust gas energy into drive power ; and which at the second end thereof carries a pinion , which is designed to be brought into a driving connection with the crankshaft of the internal combustion engine , in order to transmit the drive power to the crankshaft . the invention is characterised in that that the turbine shaft is supported in the area of the rotor by means of a radial plain bearing and in the area of the pinion by means of a radial rolling - element bearing .