Abstract: A bearing for high-speed rotors, in particular for turbo-superchargers. The bearing includes a one-piece bearing bush floating in oil in the bearing housing and two bearing supports in axially spaced relation to one another. Each support includes axial bearing surface and a directly adjoining radial bearing surface. The bearing bush has all of its bearing surfaces, damping surface, lubricating oil grooves and ducts, the radial bearing surfaces divided by the asymmetrical arrangement of their lubricating oil grooves into an axially inward narrow and an axially outward large bearing portion.

Abstract: A reciprocating-piston-type internal combustion engine, particularly for the operation of passenger automobiles. The engine includes a cylinder head and a crankcase. The upper portion of the crankcase is integrally casted with the cylinder head. A cavity in the crankshaft is connected with ducts supplying lubricating oil to the bearing surfaces for the connecting rods and to the bearing surfaces of the main bearings.