Patent ID: 7753591

Claim:
A bearing and locating pin system for a turbocharger comprising: a locating pin including a shaft, a head and an aperture for drainage of lubricant; and a single piece bearing including two journal outer surfaces and a central outer surface positioned between the journal outer surfaces wherein the central outer surface has a first diameter that is smaller than the diameter of either journal outer surface, the bearing having a central axis and including an internal bore to receive a shaft extending between a compressor wheel and a turbine wheel to form an inner chamber between the shaft and the internal bore, the internal bore including internal journal surfaces for the received shaft wherein each of the internal journal surfaces comprises a plurality of axial grooves, the bearing including a locating pin aperture located at the central outer surface between axial ends of the bearing for engaging the locating pin to prevent rotation of the bearing within a bearing case bore and to prevent drainage of lubricant via the aperture of the locating pin directly from an outer chamber defined by the bearing, the locating pin and the bearing case bore, the bearing further including a plurality of lubricant inlets, each inlet extending between an outer surface of the bearing and one of the axial grooves at an angle non-orthogonal to the central axis wherein lubricant flow paths exist between the axial grooves and the inner chamber and between the inner chamber and the aperture for drainage of lubricant of the locating pin as engaged by the locating pin aperture of the bearing.