An assembly (400, 600,700) for a turbocharger comprising: a bearing cartridge (200, 300, 800) that comprises an outer race (205, 305) having an outer diameter (Do1, Do1'); a housing (440, 940) that comprises a substantially cylindrical bore having a longitudinal axis (x), a proximate end, a distal end, and an inner diameter that exceeds the outer diameter (Do1, Do1') of the outer race (205, 305) of the bearing cartridge (200, 300, 800), a counterbore (442, 942) substantially coaxial to the cylindrical bore at the distal end of the cylindrical bore and having an inner diameter less than the outer diameter (Do1, Do1') of the outer race (205, 305) of the bearing cartridge (200, 300, 800) wherein the counterbore (442, 942) limits axial movement of the outer race (205, 305) at the distal end of the cylindrical bore, a lubricant drain opening, and a pin opening (444, 944) accessible via the lubricant drain opening; a plate (450, 750) positioned substantially orthogonal to the longitudinal axis (x) of the cylindrical bore at the proximate end of the cylindrical bore wherein the plate (450, 750) limits axial movement of the outer race (205, 305) at the proximate end of the cylindrical bore; and a pin positioned in the pin opening (444, 944) of the housing (440, 940) via the lubricant drain opening wherein the pin limits rotation of the outer race (205, 305). a bearing cartridge (200, 300, 800) that comprises an outer race (205, 305) having an outer diameter (Do1, Do1'); a housing (440, 940) that comprises a substantially cylindrical bore having a longitudinal axis (x), a proximate end, a distal end, and an inner diameter that exceeds the outer diameter (Do1, Do1') of the outer race (205, 305) of the bearing cartridge (200, 300, 800), a counterbore (442, 942) substantially coaxial to the cylindrical bore at the distal end of the cylindrical bore and having an inner diameter less than the outer diameter (Do1, Do1') of the outer race (205, 305) of the bearing cartridge (200, 300, 800) wherein the counterbore (442, 942) limits axial movement of the outer race (205, 305) at the distal end of the cylindrical bore, a lubricant drain opening, and a pin opening (444, 944) accessible via the lubricant drain opening; a substantially cylindrical bore having a longitudinal axis (x), a proximate end, a distal end, and an inner diameter that exceeds the outer diameter (Do1, Do1') of the outer race (205, 305) of the bearing cartridge (200, 300, 800), a counterbore (442, 942) substantially coaxial to the cylindrical bore at the distal end of the cylindrical bore and having an inner diameter less than the outer diameter (Do1, Do1') of the outer race (205, 305) of the bearing cartridge (200, 300, 800) wherein the counterbore (442, 942) limits axial movement of the outer race (205, 305) at the distal end of the cylindrical bore, a lubricant drain opening, and a pin opening (444, 944) accessible via the lubricant drain opening; a plate (450, 750) positioned substantially orthogonal to the longitudinal axis (x) of the cylindrical bore at the proximate end of the cylindrical bore wherein the plate (450, 750) limits axial movement of the outer race (205, 305) at the proximate end of the cylindrical bore; and a pin positioned in the pin opening (444, 944) of the housing (440, 940) via the lubricant drain opening wherein the pin limits rotation of the outer race (205, 305).