A squeeze film bearing cartridge (200, 300, 400) for a turbocharger comprising: a longitudinal axis extending between a compressor side and a turbine side; two angular contact ball bearings joined together in the cartridge; and a bearing cartridge outer surface that comprises a center section (206, 306, 406) that comprises a lubricant opening for a pin to axially locate the cartridge in a housing; two outer sections (212, 212', 312, 312', 412, 412') having a first outer diameter (D O 2, D O 2') centered at the longitudinal axis; two intermediate sections (210, 210', 310, 310', 410, 410') having a second outer diameter (D O 1, D O 1') centered at the longitudinal axis, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the fist outer diameter (D O 2, D O 2') exceeds the second outer diameter (D O 1, D O 1'); a first well intermediate the center section and one of the intermediate sections and a second well intermediate the center section and the other of the intermediate sections, wherein the first and second wells include an opening (207, 207') to allow lubricant to enter the bearing cartridge and be directed at the balls of a respective one of the ball bearings; and a first grind relief intermediate one of the intermediate sections and one of the outer sections and a second grind relief intermediate the other of the intermediate sections and the other of the outer sections, wherein the two outer sections act to minimize rotor radial freedom and wherein the two intermediate sections act to dampen rotor imbalance forces. a longitudinal axis extending between a compressor side and a turbine side; two angular contact ball bearings joined together in the cartridge; and a bearing cartridge outer surface that comprises a center section (206, 306, 406) that comprises a lubricant opening for a pin to axially locate the cartridge in a housing; two outer sections (212, 212', 312, 312', 412, 412') having a first outer diameter (D O 2, D O 2') centered at the longitudinal axis; two intermediate sections (210, 210', 310, 310', 410, 410') having a second outer diameter (D O 1, D O 1') centered at the longitudinal axis, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the fist outer diameter (D O 2, D O 2') exceeds the second outer diameter (D O 1, D O 1'); a first well intermediate the center section and one of the intermediate sections and a second well intermediate the center section and the other of the intermediate sections, wherein the first and second wells include an opening (207, 207') to allow lubricant to enter the bearing cartridge and be directed at the balls of a respective one of the ball bearings; and a first grind relief intermediate one of the intermediate sections and one of the outer sections and a second grind relief intermediate the other of the intermediate sections and the other of the outer sections, wherein the two outer sections act to minimize rotor radial freedom and wherein the two intermediate sections act to dampen rotor imbalance forces. a center section (206, 306, 406) that comprises a lubricant opening for a pin to axially locate the cartridge in a housing; two outer sections (212, 212', 312, 312', 412, 412') having a first outer diameter (D O 2, D O 2') centered at the longitudinal axis; two intermediate sections (210, 210', 310, 310', 410, 410') having a second outer diameter (D O 1, D O 1') centered at the longitudinal axis, the intermediate sections positioned intermediate the center section and a respective one of the outer sections and wherein the fist outer diameter (D O 2, D O 2') exceeds the second outer diameter (D O 1, D O 1'); a first well intermediate the center section and one of the intermediate sections and a second well intermediate the center section and the other of the intermediate sections, wherein the first and second wells include an opening (207, 207') to allow lubricant to enter the bearing cartridge and be directed at the balls of a respective one of the ball bearings; and a first grind relief intermediate one of the intermediate sections and one of the outer sections and a second grind relief intermediate the other of the intermediate sections and the other of the outer sections, wherein the two outer sections act to minimize rotor radial freedom and wherein the two intermediate sections act to dampen rotor imbalance forces.