A bearing system for a turbocharger shaft includes an elongated bearing carrier
with two anti-friction ball bearings mounted in its ends and with a radially extending
flange at one end that cooperates with stationary housing portions and carries
thrust loads of the rotor in both directions. The elongated bearing carrier is
supported within the housing by axially spaced elastic supports which permit the
rotating assembly to rotate about its mass center and provide a shock and vibration
cushion. The elongated bearing carrier and housing cooperate to provide a coolant
cavity which communicates with the outside periphery of the elongated bearing carrier
between the axially spaced elastic supports, which also act as coolant seals between
the elongated bearing cavity and the bearing housing.