Anisotropic bearing supports for turbochargers

A rotating assembly for a turbocharger comprising:

• a center housing that comprises a through bore having a central axis;
• a bearing cartridge positioned in the through bore wherein the bearing cartridge comprises an outer race, an inner race and rolling elements disposed between the inner race and the outer race;
• two anisotropic members positioned in the through bore between the outer race of the bearing cartridge and a surface of the center housing wherein the surface defines at least part of the through bore of the center housing;
• and
• a shaft rotatably supported in the center housing by the bearing cartridge wherein the inner race is mounted on the shaft and the shaft is connected at one end to a compressor wheel and at another end to a turbine wheel.

A rotating assembly for a turbocharger comprising:

• a center housing that comprises a through bore having a central axis;
• a bearing cartridge positioned in the through bore wherein the bearing cartridge comprises an outer race, an inner race and rolling elements disposed between the inner race and the outer race and wherein the outer race of the bearing cartridge comprises a recessed annular region;
• an anisotropic member positioned in the through bore between the outer race of the bearing cartridge and a surface of the center housing wherein the surface defines at least part of the through bore of the center housing and wherein the anisotropic member comprises a position at least partially in the recessed annular region;
• and
• a shaft rotatably supported in the center housing by the bearing cartridge wherein the inner race is mounted on the shaft and the shaft is connected at one end to a compressor wheel and at another end to a turbine wheel.