Patent ID: 8496452

Claim:
A center housing rotating assembly comprising: a turbine wheel ( 260 ); a compressor wheel ( 240 ); a center housing ( 210 ) that comprises a through bore ( 215 ), extending from a compressor end to a turbine end along a bore axis, and a recess ( 217 , 297 ), adjacent the bore, in a plane orthogonal to the bore axis; a bearing assembly ( 230 , 291 ) positioned in the bore that comprises an inner race ( 234 ), rolling elements ( 236 ), and an outer race ( 232 , 292 ) with a keyway ( 233 , 293 ); and an anti-rotation component ( 280 , 296 ) seated in the recess ( 217 , 297 ) and at least partially in the keyway ( 233 , 293 ) to restrict rotation of the outer race ( 232 , 292 ) of the bearing assembly ( 230 , 291 ) in the through bore ( 215 ), wherein the anti-rotation component ( 280 , 296 ) comprises dimensions in the plane orthogonal to the bore axis, wherein the recess ( 217 , 297 ) comprises dimensions in the plane orthogonal to the bore axis that exceed the dimensions of the anti-rotation component ( 280 , 296 ) to determine an amount of rotation of the outer race ( 232 , 292 ) in the through bore ( 215 ) by points of contact that restrict rotation of the outer race ( 232 , 292 ) for clockwise rotation of the anti-rotation component ( 280 , 296 ) and by other points of contact that restrict rotation of the outer race ( 232 , 292 ) for counter-clockwise rotation of the anti-rotation component ( 280 , 296 ), and wherein the anti-rotation component does not receive axial thrust forces from an axial face of the outer race.