Patent ID: 9695708
Date: 2017-07-04
CPC Classifications: F01D,F02C,F05D,F16C

Claim:
1. A turbocharger bearing assembly comprising: a spacer that comprises an inner surface at an inner diameter that defines an axial through bore, an outer surface at an outer diameter, a compressor side surface and a turbine side surface; a compressor side rolling element bearing that comprises an outer race surface that faces the compressor side surface of the spacer wherein the outer race comprises an outer diameter that exceeds the inner diameter of the spacer; a turbine side rolling element bearing that comprises an outer race surface that faces the turbine side surface of the spacer wherein the outer race comprises an outer diameter that exceeds the inner diameter of the spacer; and a spring seated between a first end cap disposed at least in part in the axial through bore of the spacer and a second end cap disposed at least in part in the axial through bore of the spacer wherein the spring biases an axially facing surface of the first end cap against the outer race surface of the compressor side rolling element bearing, wherein the spring biases an axially facing surface of the second end cap against the outer race surface of the turbine side rolling element bearing, wherein the first and second end caps comprise an end cap outer diameter that is less than the inner diameter of the spacer and wherein the spring comprises an outer diameter that is less than the end cap outer diameter to avoid direct contact between the spring and the spacer.