Patent ID: 8365406
Filing Date: 2013-02-05
Classification: F01D,F02C,F05D,F16C,Y10T

Abstract:
1. A method for providing a turbocharger subassembly as a balanced unit, the method comprising: press fitting a shaft into a bearing cartridge wherein the shaft comprises a turbine wheel to form a bearing cartridge and shaft subassembly; clamping the subassembly in a bore of a clamp to secure an outer race of the bearing cartridge; rotating the shaft of the subassembly with the outer race secured by the clamp; measuring unbalance of the subassembly in one or more planes; with the outer race secured by the clamp, pressurizing the bore of the clamp with air to prevent material from entering the bore; and balancing the subassembly by removing material from the turbine wheel in response to the measuring unbalance to provide the subassembly as a balanced unit configured for insertion into a bore of a turbocharger housing without disassembly of the balanced unit.