Patent ID: 7517154
Filing Date: 2009-04-14
Classification: F01D,F05D,F16C

Abstract:
1. A shaft bearing system for use in a turbomachine having a turbine wheel and a compressor impeller carried on a common shaft extending through a turbomachine center housing, said shaft bearing system comprising: an axially split bearing carrier including a pair of generally cylindrical bearing sleeves mounted within the center housing; a pair of angular contact ball bearing units each having a complement of bearing balls carried between an inner race ring and an outer race ring, said bearing units being mounted on the shaft and mounted respectively within said bearing sleeves whereby said bearing units rotatably support the shaft relative to said bearing sleeves; said bearing units being configured to carry thrust loads acting in an axially outboard direction relative to the center housing; and thrust means for applying an axial thrust load of predetermined force to said bearing sleeves in an axially inboard direction relative to said center housing, said thrust load being transmitted by said bearing sleeves to the associated bearing units mounted therein.