| 摘要 |
A bearing system for use in high speed rotating machinery, such as a turb ocharger (14), wherein a shaft (12) is rotatably supported by a floating bea ring cartridge ( 10) having axially spaced angular contact bearings (16, 18) each with a set of bearing balls (30) supported between inner and outer rac es (32, 34). The bearing cartridge includes an inner spacer sleeve (42) for axially spacing the inner bearing races, and a rotationally floating outer s leeve (46) having a pair of radially inwardly open grooves (52) for removabl y receiving snap-type retaining rings (54) which engage and axially space th e outer bearing races. The axial dimension of the inner spacer sleeve is elo ngated slightly relative to an axial dimension defined between outboard face s of the installed retaining rings, thereby slightly unloading the sets of b earing balls from their respective outer bearing races. Such slight axial un loading enhances smooth- running operation with minimal bearing wear, while accommodating transient loads during operation.
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