LUFTLAGERANORDNUNG FUER EIN ZAHNAERZTLICHES HANDSTUECK

摘要

An improvement in an air bearing device of an air drive, air journal type dental handpiece is disclosed, wherein a radial gap for journaling a rotor in the radial direction comprises partially enlarged gaps which, serving as air pools, improve the handpiece's cutting performance and prevent abnormal noise and vibration of the turbine blade caused by the whirl phenomenon.