Patent ID: 6483215
Filing Date: 2002-11-19
Classification: F16C,G11B,H02K

Abstract:
A disk drive, comprising:a stationary shaft interconnected to a base; an oil-filled rust bearing; an air-filled radial bearing defining a gap having a first diameter; a hub rotatably interconnected to said stationary shaft, wherein said hub is supported in an axial direction by said oil-filled thrust bearing and is supported in a radial direction by said air-filled radial bearing; a plurality of magnets interconnected to said hub; and a stator assembly for interacting with said magnets, wherein said stator assembly is arranged in a circular fashion to define a circle about said plurality of magnets, wherein said circle is concentric to said gap of said air-filled radial bearing, wherein said circle has a second diameter greater than said first diameter of said gap of said air-filled radial bearing, wherein a plane perpendicular to an axis of rotation of said hub that intersects said stator assembly along a line midway between said base and a top of said stator assembly also intersects said air filled bearing, and wherein a diameter of said air filled radial bearing is about equal to a diameter of said oil-filled thrust bearing.