Patent ID: 6339270
Filing Date: 2002-01-15
Classification: F16C,G11B,H02K

Abstract:
A storage disk drive motor including a stationary member and a rotary member, the rotary member made from a non-magnetic material and carrying at least one storage disk and rotatable relative to the stationary member, the storage disk drive motor comprising:a plurality of salient poles each including a laminated plurality of thin, wafer-shaped magnetic elements, provided circumferentially spaced on said rotary member and projecting from said rotary member axially inward; a stator disposed on said stationary member and axially opposing said plurality of salient poles, such that electromagnetic force developed by energization of the stator magnetically attracts said rotary member axially inward; and a thrust bearing for generating thrust load bearing force acting axially outward, wherein magnetic attractive force of said stator is balanced with thrust load-bearing force developed in said thrust bearing.