Patent ID: 6084323
Filing Date: 2000-07-04
Classification: G11B,H02K,Y10T

Abstract:
A spindle motor in a magnetic disc drive, comprising:a base;a shaft fixed to the base and defining a longitudinal axis;a bearing disposed about the shaft;a bearing holder coupled to the bearing, the bearing holder having an extending sleeve;a magnet assembly having a first longitudinal end and a second longitudinal end;a stator coupled to the base and positioned to interact with the magnet assembly; andmeans for coupling the magnet assembly to the sleeve such that the magnet assembly has longitudinal clearance from the bearing holder at both longitudinal ends of the magnet assembly, said means initially allowing the magnet assembly to move axially relative to the sleeve so as to allow the magnet assembly to magnetically axially align with the stator, said means rigidly fixing the magnet assembly to the sleeve after magnetic axial alignment is complete.