Composite stator and base for a low profile spindle motor

摘要

An axially minimized spindle motor is provided that meets industry demands for low profile disc drive memory systems including stiffness, vibration and acoustic demands. Axial height of a base plate is reduced by forming a composite component of the stator and base plate. A thermally conductive bonding substance unites the stator and base plate, and fills in at least a portion of open space adjacent the base plate and stator. By making such a composite component, the axial thickness of the base plate may be reduced. In an aspect, a base plate is provided having an axial height adjacent to a stator in the range of 0.1 mm to 0.3 mm with improved stiffness, reduced vibration and reduced acoustics as compared to conventional low profile disc drive designs.