Motor for driving storage disks

A mini storage disk drive motor configuration comprising:

• a bracket having a central shaft-mounting hole surrounded by a rimmed boss;
• a shaft fixedly fitted into the shaft-mounting hole;
• a rotor hub peripherally carrying a rotor magnet, said rotor hub having an underside configuration for accommodation into the rimmed boss wherein a thrust bearing at a radially extending axial micro-gap is established between the underside of the rotor hub and the rimmed boss, and said rotor hub having a central through-hole for penetration by said shaft wherein a radial bearing at an axially extending radial micro-gap is established between the shaft circumferentially and the through-hole inner circumferentially, the thrust and radial bearings therein being contiguous;
• and
• a stator mounted on said bracket concentrically encompassing said rotor magnet at an axial and radial spacing;
• wherein
• lubricant is retained continuously in the axial and radial micro-gaps,
• fluid dynamic pressure-generating grooves are striated into the underside of said rotor hub wherein said rotor hub establishes the axial micro-gap, and striated into through-hole superficially wherein said rotor hub establishes the radial micro-gap, the fluid dynamic pressure-generating grooves being configured such that load-bearing pressure acting on the lubricant during rotation of the rotor hub is highest proximate where the thrust and radial bearings are contiguous, and
• magnetic centers of the rotor magnet and the stator are biased axially, whereby an energizing force is imparted to the rotor hub to balance the load-bearing pressure acting on the lubricant during rotation of the rotor hub into an equilibrium of rotation-stable rigidity.