Patent ID: 8824095

Claim:
A spindle motor for a disk drive comprising: a rotor comprising a hub defining a longitudinal axis, said hub comprising: a hub flange defining a mounting surface extending substantially normal to the longitudinal axis, wherein the hub flange of the hub extends longitudinally relative to the mounting surface to define a vertical surface, and wherein the hub flange of the hub has a shielding portion comprising: a horizontal shield extending from the vertical surface of the hub flange of the hub in a direction substantially normal to the longitudinal axis, and a vertical shield extending longitudinally relative to horizontal shielding portion of the hub; and a motor base coupled to the hub proximate to the shielding portion of the hub, the motor base having a central axis substantially aligned with the longitudinal axis, wherein the motor base extends longitudinally, wherein a radius of the shielding portion of the hub is greater than a radius of the hub flange of the hub.