Abstract: A method and an apparatus for centering a disc drive assembly are disclosed. The assembly includes a rotational hub of a spindle motor, several annular spacer elements, and several disc platters loosely assembled into a disc pack. The rotational hub, each of the discs, and each of the spacer elements are centered respectively using a corresponding set of three springs as points of contact. The alignment and positioning of the springs are precisely controlled. Once centered, a retaining nut is fastened to a threaded portion of the spindle motor to firmly clamp the disc pack together before withdrawing the springs. Hub centering springs, disc centering springs, and spacer element springs are all adapted to provide the three points of contact for each component of the disc pack.

Abstract: A method and an apparatus for centering a disc drive assembly are disclosed. The assembly includes a rotational hub of a spindle motor, several annular spacer elements, and several disc platters loosely assembled into a disc pack. The rotational hub, each of the discs, and each of the spacer elements are centered respectively using a corresponding set of three springs as points of contact. The alignment and positioning of the springs are precisely controlled. Once centered, a retaining nut is fastened to a threaded portion of the spindle motor to firmly clamp the disc pack together before withdrawing the springs. Hub centering springs, disc centering springs, and spacer element springs are all adapted to provide the three points of contact for each component of the disc pack.

Abstract: An apparatus for use with a torque driver for engaging the head of a screw and enabling a screw to be picked up is disclosed. The apparatus includes a sleeve that longitudinally extends from and retracts into the apparatus. The apparatus also includes a gripper for gripping the head of the screw. The gripper is actuated by the sleeve to widen and close in response to extension and retraction of the sleeve.