Head support arm for a disk drive

摘要

A head supporting device comprises a support arm (2) and a head mounted to an underside surface at one end of the support arm. The support arm is disposed in a rotatable manner about a bearing unit (10) in a radial direction of a recording medium as well as a perpendicular direction with respect to a writing surface of the recording medium, and the support arm is provided with resilient means (4) for imposing upon itself with a thrusting force in a direction toward the recording medium. Because of this structure, a portion serving as the support arm can be formed with a material of high rigidity, the thrusting force of the resilient means upon the slider can be set freely as desired, and its resonance frequency can be increased, thereby providing the head supporting device with an extremely high resistance to shock, and high responsivity with capability of making a high speed access.