Abstract: A magnetic disk apparatus comprises a magnetic disk for recording information thereon; a power supply; an electric motor for rotating the magnetic disk by means of electric power which is supplied from the power supply; a floating type magnetic head for recording/reproducing the information onto/from the magnetic disk; and a carriage for moving and positioning the magnetic head on the magnetic disk by means of electric power supplied from the power supply, wherein when the rotation of the magnetic disk is started, the magnetic head rises from a predetermined CSS position on the magnetic disk, and when the rotation of the magnetic disk is stopped, the magnetic head comes to rest at the CSS position.

Abstract: An actuator structure in which the arms which support the magnetic heads are of sheet material in back-to-back pairs having ends fitted into and clamped between the confronting faces of pads arranged in columns on an actuator body. The pads in each column are cantilevered from the body on deflectable supports, except for one rigid support substantially centrally positioned in each column. A bolt extending through axially aligned holes in the pads and the arms in each column applies pressure to deflect the pad supports and clamp the arms between the pads.