Abstract: A magnetic disk apparatus has a plurality of spacers for connecting to a pivot shaft one ends of suspension arms for supporting sliders such that the suspension arms are separated from each other. Each spacer has a first section engaged with the pivot shaft, a second section connected to a suspension arm and a through-hole extending through the two sections. The first section of the spacer is deformed to frictionally grip the pivot shaft. The spacer is provided with a weakened section for preventing the deformation of the first section from being propagated to the second section.

Abstract: A favorable balance of mass and strength is provided by the truss type beam formed through the use of triangular apertures in the head arm, which further can be arranged to provide a greater leading edge beam strength than trailing edge beam strength. With increased density of data and correspondingly decreased flying height, favorable results are obtained by making the outermost yaw angle greater than the innermost yaw angle. Mass unbalance can be corrected by shifting the coil position.

Abstract: A head positioning system includes data head arms for supporting a data head, support head arms for supporting a support head, and a head actuator for rigidly moving the data and servo head arms as a unitary structure. When there is mounted an amplifier or the like is mounted on at least one of the head arms to change the warping amount depending upon the change in the environmental temperature, a portion of the head arm on which the amplifier is mounted is cut away therefrom but is left partly connected thereto, so that the head arms are all warped in nearly the same amount.