Patent ID: 8358485

Claim:
A housing member for use in a disk drive apparatus including a motor arranged to rotate a disk, the housing member comprising: a rectangular or substantially rectangular bottom portion; and a side wall portion arranged to extend upward from an outer circumferential portion of the bottom portion; wherein the bottom portion and the side wall portion are defined by a single continuous monolithic member; the side wall portion includes a partially cylindrical side surface arranged to be opposite to an outer circumference of the disk arranged inside the side wall portion, the partially cylindrical side surface being arranged in a shape of a portion of a cylindrical surface, defined inside the side wall portion by a cutting process, and coated with a coating agent; the side wall portion includes four outside surfaces including a first outside surface and a second outside surface perpendicular or substantially perpendicular to the first outside surface; the first outside surface includes a first cutting base region defined by a cutting process and coated with the coating agent; the second outside surface includes a second cutting base region defined by a cutting process and coated with the coating agent; and the bottom portion includes a bearing fixing portion defined in a center of the partially cylindrical side surface by a cutting process, and arranged to have a bearing mechanism of the motor arranged thereon.