Patent ID: 8607442

Claim:
A rotating apparatus comprising: a hub on which a recording disk is to be placed; a base plate having a base circular part extending in an axial direction of the hub wherein an inner circumferential surface of the base circular part is used as a bearing hole; and a bearing unit configured to rotatably support the hub relative to the base plate, the bearing unit being inserted in the bearing hole, the bearing unit including: a shaft housing member, joined to the hub, having a through-hole in a center; a shaft having a smaller diameter section housed in the through-hole and a larger diameter section, an outer diameter of the larger diameter section is larger than an outer diameter of the smaller diameter section wherein the larger diameter section projects from the shaft housing member; a radial dynamic pressure groove provided on at least one of an inner circumferential surface of the through-hole and an outer circumferential surface of the shaft; and a lubricant agent present in between the through-hole and the shaft, wherein an opening of the bearing hole is formed such that an inner diameter of the opening is larger than the outer diameter of the larger diameter section, and such that the larger diameter section is fixed by a hardening resin present in the bearing hole.