Patent ID: 8810959

Claim:
A rotating device comprising: a rotor rotatable about a rotational axis and including a hub configured to receive a recording disk; and a fixed body, including a base that fixedly supports a bearing unit, configured to rotatably support the rotor via the bearing unit, wherein the fixed body includes a core having a cylindrical part and a plurality of salient poles extending in a radial direction from the cylindrical part; and a ring-shaped member having a core holding part that has an outer peripheral surface having the core fixed thereto, a sloping part extending in a direction inclined by a predetermined angle with respect to the rotational axis of the rotor from a side of the core holding part farther away from the hub, and a support part extending from a side of the sloping part farther away from the hub, wherein the rotor includes a magnet fixedly supported on a surface of the hub on a side of the salient poles, and wherein the sloping part has a thickness smaller than that of the core holding part.