Patent ID: 7873971

Claim:
A motor comprising: a chucking device arranged to hold a disk having a central opening in a detachable manner; a shaft centered on a center axis; a rotor magnet rotatable about the center axis; a rotor holder fixed to the shaft and arranged to hold the rotor magnet; and a stator arranged inside the rotor holder opposite to the rotor magnet, wherein the chucking device includes: a turntable part arranged above the rotor holder, the turntable part having a disk support surface arranged to support the disk; an axially slidable cone part arranged above the turntable part, the cone part having an annular centering surface which slants axially downwardly and radially outwardly and brings a center of the central opening of the disk into alignment with the center axis; a resilient member axially arranged between the turntable part and the cone part to upwardly bias the cone part; and a movement restricting part arranged above the cone part arranged to restrict upward movement of the cone part, wherein the turntable part includes an inner table made of a metal and fixed to the shaft, and an outer table made of a resin material and outside of the inner table, the outer table having the disk support surface, and wherein the outer table is spaced apart from the rotor holder in a position where the inner table and the outer table are fixed to each other.