DISK CHUCKING DEVICE

PROBLEM TO BE SOLVED: To accurately center a disk to a turntable, and to easily detach the disk from the turntable. SOLUTION: A centering part 21 provided in a centering member 20 and a lower surface side of a center hole 1a of a disk 1 are abutted on the midway of loading the disk 1 on a turntable 10, the disk 1 is loaded on the turntable 10, and even when the disk is pressed to the turntable 10 by a holding member 30, the centering part 21 keeps pressing the rear surface side of the center hole 1a of the disk 1 by a first elastic member 41, and thus accurate centering is carried out irrespective of variance in the diameter of the center hole 1a of the disk 1.