A turnable for mounting an optical disk without the occurrence of eccentricity including: a fixed portion (48) fitted in a center hole of the optical disk; a movable portion (50) fitted in the center hole with the fixed portion (48) as a reference so as to be elastically deformed to correct the eccentricity when the optical disk is mounted; a shaft portion (42) molded integrally with the fixed portion (48) and into which is inserted a drive shaft (14a) of a drive motor for rotating a turntable (12) continuously; and a plate spring (60) for returning, when the optical disk is not mounted, the movable portion (50) from a position when the optical disk is mounted to a position when not mounted. The plate spring (60) is secured to the shaft portion (42) directly.