To enlarge the grinding force by reducing the revolving speed of a turntable.

In a disk cleaner device in which a disk 7 is supported on a rotabale turntable 6 and the surface of the disk is ground by the peripheral surface of an abrasive body by rotating the abrasive body with a motor and the turntable is flowingly rotated in accordance with the rotation of the abrasive body, this device is a disk cleaner device having feutures that the device is provided with a leaf spring 185 braking the rotation of the turntable by pressurizing the turntable upward and a braking mechanism 18 capable of adjusting a pressurizing force by the leaf spring.