Patent ID: 6871352

Claim:
A disk apparatus for driving a recording disk medium, comprising: a spindle motor, provided with a rotary shaft; and a chucking table, on which the recording disk medium is mounted, the chucking table including: a support, integrally formed with: a support base, having a supporting face which supports the recording disk medium; a cylindrical bearing part, into which the rotary shaft is fitted, the bearing part extending from the support base in parallel with the rotary shaft; a cover having an engaging piece engaged with the cylindrical bearing part; and an annular abutment part, extended from the support base in parallel with the bearing part, the abutment part being abutted against an inner periphery of the recording disk medium; at least one claw member, provided in an outer periphery of the abutment part; and an urging member, disposed between the claw member and the bearing part so as to urge the claw member outwards in a radial direction of the recording disk medium.