PURPOSE: A disk loading device is provided to prevent interference or collision between components between a pickup up and the disk loading device. CONSTITUTION: A large diameter loading lever(50) is moved by a pair of guide arms. A slide cam unit(60) is moved by a small diameter loading lever of the large diameter loading lever. A chuck unit(70) is installed between the guide arms and a disc selecting unit. The chuck unit is operated by the slide cam unit. The chuck unit fixes a disc.
