•Enlargement of Through hole : Much larger Through Hole is the biggest size in the same grade, which enalbes broader manufacturing such as bar feeder work. •Light Weight : Equipment load has been reduced by weight reduction, and efficiency has been increased for fitful work and for both forward and reverse operations. •Hight Performance and High Accuracy : It has the same structure as CAH power chuck, and has excellent performance and quality. Attachment part and changable parts are compatible each other. •Spindle Direct-Mounting Type : International standard A-type spindle specification is applied to CGHA type, so that it can be directyly attached to short taper spindle.