Our company, Daiyac Corporation, maintains a large stock of collet chucks for automatic lathes. The high volume production and stock maintenance reduces the price of the collect chucks. These cost less than carbide chucks. An automatic lathe integrates collet chucks mounted on the main spindles. The purpose of these parts is to create a strong grip and to rotate workpiece. When applied to sub-spindle, it carries out the re-chucking of the work. The impact of the collet chucks is great on the processing accuracy of a work.