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Collet Chucks Collet Pads Selection Chart For Thru-Hole Collet Chucks: Hot Rolled Stock vs. Ground or Cold Rolled Stock If you contemplate using hot rolled bar stock then the Hot Rolled branch should be selected. Drawtube Pull Required vs. Drawtube Push Acceptable Some servo barfeeders require the drawtube to pull when closing the collet chuck. If no barfeeder is involved or the selected barfeeder does not have this requirement, then a collet chuck which closes when the drawtube is pushed forward would be acceptable. Dead Length Required vs. Pull Back Action A collet chuck with Pull Back Action will pull the bar away from the stop in the turret. If inconsistent stock length on a facing cut is unacceptable, or if the barfeed is servo driven, then a dead length collet chuck is indicated. Superior Cincinnati is an industry leader in the design and manufacturing of Collet Chucks, Collet Pads, Feed Finger Pads and workholding accessories. Since 1975 we have provided outstanding quality, value and service to our customers. We continuously strive to meet our customers ever increasing requirements to improve productivity and profits. Superior Cincinnati workholding products come with off-the-shelf delivery for most machine tools. Our national network of distributors, located in all major cities, are ready to serve your workholding needs. Our products are manufactured to the highest quality standards each and every day, priced to save you money and fully guaranteed to your satisfaction. Precision Required vs. Standard Accuracy Select Precision Required where close repeatability is required a distance from the face of the collet chuck. Solid Collet vs. Master Collet with Collet Pads Some collet chucks require the use of a solid collet such as 5C, 16C, 3J or B Style collets. This means that the solid collet must be changed to accommodate different diameters. With a master and pads, the master collet remains in the collet chuck and only the collet pads are c