INTRODUCTION TOOLING SYSTEMS ER - Collet Chuck Features Perfect balance and accuracy Exclusive anti-friction mechanism ER-TOPTM NUT Powerful gripping force, 50-100% higher than conventional design Compact design, standard size, DIN 6499 HARD TOUCH protective coating Ultra precision runout 0.005 mm ER-COOLITTM JET Worldwide patented sealing system Special Corrosion protection Super-finished execution Collapsibility: 0.1 mm ER-COLLET CHUCK Runout O.D. - I.D. Max. 0.003 Two hole for symmetrical design for high spindle speed from 20, 000 RPM Superior surface finish Ra 0.4 Taper accuracy DIN standard Hole for DATA chip 560 ISCAR