INTRODUCTION ER - Collet Chuck Features ER-TOP TM NUT Perfect balance and accuracy Exclusive anti-friction mechanism TOOLING SYSTEMS Powerful gripping force, 50-100% higher than conventional design Compact design, standard size, DIN 6499 HARD TOUCH protective coating ER-COOLIT TM JET Ultra precision runout 0.01/ 0.005 Worldwide patented sealing system Collapsibility 1 mm ER-COLLET CHUCK Balance rings Runout O.D. - I.D. Max. 0.003 Mass symmetrical design for high spindle speed from 20,000 RPM Superior surface finish Ra 0.0004 Taper accuracy DIN standard 85% fitness 844 844 ISCAR ISCAR