30˚ 8° Standard ER Collet Type DIN 6499 A D B L Basic Dimensions Concentricity Tolerances Type A B L mm D mm Standard Precision A A Ultra Precision DIN 6499 ER-11 11.5 18 6 1.0-1.6 0.01 0.005 ER-16 17 27 10 1.6-3.0 0.01 0.005 0.015 ER-20 21 31 16 3.0-6.0 0.01 0.005 0.015 ER-25 26 35 25 6.0-10.0 0.01 0.005 0.015 ER-32 33 40 40 10.0-18.0 0.01 0.005 0.020 ER-40 41 46 50 18.0-26.0 0.01 0.005 0.020 ER-50 52 60 60 26.0-34.0 0.025 ER - Coolit Sealed Collet Two Types ER, SC & SHRINK Collets Sealed Collet Jet Sealed Collet jet2 For straight shank cutting tools With angular double with internal coolant supply. nozzles. Coolant flow is direct to the cutting edge - for use with standard straight shank cutting tools (without coolant hole). Standard Shank for Use in Sealed Collets Plain Shank Weldon/DIN 1835/B Whistle Notch DIN 1835 Form E Note: The front end of the sealed collet should be located beyond the Weldon or the whistle notch. ER32 SPR 15-16 ER32 SPR 16-17 +0.1 +0.1 Lmin Lmin HSK Ø16 HSK Ø16 945