HSK - ER COLLET CHUCK - METRIC Taper SizeHSK-A 40, 50, 63 & 100 A ➚ A .003 58-60 HRc N5 G2.5 20,000 RPM HSK D J D1 L2Ref L1Ref LRef Designation HSK-A Range D D1 L L1 L2 J HSK A 40 ER16X60 40 0.5-10 28 60 40 M10 HSK A 40 ER16X80 40 0.5-10 28 80 60 M10 HSK A 40 ER16X100 40 0.5-10 28 100 80 M10 HSK A 50 ER16X100 50 0.5-10 28 100 74 M10 HSK A 50 ER16X120 50 0.5-10 28 120 94 M10 HSK A 50 ER20X100 50 1-13 34 100 74 M12 HSK A 50 ER20X120 50 1-13 34 120 94 M12 HSK A 63 ER16X100 63 0.5-10 28 100 74 M10 HSK A 63 ER16X120 63 0.5-10 28 120 94 M10 HSK A 63 ER16X160 63 0.5-10 28 40 160 134 85.6 M10 HSK A 63 ER20X100 63 1-13 34 100 74 M12 HSK A 63 ER20X120 63 1-13 34 120 94 M12 HSK A 63 ER20X160 63 1-13 34 45 160 134 85.0 M12 HSK A 100 ER16X100* 100 0.5-10 28 100 71 M10 HSK A 100 ER16X160* 100 0.5-10 28 40 160 131 85.0 M10 HSK A 100 ER20X100* 100 1-13 34 100 71 M12 HSK A 100 ER20X160* 100 1-13 34 45 160 131 85.0 M12 *Balance to G6.3 12,000 RPM. 749