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 L2 L1Ref LRef Designation HSK-A Range D D1 L L1 L2 J HSK A 40 ER25X60 40 1-16 42 32.4 40 60 28 — HSK A 40 ER25X80 40 1-16 42 32.4 80 60 28 M18x1.5 HSK A 40 ER25X100 40 1-16 42 32.4 100 80 28 M16 HSK A 40 ER32X100 40 2-20 50 40.4 100 80 31 M22x1.5 HSK A 50 ER25X80 50 1-16 42 32.4 80 54 28 M16 HSK A 50 ER25X100 50 1-16 42 41.8 100 74 28.5 M16 HSK A 50 ER32X100 50 2-20 50 40.4 100 74 31 M22x1.5 HSK A 50 ER32X120 50 2-20 50 41.8 120 94 35 M22x1.5 HSK A 63 ER25X80 63 1-16 42 — 80 54 — M16 HSK A 63 ER25X100 63 1-16 42 — 100 74 — M16 HSK A 63 ER25X120 63 1-16 42 — 120 94 — M16 HSK A 63 ER25X160 63 1-16 42 — 160 134 — M16 HSK A 63 ER32X80 63 2-20 50 40.4 80 54 31 M22x1.5 HSK A 63 ER32X100 63 2-20 50 — 100 74 — M22x1.5 HSK A 63 ER32X120 63 2-20 50 — 120 94 — M22x1.5 HSK A 63 ER32X140 63 2-20 50 — 140 114 — M22x1.5 HSK A 63 ER32X160 63 2-20 50 — 160 134 — M22x1.5 HSK A 63 ER40X80 63 3-26 63 50.4 80 54 34 — HSK A 63 ER40X100 63 3-26 63 50.4 100 74 34 M28x1.5 HSK A 63 ER40X120 63 3-26 63 50.4 120 94 34 M28x1.5 HSK A 100 ER25X100* 100 1-16 42 — 100 71 — M16 HSK A 100 ER25X120* 100 1-16 42 — 120 91 — M16 HSK A 100 ER25X160* 100 1-16 42 — 160 134 — M16 HSK A 100 ER32X100* 100 2-20 50 — 100 71 — M22x1.5 HSK A 100 ER32X120* 100 2-20 50 — 120 91 — M22x1.5 HSK A 100 ER32X160* 100 2-20 50 — 160 131 — M22x1.5 HSK A 100 ER40X100* 100 3-26 63 — 100 71 — M28x1.5 HSK A 100 ER40X120* 100 3-26 63 — 120 91 — M28x1.5 HSK A 100 ER40X160* 100 3-26 63 — 160 131 — M28x1.5 HSK A 100 ER50X100* 100 10-34 78 — 100 71 — — *Balance to G2.5 12,000 RPM. 750