A 0.005 A 58-60 HRc 1 2 ST-ER L 2 L CSI T DIN 6499 ER Collet Chucks L A with Straight Shanks SS D 3 D 3 d min max A J J A - A T kg Designation SS CSI d min d max L 2 L J D 3 T Fig. ST 16X 50 ER11 F (1) 16 ER11 0.5 7.0 50.00 18.50 M8 19.00 13.0 1 0.06 ST 20X 50 ER11 F (1) 20 ER11 0.5 7.0 50.00 18.50 M10 19.00 17.0 1 0.10 ST 20X100 ER11 20 ER11 0.5 7.0 100.00 18.50 M10 19.00 17.0 1 0.20 ST 20X150 ER11 20 ER11 0.5 7.0 150.00 18.50 M10 19.00 17.0 1 0.25 ST 20X 50 ER16 F (1) 20 ER16 0.5 10.0 50.00 32.30 M12 28.00 19.0 1 0.07 ST 20X100 ER16 20 ER16 0.5 10.0 100.00 30.00 M12 28.00 19.0 1 0.20 ST 20X100 ER16 F (1) 20 ER16 0.5 10.0 100.00 30.00 M12 28.00 19.0 1 0.25 ST 20X150 ER16 20 ER16 0.5 10.0 150.00 30.00 M12 28.00 19.0 1 0.28 ST 20X 50 ER20 F (1) 20 ER20 1.0 13.0 50.00 42.50 M12 34.00 22.0 1 0.15 ST 25X100 ER20 25 ER20 1.0 13.0 100.00 36.00 M16 34.00 22.0 1 0.30 Straight & VDI Shanks ST 25X150 ER20 25 ER20 1.0 13.0 150.00 36.00 M16 34.00 22.0 1 0.39 ST 20X 50 ER25 F (1) 20 ER25 1.0 16.0 50.00 46.00 M12 42.00 28.0 2 0.34 ST 20X100 ER25 20 ER25 1.0 16.0 100.00 46.00 M12 42.00 28.0 2 0.29 ST 20X100 ER25 F (1) 20 ER25 1.0 16.0 100.00 46.00 M12 42.00 28.0 2 0.09 ST 25X 50 ER25 F (1) 25 ER25 1.0 16.0 50.00 46.00 M16 42.00 28.0 2 0.22 ST 25X100 ER25 25 ER25 1.0 16.0 100.00 46.00 M16 42.00 28.0 2 0.36 ST 20X 50 ER32 F (1) 20 ER32 2.0 20.0 50.00 54.00 M12 50.00 36.0 2 0.30 ST 20X100 ER32 20 ER32 2.0 20.0 100.00 54.00 M12 50.00 36.0 2 0.40 ST 25X 50 ER32 F (1) 25 ER32 2.0 20.0 50.00 52.00 M16X2 50.00 36.0 2 0.32 ST 30X 50 ER32 F (1) 30 ER32 2.0 20.0 50.00 52.00 M18X1.5 50.00 36.0 2 0.39 ST 32X 50 ER32 F (1) 32 ER32 2.0 20.0 50.00 52.00 M18X1.5 50.00 36.0 2 0.42 ST 32X150 ER32 32 ER32 2.0 20.0 150.00 52.00 M18X1.5 50.00 36.0 2 0.88 ST 40X 75 ER32 F (1) 40 ER32 2.0 20.0 75.00 46.00 M22X1.5 50.00 44.0 2 0.72 ST 25X 50 ER40 F (1) 25 ER40 3.0 26.0 50.00 60.00 M16X2 63.00 45.0 2 0.52 ST 30X 50 ER40 F (1) 30 ER40 3.0 26.0 50.00 60.00 M18X1.5 63.00 45.0 2 0.57 ST 32X 50 ER40 F (1) 32 ER40 3.0 26.0 50.00 60.00 M18X1.5 63.00 45.0 2 0.80 ST 40X 75 ER40 F (1) 40 ER40 3.0 26.0 75.00 55.00 M22X1.5 63.00 45.0 2 0.94 ST 50X 80 ER40 F (1) 50 ER40 3.0 26.0 80.00 60.00 M28X1.5 63.00 54.0 2 1.30 ST 50X 80 ER50 F (1) 50 ER50 10.0 34.0 80.00 77.00 M36X1.5 78.00 58.0 2 1.32 (1) With a clamping flat. 947-950 979-980 981 980 944-946 SETS A 0.005 A CSI KIT ST-ER A d range Contains 1 ER Collet Chuck with SS * 46-48 HRc a Cylindrical Shank and a Set of ** 58-60 HRc Collets in Various Bore Sizes A A - A Designation SS CSI d Range Qty KIT ST16X50 7 ER11 F 16 ER11 0.5-7 7 KIT ST20X100 7 ER11 20 ER11 0.5-7 7 KIT ST20X150 7 ER11 20 ER11 0.5-7 7 KIT ST20X50 10 ER16 F 20 ER16 0.5-10 10 KIT ST20X100 10 ER16 20 ER16 0.5-10 10 KIT ST20X150 10 ER16 20 ER16 0.5-10 10 KIT ST20X50 12 ER20 F 20 ER20 1.0-12 12 KIT ST25X100 12 ER20 25 ER20 1.0-12 12 KIT ST25X150 ER20 25 ER20 1.0-12 12 • Each kit contains one collet chuck, a full set of ER collets and a wrench. • F suffix indicates a flat on the shank. * Collet ** Toolholder 921