ATA International Product Catalogue

306497 201755 307415 306497 201755 403045 1441 ap ae ap ae ap = 2×D ae = 0.02×D ap = 1×D ae = 1×D Countersink  Z-value Z-value Z-value Z-value Z-value Z-value Z-value Z-value Z-value d1  31.0  25.0  20.5  16.5  15.0  12.4  10.4  8.3  6.3 * d3 4.2 (-0.2) 3.8 (-0.2) 3.5 (-0.2) 3.2 (-0.2) 3.2 (-0.2) 2.8 (-0.2) 2.5 (-0.2) 2.0 (-0.2) 1.5 (-0.2) 4 mm 0 -0.15 -0.3 -0.45 -0.45 -0.65 -0.8 -1.05 -1.3 6 mm -0.95 -1.15 -1.3 -1.45 -1.45 -1.65 -1.8 -2.05 -2.3 8 mm -1.95 -2.15 -2.3 -2.45 -2.45 -2.65 -2.8 -3.05 10 mm -2.95 -3.15 -3.3 -3.45 -3.45 -3.65 -3.8 12 mm -3.95 -4.15 -4.3 -4.45 -4.45 -4.65 14 mm 4.95 -5.15 -5.3 -5.45 -5.45 16 mm -5.95 -6.15 -6.3 -6.35 20 mm -7.95 -8.15 -8.3 24 mm -9.95 -10.15 30 mm -12.95 All Z dimensions middle tolerance Counter bore depth calculated on the adjustment device or finished counter bore radius minus radius d3 = counter bored depth (not retro- ground counter borer) * d3 information including finishing tolerance. Not suitable for 3 jaw chucks! Workpiece material Material group cutting speed Vc (m/min) feed f (mm/rev) for countersinker  <6 8-12.4 16.5-31 Workpiece material 45 - 75 0.03 - 0.08 0.08 - 0.10 0.10 - 0.20 Steel up to 500 N/mm 2 45 - 75 0.03 - 0.08 0.08 - 0.10 0.10 - 0.20 Steel up to 800 N/mm 2 30 - 45 0.02 - 0.05 0.04 - 0.08 0.08 - 0.10 Steel over 800 N/mm 2 22 - 40 0.02 - 0.05 0.04 - 0.08 0.08 - 0.10 Stainless steel 12 - 24 0.02 - 0.04 0.03 - 0.06 0.06 - 0.08 Heat resisting steel 22 - 45 0.04 - 0.08 0.08 - 0.12 0.12 - 0.16 Cast iron, malleable cast iron 25 - 45 0.03 - 0.07 0.05 - 0.1 0.1 - 0.15 HHC < 65 HRC 75 - 150 0.04 - 0.10 0.10 - 0.20 0.16 - 0.25 Aluminium, alu. alloy over 80 HB 38 - 75 0.04 - 0.08 0.08 - 0.12 0.12 - 0.16 Brass, bronze, copper, leaded bronze all 38 - 75 0.03 - 0.08 0.08 - 0.12 0.12 - 0.20 Plastics Material group < 700 N/mm 2 4.1 < 700 N/mm 2 4.2 < 1100 N/mm 2 d1 Vc mm/ min fz/mm Vc mm/ min fz/mm Vc mm/ min fz/mm 3.0 130 0.020 120 0.020 100 0.020 4.0 130 0.020 120 0.020 100 0.020 5.0 130 0.020 120 0.020 100 0.020 6.0 130 0.030 120 0.030 100 0.030 8.0 130 0.040 120 0.040 100 0.040 10.0 130 0.050 120 0.050 100 0.050 12.0 130 0.060 120 0.060 100 0.060 16.0 130 0.080 120 0.080 100 0.080 20.0 130 0.100 120 0.100 100 0.100 Tables for determination of the counter bore depth for calculating cone counter borer on CNC processing machines Cutting data for solid carbide countersinks Recommended cutting data for Karnasch · high performance stainless steel end mills 1.1 - 1.2 1.3 - 1.4 1.5 2.1-2.2-2.3-2.4 1.6 7.1-7.2-7.3 8.1-8.2 9.1-9.2 10.1-10.2-10.3 11.1-11.2-11.3-11.4 11 Index 10 9 OIL 8 7 6 5 4 3 2 1