VP ® GDR Premium Powdered Metal High Speed Steel Drills
List 2000 - VP® GDR
General Drilling Operations
Low Carbon Steels 1010, 1018
Work Material
Carbon Steels 1045, 1050
Alloy Steels 4140, 4330
Tool Steels D2, H13
Cast Iron
Drilling Speed
125-160 SFM
80-120 SFM
80-100 SFM
30-50 SFM
130-200 SFM
Drill Dia.
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
mm Inch 2 -
6,900 0.002-0.004 4,840 0.002-0.004 4,360 0.002-0.004 3300 0.003-0.004 8,000 0.003-0.004 - 4,600 0.004-0.005 3,230 0.004-0.005 2,900 0.004-0.005 2200 0.004-0.005 5,330 0.004-0.006 - 1/8 4,350 0.004-0.005 3,050 0.004-0.005 2,740 0.004-0.005 2080 0.004-0.005 5,030 0.004-0.006 4 - 3,450 0.004-0.006 2,420 0.004-0.006 2,180 0.004-0.006 1650 0.004-0.006 4,000 0.005-0.007 - 3/16 2,900 0.005-0.007 2,030 0.005-0.007 1,830 0.005-0.007 1390 0.005-0.007 3,360 0.006-0.008 6 - 2,300 0.005-0.007 1,610 0.005-0.007 1,450 0.005-0.007 1100 0.006-0.008 2,660 0.007-0.010 - 1/4 2,170 0.005-0.008 1,520 0.005-0.008 1,370 0.005-0.008 1040 0.006-0.008 2,520 0.007-0.010 8 - 1,700 0.006-0.009 1,210 0.006-0.009 1,090 0.006-0.009 820 0.007-0.010 2,000 0.008-0.012 - 3/8 1,450 0.007-0.011 1,010 0.007-0.011 910 0.007-0.011 690 0.008-0.011 1,680 0.009-0.013 10 - 1,380 0.008-0.011 960 0.008-0.011 870 0.008-0.011 660 0.008-0.011 1,600 0.010-0.014 - 7/16 1,240 0.009-0.012 870 0.009-0.012 780 0.009-0.012 590 0.009-0.012 1,440 0.011-0.015 12 - 1,150 0.009-0.013 800 0.009-0.013 720 0.009-0.013 550 0.009-0.013 1,330 0.012-0.017 - 1/2 1,080 0.010-0.014 760 0.010-0.014 680 0.010-0.014 520 0.010-0.014 1,260 0.012-0.017 14 - 980 0.011-0.015 690 0.011-0.015 620 0.011-0.015 470 0.010-0.015 1,140 0.013-0.017 - 5/8 870 0.012-0.016 610 0.012-0.016 550 0.012-0.016 420 0.011-0.017 1,010 0.013-0.018 16 - 860 0.012-0.017 600 0.012-0.017 540 0.012-0.017 410 0.011-0.017 1,000 0.013-0.018 18 - 760 0.013-0.019 540 0.013-0.019 480 0.013-0.019 370 0.013-0.018 890 0.014-0.020 - 3/4 720 0.013-0.020 510 0.013-0.020 450 0.013-0.020 350 0.013-0.019 840 0.015-0.021 20 - 690 0.014-0.020 480 0.014-0.020 430 0.014-0.020 330 0.014-0.020 800 0.016-0.022 22 - 620 0.016-0.022 440 0.016-0.022 400 0.016-0.022 300 0.015-0.022 730 0.017-0.023 24 - 570 0.016-0.024 400 0.016-0.024 370 0.016-0.024 270 0.016-0.024 660 0.018-0.026 26 - 530 0.017-0.026 370 0.017-0.026 340 0.017-0.026 250 0.017-0.026 610 0.019-0.027 28 - 490 0.018-0.028 340 0.018-0.028 320 0.018-0.028 240 0.019-0.027 570 0.020-0.029 30 - 460 0.019-0.030 320 0.019-0.030 300 0.019-0.030 220 0.020-0.029 530 0.021-0.031 32 - 430 0.020-0.031 300 0.020-0.031 280 0.020-0.031 210 0.021-0.031 500 0.023-0.033 1. The indicated speeds and feeds are when water soluble oil is used. 2. With the exception of using milling chucks, pay careful attention to ensure that drill is rigidly clamped and keep deflection at a minimum. 3. In case of drilling depth: >4D, reduce drilling speed as below. 4. When using non-water soluble oil or water-emulsifiable oil (over 10 times dilution), reduce drilling speed by 20%. 5. Step process should be used when drilling depth of the hole exceeds 4 times drill diameter for vertical machines or 3 times drill diameter for horizontal lathe machines. 3
D: Drill Diameter
≤ 5D
Drilling Depth
≤ 6D
Coefficient for reducing RPM
x0.9
x0.7
344
Drilling Technical
osgtool.com
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