List 1900 - VPH GDS: Stub List 1950 - VPH GDR: Jobbers VPH Premium Powdered Metal High Speed Steel Drills
General Drilling Operations
Low Carbon Steels 1010, 1018
Work Material
Carbon Steels 1045, 1050
Alloy Steels 4140, 4330
Tool Steels D2, H13
Stainless Steels 400SS, 17-4PH
Cast Iron
Drilling Speed 125-160 SFM 80-120 SFM
80-100 SFM
30-50 SFM
40-60 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
Speed RPM
Feed IPR
mm Inch 0.5 -
25,000 0.001-0.002 19,410 0.001-0.002 17,470 0.001-0.002 7,760 0.001-0.002 9,700 0.001 25,000 0.001-0.002 - 3/64 11,610 0.001-0.003 8,150 0.002-0.003 7,330 0.002-0.003 3,260 0.002-0.003 4,070 0.001-0.002 13,450 0.002-0.003 2 - 6,910 0.002-0.004 4,850 0.002-0.004 4,370 0.002-0.004 1,940 0.002-0.004 2,430 0.001-0.002 8,000 0.003-0.004 - 3/32 5,810 0.003-0.005 4,070 0.003-0.005 3,670 0.003-0.005 1,630 0.003-0.005 2,040 0.001-0.003 6,720 0.003-0.005 3 - 4,610 0.003-0.005 3,230 0.003-0.005 2,910 0.003-0.005 1,290 0.003-0.005 1,620 0.001-0.003 5,340 0.004-0.006 - 1/8 4,350 0.003-0.005 3,060 0.003-0.005 2,750 0.003-0.005 1,220 0.003-0.005 1,530 0.001-0.003 5,040 0.004-0.006 4 - 3,460 0.004-0.006 2,430 0.004-0.006 2,180 0.004-0.006 970 0.004-0.006 1,210 0.002-0.004 4,000 0.005-0.007 - 3/16 2,900 0.005-0.007 2,040 0.005-0.007 1,830 0.005-0.007 810 0.005-0.007 1,020 0.002-0.005 3,360 0.006-0.008 6 - 2,300 0.005-0.007 1,620 0.005-0.007 1,460 0.005-0.007 650 0.005-0.007 810 0.002-0.006 2,670 0.007-0.010 - 1/4 2,180 0.005-0.008 1,530 0.005-0.008 1,380 0.005-0.008 610 0.005-0.008 760 0.002-0.006 2,520 0.007-0.010 8 - 1,730 0.006-0.009 1,210 0.006-0.009 1,090 0.006-0.009 490 0.006-0.009 610 0.003-0.008 2,000 0.008-0.012 - 3/8 1,450 0.008-0.011 1,020 0.008-0.011 920 0.008-0.011 410 0.008-0.011 510 0.004-0.009 1,680 0.010-0.013 10 - 1,380 0.008-0.011 970 0.008-0.011 870 0.008-0.011 390 0.008-0.011 490 0.004-0.010 1,600 0.010-0.014 - 7/16 1,240 0.009-0.012 870 0.009-0.012 790 0.009-0.012 350 0.009-0.012 440 0.004-0.011 1,440 0.011-0.016 12 - 1,150 0.009-0.013 810 0.009-0.013 730 0.009-0.013 320 0.009-0.013 400 0.005-0.012 1,330 0.012-0.017 - 1/2 1,090 0.010-0.014 760 0.010-0.014 690 0.010-0.014 310 0.010-0.014 380 0.005-0.013 1,260 0.012-0.017 14 - 990 0.011-0.014 690 0.011-0.014 620 0.011-0.014 280 0.011-0.014 350 0.005-0.014 1,140 0.014-0.019 - 5/8 870 0.012-0.016 610 0.012-0.016 550 0.012-0.016 240 0.012-0.016 310 0.006-0.016 1,010 0.016-0.021 16 – 870 0.012-0.016 610 0.012-0.016 550 0.012-0.016 240 0.012-0.016 310 0.006-0.016 1,010 0.016-0.021 18 - 770 0.014-0.018 540 0.014-0.018 490 0.014-0.018 220 0.014-0.018 270 0.007-0.018 890 0.018-0.025 - 3/4 730 0.015-0.019 510 0.015-0.019 460 0.015-0.019 200 0.015-0.019 250 0.007-0.019 840 0.019-0.026 20 - 690 0.016-0.020 490 0.016-0.020 440 0.016-0.020 190 0.016-0.020 240 0.008-0.020 800 0.020-0.027 1. The indicated speeds and feeds are when water soluble oil is used. 2. Suitable cutting fluid is water-emulsifiable, high density oil (less than 20 times dilution).
3. When using non-water soluble oil or water-emulsifiable oil (over 20 times dilution), reduce drilling speed by 20%. 4. Pecking is necessary when drilling depth of the hole exceeds 3 times drill diameter for lathe/horizontal machines.
D: Drill Diameter
≤ 5D
Drilling Depth
≤ 4D
≤ 6D
Coefficient for reducing RPM
x0.9
x0.8
x0.75
342
Drilling Technical
osgtool.com
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