Performance Carbide Drills
General Drilling Operations Work Material
Special Alloy Steels, Hardened Steels
Cast Aluminum Copper
Hardness 43-48 HRC Drilling Speed 260- 640 SFM 190-320 SFM 160-240 SFM 110-185 SFM 100-150 SFM 75-100 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 1 - 25,000 0.002-0.003 24,740 0.001-0.002 19,400 0.001-0.002 14,260 0.001-0.002 12,130 0.001-0.001 8,440 0.0005-0.001 - 1/16 25,000 0.002-0.003 15,580 0.001-0.002 12,220 0.001-0.002 8,980 0.001-0.002 7,640 0.001-0.002 5,320 0.0005-0.001 2 - 21,831 0.003-0.004 12,370 0.002-0.003 9,700 0.001-0.003 7,130 0.001-0.003 6,060 0.001-0.002 4,220 0.001-0.001 - 3/32 18,336 0.004-0.005 10,390 0.002-0.004 8,150 0.002-0.004 5,990 0.002-0.003 5,090 0.002-0.003 3,540 0.001-0.002 3 - 14,550 0.004-0.006 8,250 0.003-0.005 6,470 0.002-0.005 4,750 0.002-0.003 4,040 0.002-0.003 2,810 0.001-0.002 - 1/8 13,750 0.005-0.006 7,790 0.003-0.005 6,110 0.003-0.005 4,490 0.003-0.004 3,820 0.003-0.004 2,660 0.002-0.003 4 - 10,920 0.005-0.007 6,180 0.004-0.006 4,850 0.003-0.006 3,560 0.003-0.004 3,030 0.003-0.004 2,110 0.002-0.003 - 3/16 9,170 0.006-0.008 5,190 0.005-0.007 4,070 0.004-0.008 2,990 0.004-0.005 2,550 0.004-0.005 1,770 0.002-0.003 6 - 7,270 0.008-0.010 4,120 0.006-0.008 3,230 0.005-0.009 2,380 0.005-0.006 2,020 0.005-0.006 1,410 0.002-0.004 - 1/4 6,870 0.010-0.012 3,890 0.007-0.009 3,050 0.005-0.010 2,240 0.006-0.007 1,910 0.006-0.007 1,330 0.002-0.004 8 - 5,460 0.012-0.014 3,090 0.008-0.010 2,420 0.006-0.011 1,780 0.006-0.008 1,520 0.006-0.008 1,050 0.003-0.005 - 3/8 4,580 0.013-0.015 2,590 0.009-0.011 2,040 0.007-0.011 1,490 0.007-0.009 1,270 0.007-0.009 880 0.003-0.005 10 - 4,360 0.015-0.017 2,470 0.011-0.013 1,940 0.008-0.012 1,420 0.008-0.010 1,210 0.008-0.010 840 0.004-0.006 - 7/16 3,930 0.016-0.018 2,220 0.012-0.014 1,740 0.008-0.012 1,280 0.008-0.011 1,090 0.009-0.011 760 0.004-0.006 12 - 3,640 0.018-0.020 2,060 0.013-0.015 1,620 0.008-0.012 1,190 0.009-0.012 1,010 0.009-0.012 700 0.005-0.007 - 1/2 3,440 0.019-0.021 1,950 0.014-0.016 1,530 0.009-0.013 1,120 0.010-0.013 950 0.010-0.013 660 0.005-0.007 14 - 3,120 0.021-0.023 1,770 0.016-0.018 1,390 0.009-0.014 1,020 0.011-0.014 860 0.011-0.014 600 0.006-0.008 - 5/8 2,750 0.022-0.026 1,560 0.018-0.020 1,220 0.010-0.014 900 0.012-0.016 760 0.013-0.016 530 0.006-0.008 16 – 2,750 0.022-0.026 1,560 0.018-0.020 1,220 0.010-0.014 900 0.012-0.016 760 0.013-0.016 530 0.006-0.008 18 - 2,420 0.026-0.030 1,370 0.020-0.022 1,080 0.011-0.015 790 0.014-0.018 670 0.015-0.018 470 0.007 -0.009 - 3/4 2,290 0.027-0.031 1,300 0.021-0.023 1,020 0.012-0.015 750 0.015-0.019 640 0.016-0.019 440 0.008-0.010 20 - 2,180 0.028-0.032 1,240 0.022-0.024 970 0.012-0.016 710 0.016-0.020 610 0.016-0.020 420 0.008-0.011 26-30 HRC 30-34 HRC 34-43 HRC
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Drilling Technical
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