VP ® GDR Premium Powdered Metal High Speed Steel Drills
Titanium Alloy
Hardened Steel
Work Material
Cast Aluminum
30-35 HRC
35-45 HRC
Drilling Speed
230-400 SFM
60-80 SFM
30 - 50 SFM
Drill Dia.
Speed RPM
Feed IPR
Speed RPM
Feed IPR
Speed RPM
Feed IPR
mm Inch 2 -
15,270 0.005-0.007 3300 0.003-0.004 1,940 0.002-0.004 - 10,180 0.008-0.011 2200 0.004-0.005 1,290 0.004-0.005 - 1/8 9,620 0.008-0.012 2080 0.004-0.005 1,220 0.004-0.005 4 - 7,630 0.009-0.015 1650 0.004-0.006 970 0.004-0.006 - 3/16 6,410 0.011-0.016 1390 0.005-0.007 810 0.005-0.007 6 - 5,090 0.013-0.019 1100 0.006-0.008 640 0.005-0.007 - 1/4 4,810 0.013-0.019 1040 0.006-0.008 610 0.005-0.008 8 - 3,820 0.015-0.021 820 0.007-0.010 480 0.006-0.009 - 3/8 3,200 0.017-0.024 690 0.008-0.011 400 0.007-0.011 10 - 3,050 0.018-0.025 660 0.008-0.011 390 0.008-0.011 - 7/16 2,750 0.020-0.028 590 0.009-0.012 350 0.009-0.012 12 - 2,550 0.021-0.030 550 0.009-0.013 320 0.009-0.013 - 1/2 2,400 0.021-0.031 520 0.010-0.014 300 0.010-0.014 14 - 2,180 0.022-0.032 470 0.010-0.015 270 0.011-0.015 - 5/8 1,920 0.023-0.033 420 0.011-0.017 240 0.012-0.016 16 - 1,910 0.024-0.033 410 0.011-0.017 240 0.012-0.017 18 - 1,700 0.025-0.035 370 0.013-0.018 210 0.013-0.019 - 3/4 1,600 0.026-0.037 350 0.013-0.019 200 0.013-0.020 20 - 1,530 0.027-0.039 330 0.014-0.020 190 0.014-0.020 22 - 1,390 0.029-0.042 300 0.015-0.022 170 0.016-0.022 24 - 1,270 0.030-0.044 270 0.016-0.024 160 0.016-0.024 26 - 1,170 0.032-0.047 250 0.017-0.026 150 0.017-0.026 28 - 1,090 0.033-0.050 240 0.019-0.027 140 0.018-0.028 30 - 1,020 0.034-0.052 220 0.020-0.029 130 0.019-0.030 32 - 960 0.035-0.054 210 0.021-0.031 120 0.020-0.031 3
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Drilling Technical
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