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Technical Library

Drill Speed & Feed Recommendations

 

Material Speed (S.M.F.) Up to 1/4" Up to 1/2" Up to 1"
Aluminum/Aluminum Alloys 600-1200 .0002-.0020 .0020-.0040 .0060-.0100
Brass/Bronze 200-350 .0005-.0020 .0020-.0030 .0040-.0080
Copper/Copper Alloys 350-900 .0005-.0020 .0020 .0020-.0060
Iron-Cast (soft) 200-500 .0005-.0020 .0020-.0030 .0030-.0080
Iron-Cast (hard) 80-350 .0003-.0008 .0008-.0020 .0020-.0040
Iron-Ductile 80-400 .0002-.0010 .0010-.0020 .0020-.0060
Iron-Malleable 200-600 .0002-.0010 .0010-.0030 .0030-.0070
Magnesium/Magnesium Alloys 800-1400 .0005-.0020 .0020-.0060 .0040-.0100
Monel/High Nickel Steel 150-300 .0002-.0010 .0010-.0020 .0020-.0040
Plastics 600-1200 .0006-.0030 .0030-.0060 .0060-.0150
Plastic-Glass Filled 300-800 .0006-.0030 .0030-.0040 .0040-.0120
Refractory Alloys 80-400 .0002-.0010 .0010 .0010-.0020
Steel-Low Carbon 200-500 .0002-.0010 .0010-.0030 .0030-.0070
Steel-Medium Carbon 100-250 .0004-.0015 .0015-.0020 .0020-.0050
Steel-Hardened 25-120 .0002-.0005 .0005-.0010 .0010-.0030
Steel-Mold 200-350 .0002-.0010 .0010-.0020 .0020-.0060
Steel-Tool 100-300 .0002-.0010 .0010-.0020 .0020-.0060

 

All Design-Rite End Mills Are Center Cutting

  • Lower Radial Width of Cut - Higher range of recommended surface speeds should be used
  • Greater Radial Width of Cut - Lower range of recommended surface speeds should be used
  • For Slotting Applications - Speeds should be reduced by approximately 20% of lowest range value
  • For Peripheral Applications - Axial depth of cut not to exceed 1-1/2 times the cutter diameter
  • Long & X-Long End Mills - Reduce feed per tooth by 50%
  • TiCN & AlTiN Coating - Increase S.F.M. by 25% to 40%

 

S.F.M./R.P.M. Conversion Chart
S.F.M. 1/16 3/32 1/8 5/32 3/16 7/32 1/4 5/16 3/8 7/16 1/2 5/8 3/4 7/8 1
50 3,050 2,040 1,530 1,220 1,020 875 765 610 510 440 380 310 250 220 190
75 4,580 3,060 2,290 1,830 1,530 1,310 1,150 920 760 660 570 460 380 330 285
100 6,100 4,080 3,050 2,450 2,040 1,750 1,530 1,220 1,020 870 760 610 510 440 385
125 7,630 5,100 3,820 3,050 2,550 2,180 1,920 1,530 1,270 1,100 950 770 630 550 475
150 9,150 6,120 4,570 3,670 3,060 2,620 2,290 1,830 1,530 1,310 1,140 920 760 660 575
175 10,680 7,140 5,350 4,270 3,570 3,060 2,680 2,140 1,780 1,540 1,330 1,080 880 770 665
200 12,200 8,150 6,100 4,900 4,070 3,500 3,100 2,450 2,000 1,750 1,500 1,200 1,000 875 750
300 18,500 12,200 9,200 7,300 6,100 5,250 4,600 3,700 3,100 2,600 2,300 1,800 1,500 1,300 1,100
400 24,500 16,300 12,200 9,800 8,150 7,000 6,100 4,900 4,100 3,500 3,050 2,450 2,050 1,750 1,525
500 30,500 20,400 15,300 12,200 10,200 8,700 7,600 6,100 5,100 4,400 3,800 3,100 2,500 2,200 1,900
750 45,800 36,700 22,900 18,300 15,300 13,100 11,500 9,200 7,600 6,550 5,700 4,600 3,800 3,770 2,850
1,000 - 40,800 30,600 24,500 20,400 17,500 15,300 12,200 10,200 8,750 7,650 6,100 5,100 4,400 3,800
1,500 - - 45,900 36,700 30,600 26,200 22,900 18,300 15,300 13,150 11,300 9,200 7,600 6,500 5,700
2,000 - - - 49,000 40,800 35,000 30,600 24,400 20,400 17,500 15,300 12,200 10,200 8,700 7,600
3,000 - - - - - 52,500 45,900 36,600 30,600 26,250 22,900 18,300 15,300 13,100 11,400
4,000 - - - - - - - 48,800 40,800 35,000 30,600 24,400 20,400 17,500 15,200
5,000 - - - - - - - - - 43,700 38,200 30,600 25,500 21,800 19,000

 

 

 
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