Recommended cutting conditions

Workpiece materialHard- nessCuttingconditions n (min-1)Drill dia.DC (mm)marks
(HB)Vc (m/min)ø8ø10ø12ø14ø16ø18ø20ø25Re
f (mm/rev)
Low carbon SS400125120 -180n (min-1)4,780 - 7,1703,820 - 5,7303,180 - 4,7802,730 - 4,0902,390 - 3,5802,120- 3,1801,910 - 2,8701,530- 2,290
steel S10C~S25Cf (mm/rev)0.11 - 0.200.13 - 0.240.14 - 0.280.17 - 0.320.19 - 0.350.23- 0.380.25 - 0.410.30- 0.50
S30C~S58C190100 150n (min-1)3,980 - 5,9703,180 - 4,7802,650 - 3,9802,270 - 3,4101,990 - 2,9901,770- 2,6501,590 - 2,3901,270- 1,910
(Annealed)-f (mm/rev)0.13 - 0.240.15 - 0.290.17 - 0.330.19 - 0.360.22 - 0.410.25- 0.460.28 - 0.480.32- 0.60
Carbon steel25080 -120n (min-1)3,180 - 4,7802,550 - 3,8202,120 - 3,1801,820 - 2,7301,590 - 2,3901,420- 2,1201,270 - 1,9101,020- 1,530
S30C~S58Cf (mm/rev)0.13 - 0.210.15 - 0.250.18 - 0.310.21 - 0.390.23 - 0.450.25- 0.530.28 - 0.610.38- 0.64
(Heat treated)30050 -75n (min-1)1,990 - 2,9901,590 - 2,3901,330 - 1,9901,140 - 1,7101,000 - 1,490880- 1,330800 - 1,190640- 960
f (mm/rev)0.11 - 0.190.12 - 0.230.16 - 0.280.21 - 0.320.23 - 0.350.25- 0.410.28 - 0.410.32- 0.45
Ald18070 95n (min-1)2,790 - 3,7802,230 - 3,0301,860 - 2,5201,590 - 2,1601,390 - 1,8901,240- 1,6801,110 - 1,510890- 1,210
(nneae)-f (mm/rev)0.15 - 0.280.16 - 0.350.21 - 0.370.23 - 0.460.25 - 0.460.25- 0.510.30 - 0.510.35- 0.60
27570 -95n (min-1)2,790 - 3,7802,230 - 3,0301,860 - 2,5201,590 - 2,1601,390 - 1,8901,240- 1,6801,110 - 1,510890- 1,210
All tlf (mm/rev)0.11 - 0.210.14 - 0.250.19 - 0.300.21 - 0.330.23 - 0.370.28- 0.430.28 - 0.460.32- 0.58
oy see Ht ttd30060 90n (min-1)2,390 - 3,5801,910 - 2,8701,590 - 2,3901,360 - 2,0501,190 - 1,7901,060- 1,590960 - 1,430760- 1,150
(ea reae)-f (mm/rev)0.11 - 0.190.12 - 0.230.16 - 0.260.18 - 0.310.21 - 0.330.23- 0.360.25 - 0.380.30- 0.50lant
n (min-1)1,990 - 2,9901,590 - 2,3901,330 - 1,9901,140 - 1,7101,000 - 1,490880- 1,330800 - 1,190640- 960Coo
35050 -70f (mm/rev)0.11 - 0.200.12 - 0.230.16 - 0.250.17 - 0.290.18 - 0.320.20- 0.360.23 - 0.380.28- 0.50
SUS30422060 80n (min-1)2,390 - 3,1801,910 - 2,5501,590 - 2,1201,360 - 1,8201,190 - 1,5901,060- 1,420960 - 1,270760- 1,020
Stil tl SUS316-f (mm/rev)0.11 - 0.190.12 - 0.230.16 - 0.260.18 - 0.310.21 - 0.330.23- 0.360.25 - 0.380.28- 0.42
aness see SUS63030050 70n (min-1)1,990 - 2,7901,590 - 2,2301,330 - 1,8601,140 - 1,5901,000 - 1,390880- 1,240800 - 1,110640- 890
-f (mm/rev)0.11 - 0.200.12 - 0.230.16 - 0.250.17 - 0.290.18 - 0.320.20- 0.360.23 - 0.380.25- 0.40
n (min-1)4,780 - 6,7703,820 - 5,4103,180 - 4,5102,730 - 3,8702,390 - 3,3802,120- 3,0101,910 - 2,7101,530- 2,170
Gray FC150~FC200180120 -170f (mm/rev)0.17 - 0.320.20 - 0.370.23 - 0.430.27 - 0.480.30 - 0.550.33- 0.610.33 - 0.610.40- 0.74
cast iron FC250FC35026090 120n (min-1)3,580 - 4,7802,870 - 3,8202,390 - 3,1802,050 - 2,7301,790 - 2,3901,590- 2,1201,430 - 1,9101,150- 1,530
~-f (mm/rev)0.14 - 0.250.16 - 0.310.19 - 0.350.23 - 0.420.26 - 0.470.28- 0.530.30 - 0.580.36- 0.70
n (min-1)2,390 - 3,5801,910 - 2,8701,590 - 2,3901,360 - 2,0501,190 - 1,7901,060- 1,590960 - 1,430760- 1,150
Nodular cast FCD400~FCD50016060 -90f (mm/rev)0.14 - 0.250.16 - 0.300.19 - 0.350.22 - 0.400.24 - 0.450.28- 0.510.28 - 0.560.34- 0.67
iron FCD600~FCD80025040 -65n (min-1)1,590 - 2,5901,270 - 2,0701,060 - 1,730910 - 1,480800 - 1,290710- 1,150640 - 1,040510- 830
f (mm/rev)0.10 - 0.190.12 - 0.220.14 - 0.250.16 - 0.310.19 - 0.350.23- 0.510.25 - 0.530.30- 0.60

As drilling depth increases (3D 5D 8D), feed rates should be reduced.

Reference charts

Cutting conditions: Workpiece material heat treated steel (Hardness 240HB) Vc = 80 m/min, wet

Required power Torque

100 12.0 90

10.0f=0.45mm/rev 80
70
8.0f=0.45mm/rev
60
6.0f=0.35mm/rev 50
40
4.0
f=0.25mm/rev30f=0.35mm/rev
20
2.0f=0.25mm/rev

f=0.15mm/rev 10 f=0.15mm/rev

Drill dia. DC [mm] Drill dia. DC [mm]