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DRILLING (SOLID CARBIDE) Thinning
MPS
RECOMMENDED CUTTING CONDITIONS
MPS DRILL (3xD, 5xD, 8xD, 12xD)
Drill Diameter & 3.0 & 6.0 & 6.0 & 10.0 & 10.0 & 14.0 & 14.0 & 20.0
Conditions
Work Material Cutting Feed Cutting Feed Cutting Feed Cutting Feed
P Mild Steel Hardness Speed (mm/rev) Speed (mm/rev) Speed (mm/rev) Speed (mm/rev)
(m/min) (m/min) (m/min) (m/min)
< 180HB
110 0.20 130 0.25 150 0.30 160 0.35
(50 120) (0.15 0.25) (80 140) (0.20 0.35) (90 170) (0.20 0.40) (100 180) (0.20 0.40)
Carbon Steel 180 280HB 90 0.20 110 0.25 130 0.25 140 0.30
Alloy Steel 280 350HB (50 100) (0.15 0.25) (70 120) (0.20 0.35) (80 140) (0.20 0.40) (100 150) (0.20 0.40)
M Stainless Steel < 200HB 80 0.20 90 0.25 110 0.25 120 0.30
K Cast Iron (40 90) (0.15 0.30) (60 110) (0.15 0.30) (70 130) (0.15 0.40) (90 140) (0.20 0.40)
< 350N/mm2
Ductile Cast Iron < 450N/mm2 50 0.10 60 0.20 70 0.25 80 0.25
S Heat Resistant Alloy (20 100) (0.05 0.15) (40 120) (0.10 0.25) (50 120) (0.15 0.30) (60 120) (0.15 0.30)
100 0.25 130 0.30 150 0.35 160 0.35
(70 120) (0.15 0.30) (100 140) (0.20 0.35) (110 160) (0.25 0.40) (120 170) (0.25 0.40)
60 0.20 70 0.20 90 0.25 100 0.3
(30 80) (0.15 0.25) (40 90) (0.15 0.30) (50 110) (0.20 0.40) (60 110) (0.20 0.40)
20 0.10 25 0.12 25 0.15 30 0.15
(10 25) (0.05 0.15) (15 30) (0.05 0.15) (15 30) (0.10 0.20) (25 35) (0.10 0.20)
MPS DRILL (l/d=15 30)
Drill Diameter & 3.0& 6.0 & 6.0 & 10.0 & 10.0 & 14.0
Conditions
Work Material Cutting Feed Cutting Feed Cutting Feed
P Mild Steel Hardness Speed (mm/rev) Speed (mm/rev) Speed (mm/rev)
(m/min) (m/min) (m/min)
< 180HB
85 0.20 85 0.25 90 0.30
(35 100) (0.15 0.25) (45 120) (0.15 0.35) (55 120) (0.20 0.35)
DRILLING MPS DRILLS Carbon Steel 180 280HB 80 0.20 90 0.25 90 0.30
Alloy Steel 280 350HB (40 95) (0.15 0.25) (50 120) (0.20 0.35) (60 130) (0.15 0.35)
75 0.15 80 0.20 85 0.25
(35 80) (0.15 0.20) (45 115) (0.15 0.25) (55 115) (0.15 0.30)
M Stainless Steel < 200HB 50 0.10 60 0.12 70 0.15
(20 80) (0.05 0.15) (20 90) (0.05 0.15) (20 90) (0.10 0.20)
K Cast Iron Tensile Strength 70 0.25 75 0.30 80 0.35
< 350N/mm2 (40 85) (0.15 0.30) (50 90) (0.20 0.35) (50 95) (0.20 0.40)
Ductile Cast Iron Tensile Strength 65 0.20 70 0.25 75 0.30
< 450N/mm2 (35 80) (0.15 0.25) (45 85) (0.15 0.30) (45 90) (0.20 0.35)
S Heat Resistant Alloy 20 0.10 25 0.12 25 0.15
(10 25) (0.05 0.15) (15 30) (0.05 0.15) (15 30) (0.10 0.20)
MPS DRILL (l/d=40)
CUTTING Drill Diameter & 3.0& 4.0 & 5.0 & 6.0 & 6.0 & 9.0
DATA
Work Material Conditions Cutting Cutting Cutting
Hardness Speed Feed Speed Feed Speed Feed
(m/min) (mm/rev) (m/min) (mm/rev) (m/min) (mm/rev)
P Mild Steel < 180HB 60 0.18 70 0.20 75 0.25
(50 70) (0.13 0.20) (55 80) (0.15 0.23) (60 85) (0.18 0.28)
Carbon Steel 180 280HB 55 0.15 65 0.18 70 0.23
Alloy Steel 280 350HB (40 65) (0.10 0.18) (45 75) (0.13 0.22) (55 80) (0.15 0.25)
50 0.12 55 0.17 60 0.20
(40 60) (0.08 0.15) (40 65) (0.13 0.20) (40 75) (0.15 0.23)
M Stainless Steel < 200HB 35 0.10 40 0.12 45 0.15
(30 45) (0.07 0.15) (30 50) (0.08 0.15) (30 60) (0.13 0.20)
K Cast Iron < 350N/mm2 55 0.15 60 0.20 60 0.23
Ductile Cast Iron (35 70) (0.10 0.20) (40 65) (0.15 0.23) (45 70) (0.18 0.28)
< 450N/mm2
S Heat Resistant Alloy 45 0.12 50 0.17 55 0.20
(30 60) (0.08 0.15) (40 60) (0.13 0.20) (40 65) (0.15 0.23)
15 0.07 20 0.07 20 0.10
(10 25) (0.05 0.10) (10 25) (0.05 0.10) (10 25) (0.06 0.12)
Machining conditions can vary greatly, please use the above tables as a reference starting point only and adjust the values according to the conditions.
For drill lengths greater than l/d=10 it is recommended to drill a pilot hole.
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