Flat Bottom Drills MDF-H Type (Internal Coolant Supply)
Recommended Cutting Conditions for 3D
1. The recommended hole depth is 3 x DC. The depth is measured from the highest point of the hole when drilling in inclined surfaces. 2. The recommended cutting conditions are those for drilling in flat horizontal surfaces. 3. Adjust the feed rate according to the inclination angle when drilling in an inclined surface. 4. Set the feed rate at 70% or lower when the inclination angle is 30° or less.
5. Set the feed rate at 50% or lower when the inclination angle is larger than 30°. 6. This product is a drilling tool. Do not use it for traverse cutting or helical milling. 7. A prepared hole with the same diameter is recommended for machining of stainless steel.
( v c : Cutting Speed (m/min), f : Feed Rate (mm/rev))
Dia. DC (mm)
Cutting Conditions
Mild Steel/General Steel (up to 250HB)
Alloy Steel (up to 300HB)
Hardened Steel (up to HRC50)
Stainless Steel (up to 200HB)
Gray Cast Iron FC250
Ductile Cast Iron FCD450
Aluminum Alloy
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
65 - 75 - 85
90 - 120 - 150
v c
ø4
f 0.06 - 0.08 - 0.10 0.05 - 0.08 - 0.10 0.01 - 0.02 - 0.03 0.01 - 0.02 - 0.03 0.06 - 0.08 - 0.10 0.04 - 0.06 - 0.08 0.06 - 0.08 - 0.10
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
70 - 80 - 90
90 - 120 - 150
v c
ø6
f 0.05 - 0.10 - 0.15 0.05 - 0.10 - 0.15 0.04 - 0.06 - 0.08 0.03 - 0.04 - 0.05 0.05 - 0.10 - 0.15 0.06 - 0.09 - 0.12 0.05 - 0.10 - 0.15
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70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
70 - 80 - 90
90 - 120 - 150
v c
ø8
f 0.10 - 0.15 - 0.20 0.10 - 0.15 - 0.20 0.06 - 0.08 - 0.10 0.04 - 0.06 - 0.08 0.10 - 0.15 - 0.20 0.10 - 0.12 - 0.15 0.10 - 0.15 - 0.20
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
70 - 80 - 90
90 - 120 - 150
v c
ø10
f 0.12 - 0.17 - 0.22 0.12 - 0.17 - 0.22 0.08 - 0.10 - 0.12 0.06 - 0.08 - 0.10 0.12 - 0.17 - 0.22 0.12 - 0.15 - 0.18 0.15 - 0.20 - 0.25
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
70 - 80 - 90
90 - 120 - 150
v c
ø12
f 0.15 - 0.20 - 0.25 0.15 - 0.20 - 0.25 0.12 - 0.15 - 0.18 0.08 - 0.10 - 0.12 0.15 - 0.20 - 0.25 0.15 - 0.18 - 0.20 0.20 - 0.25 - 0.30
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
70 - 80 - 90
90 - 120 - 150
v c
ø16
f 0.15 - 0.20 - 0.25 0.15 - 0.20 - 0.25 0.12 - 0.15 - 0.18 0.10 - 0.15 - 0.20 0.17 - 0.22 - 0.27 0.15 - 0.20 - 0.25 0.25 - 0.30 - 0.40 Min. - Optimum - Max.
Recommended Cutting Conditions for 5D
1. A prepared hole with the same diameter is needed for machining with this tool. 2. A prepared hole with the same diameter is recommended for the cutting conditions.
3. The recommended hole depth is 5 x DC. The depth is measured from the highest point of the hole when drilling in inclined surfaces. 4. This product is a drilling tool. Do not use it for traverse cutting or helical milling.
( v c : Cutting Speed (m/min), f : Feed Rate (mm/rev))
Dia. DC (mm)
Cutting Conditions
Mild Steel/General Steel (up to 250HB)
Alloy Steel (up to 300HB)
Hardened Steel (up to HRC50)
Stainless Steel (up to 200HB)
Gray Cast Iron FC250
Ductile Cast Iron FCD450
Aluminum Alloy
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
65 - 75 - 85
90 - 120 - 150
v c
ø4
f 0.06 - 0.08 - 0.10 0.05 - 0.08 - 0.10 0.01 - 0.02 - 0.03 0.01 - 0.02 - 0.03 0.06 - 0.08 - 0.10 0.04 - 0.06 - 0.08 0.06 - 0.08 - 0.10
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
65 - 75 - 85
90 - 120 - 150
v c
ø6
f 0.05 - 0.10 - 0.15 0.05 - 0.10 - 0.15 0.04 - 0.06 - 0.08 0.03 - 0.04 - 0.05 0.05 - 0.10 - 0.15 0.06 - 0.09 - 0.12 0.05 - 0.10 - 0.15
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
65 - 75 - 85
90 - 120 - 150
v c
ø8
f 0.10 - 0.15 - 0.20 0.10 - 0.15 - 0.20 0.06 - 0.08 - 0.10 0.04 - 0.06 - 0.08 0.10 - 0.15 - 0.20 0.10 - 0.12 - 0.15 0.10 - 0.15 - 0.20
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
65 - 75 - 85
90 - 120 - 150
v c
ø10
f 0.15 - 0.20 - 0.25 0.15 - 0.20 - 0.25 0.08 - 0.10 - 0.12 0.06 - 0.08 - 0.10 0.15 - 0.20 - 0.25 0.12 - 0.15 - 0.18 0.15 - 0.20 - 0.25
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
65 - 75 - 85
90 - 120 - 150
v c
ø12
f 0.20 - 0.25 - 0.30 0.20 - 0.25 - 0.30 0.12 - 0.15 - 0.18 0.08 - 0.10 - 0.12 0.17 - 0.22 - 0.27 0.15 - 0.20 - 0.25 0.20 - 0.25 - 0.30
70 - 85 - 100
60 - 75 - 90
30 - 40 - 50
25 - 35 - 45
70 - 85 - 100
65 - 75 - 85
90 - 120 - 150
v c
ø16
f 0.20 - 0.25 - 0.30 0.20 - 0.25 - 0.30 0.14 - 0.17 - 0.20 0.10 - 0.15 - 0.20 0.20 - 0.25 - 0.30 0.20 - 0.25 - 0.30 0.25 - 0.30 - 0.35 Min. - Optimum - Max.
J54
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