Coated Carbide Drills for Steel & Cast Iron MDH Series ¢ Recommended Cutting Conditions
Mild/Low Carbon Steel A36 / 1015 ~160HB
Carbon Steel 1045 / 1050 ~230HB
Alloy Steel 8620 / 4138 20 to 38 HRC
Gray Cast Iron ~ 280HB
Ductile Cast Iron ~ 270HB
Work Material
Cutting Speed 200 to 550 SFM 200 to 525 SFM
200 to 450 SFM
200 to 475 SFM 200 to 400 SFM
Dia. (Inch / mm ) ø.1181 / ø 3.0 ø.1575 / ø4.0 ø.1968 / ø5.0 ø.2362 / ø6.0 ø.2755 / ø 7.0 ø.3149 / ø 8.0 ø.3543 / ø 9.0 ø.3937 / ø 10.0 ø.4331 / ø 11.0 ø.4724 / ø 12.0 ø.5118 / ø 13.0 ø.5512 / ø 14.0
Feed Rate (IPR)
Feed Rate (IPR)
Feed Rate (IPR)
Feed Rate (IPR)
Feed Rate (IPR)
.0047 to .0118 .0047 to .0118 .0047 to .0118 .0059 to .0138 .0059 to .0138 .0059 to .0138 .0059 to .0138 .0059 to .0138 .0059 to .0157 .0059 to .0138 .0059 to .0138 .0059 to .0138 .0059 to .0138 .0059 to .0177 .0059 to .0138 .0071 to .0157 .0071 to .0157 .0071 to .0157 .0071 to .0197 .0071 to .0157 .0071 to .0177 .0071 to .0177 .0071 to .0177 .0071 to .0216 .0071 to .0177 .0079 to .0197 .0079 to .0197 .0079 to .0177 .0079 to .0236 .0079 to .0197 .0079 to .0197 .0079 to .0197 .0079 to .0177 .0079 to .0236 .0079 to .0197 .0079 to .0197 .0079 to .0197 .0079 to .0177 .0087 to .0255 .0087 to .0216 .0079 to .0216 .0079 to .0216 .0079 to .0197 .0087 to .0255 .0087 to .0216 .0079 to .0216 .0079 to .0216 .0079 to .0197 .0098 to .0275 .0098 to .0236 .0087 to .0236 .0087 to .0236 .0087 to .0216 .0098 to .0275 .0098 to .0236 .0087 to .0236 .0087 to .0236 .0087 to .0216 .0098 to .0295 .0098 to .0255
1. The recommended cutting conditions above are for cases where internal supply of a water-soluble coolant is used. 2. Can also be used for MQL drilling. 3. If using non-water-soluble coolant, reduce the cutting speed and feed rate by 20-30% and ensure that sufficient coolant is supplied. 4. When mounting the drill in the collet, make sure that runout around the cutting edge is no greater than .0008”. 5. Make sure the flute does not enter the collet. 6. If the surface of the workpiece is interrupted, reduce the feed rate to about half when feeding the drill in the workpiece *If stable drilling is still not possible or when drilling on a tilted surface, pre-drilling of a flat surface with an MDF series flat bottom drill is recommended. 7. When performing interrupted through drilling, reduce the feed rate to about half the feed rate used prior to this process. 8. If abnormalities such as noise or vibration occur, change the cutting conditions accordingly.
¢ Application Examples
4320 Alloy Steel Tool Holder
Sumitomo Conventional Tool
Steel 52100 Tooling Component
Sumitomo Conventional Tool
Q
Q
Tool
Tool
MDH1030S12H08
MDH0950S10H05
Lathe
Lathe (Hole drilling depth: 2.000” )
Diameter ( mm )
Diameter ( mm )
ø10.3
ø10.3
ø9.5
ø9.5
L/D
L/D
8
8
5
5
vc (SFM)
vc (SFM)
265
265
330
300
f (IPR)
f (IPR)
.0177
.0138
.0118
.0059
0 1,000 2,000 3,000 4,000
Wet (Water-soluble, Internal Coolant Supply)
Wet (Water-soluble, Internal Coolant Supply)
Wet (Oil-based, Internal Coolant Supply)
Wet (Oil-based, Internal Coolant Supply)
2,500
Coolant
Coolant
2,000
1,500
Approx. 1.3 times the efficiency and 1.35 times the tool life of conventional tools
1,000
Twice the efficiency and at least twice the tool life of conventional tools
Results
Results
500
0
MDH series Conventional Tool
MDH series Conventional Tool
Steel 4135 Ring Gear Vertical Machining Center
Sumitomo Conventional Tool
Steel 52100 Automotive Component
Sumitomo Conventional Tool
Q
Q
Tool
Tool
MDH1350S14H05
MDH0470S06H05
Multi-spindle Lathe
Diameter ( mm )
Diameter ( mm )
ø13.5
ø13.5
ø4.7
ø4.7
L/D
L/D
5
5
5
5
vc (SFM)
vc (SFM)
300
300
105
105
f (IPR)
f (IPR)
.0157
.0079
.0118
.0047
Wet (Internal Coolant Supply)
Wet (Internal Coolant Supply)
Wet (Internal Coolant Supply)
Wet (Internal Coolant Supply)
Coolant
Coolant
Twice the efficiency and tool life of conventional tools
2.5 times the efficiency of conventional tools
Results
Results
After drilling 240 holes
Gray Cast Iron Industrial Machine Component
Sumitomo Conventional Tool
Gray Cast Iron Housing Vertical Machining Center
Sumitomo Conventional Tool
Q
Q
Tool
Tool
Horizontal Machining Center BT50
MDH0510S06H05
MDH0870S10H05
Diameter ( mm )
Diameter ( mm )
ø5.1
ø5.1
ø8.7
ø8.7
L/D
L/D
5
5
5
5
vc (SFM)
vc (SFM)
230
230
280
280
f (IPR)
f (IPR)
.0118
.0079
.0157
.0079
Wet (Water-soluble, External Coolant Supply)
Wet (Water-soluble, External Coolant Supply)
Wet (Water-soluble, Internal Coolant Supply)
Wet (Water-soluble, Internal Coolant Supply)
600
Coolant
Coolant
400
1.5 times the efficiency of conventional tools with the same tool life
Twice the efficiency and 2.5 times the tool life of competitors’ products
200
Results
Results
After drilling 5,100 holes
0
MDH series Conventional Tool
15
Made with FlippingBook flipbook maker