MultiDrill Series MDM Series (Internal Coolant Supply)
MDM Recommended Cutting Conditions - Inch
1. The recommended cutting conditions below are for cases where an internal supply of a water soluble coolant is used. 2. If using non-water soluble coolant, reduce the cutting speed by 20-30% and ensure that sufficient coolant is supplied.
3. When mounting the drill in the collet, make sure that runout around the cutting edge is no greater than 0.02mm. Make sure the flute does not enter the collet. 4. If the workpiece the tool is entering is abnormally shaped (tilted, interrupted etc.), reduce the feed rate to about half when inserting the drill in the workpiece. *If stable machining is still not possible, pre-machining of the flat surface with the MDF Flat MultiDrill is recommended. 5. When performing intermittent through drilling, reduce the feed rate to about half the feed rate used prior to this process.
Ni-Based Heat-Resistant Alloy (Inconel 718)
Titanium Alloy (y-TiAl, & Ti-6Al-4V)
Ferritic/ Martensitic Stainless Steel
Precipitation Hardening
Dia. DC ( in. mm )
Austenitic Stainless Steel
Duplex Stainless Steel (244, 2304, & 2507)
Stainless Steel
(17-4
PH & 15-5 PH)
≤ 200HB > 200HB
> 200HB 200 - 265
<340 HB 165 - 200
<200 HB 265 - 330
<310 HB 260 to 340 HB 38 to 45 HRc
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ø.1181 ø3 65 - 100 IPR .0023 - .0047 .0023 - .0047 .0023 - .0047 .0023 - .0047 .0023 - .0047 .0023 - .0047 .0023 - .0047 .002 - .0031 ø.1575 ø4 SFM 265 - 330 200 - 265 265 - 330 200 - 265 165 - 200 165 - 200 100 - 170 65 - 100 IPR .0031 - .0066 .0031 - .0066 .0031 - .0066 .0031 - .0066 .0031 - .0066 .0031 - .0066 .0031 - .0066 .0023 - .004 ø.1968 ø5 SFM 265 - 330 200 - 265 265 - 330 200 - 265 180 - 200 180 - 200 135 - 170 75 - 115 IPR .0031 - .0078 .0031 - .0078 .0031 - .0078 .0031 - .0078 .0031 - .0078 .0031 - .0078 .0031 - .0078 .0027 - .0047 ø.2362 ø6 SFM 265 - 330 200 - 265 265 - 330 200 - 265 180 - 200 180 - 200 135 - 170 75 - 115 IPR .0039 - .0078 .0039 - .0078 .0039 - .0078 .0039 - .0078 .0039 - .0078 .0039 - .0078 .0039 - .0078 .0031 - .0059 ø.2755 ø7 SFM 265 - 330 200 - 265 265 - 330 200 - 265 180 - 220 180 - 220 135 - 170 85 - 125 IPR .0047 - .009 .0047 - .009 .0047 - .009 .0047 - .009 .0047 - .009 .0047 - .009 .0047 - .009 .0031 - .0059 ø.3149 ø8 SFM 265 - 330 220 - 265 265 - 330 220 - 265 180 - 220 180 - 220 150 - 185 85 - 125 IPR .0047 - .0098 .0047 - .0098 .0047 - .0098 .0047 - .0098 .0047 - .0098 .0047 - .0098 .0047 - .0098 .0039 - .007 ø.3543 ø9 SFM 265 - 330 220 - 265 265 - 330 220 - 265 190 - 220 190 - 220 150 - 185 100 - 135 IPR .0066 - .0098 .0066 - .0098 .0066 - .0098 .0066 - .0098 .0066 - .0098 .0066 - .0098 .0066 - .0098 .0047 - .007 ø.3937 ø10 SFM 265 - 330 220 - 265 265 - 330 220 - 265 190 - 220 190 - 220 150 - 185 100 - 135 IPR .007 - .011 .007 - .011 .007 - .011 .007 - .011 .007 - .011 .007 - .011 .007 - .011 .0047 - .0078 ø.4331 ø11 SFM 265 - 330 220 - 265 265 - 330 220 - 265 190 - 220 190 - 220 150 - 185 100 - 135 IPR .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0059 - .0078 ø.4724 ø12 SFM 265 - 330 220 - 280 265 - 330 220 - 280 190 - 230 190 - 230 150 - 200 100 - 135 IPR .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0059 - .0078 ø.5118 ø13 SFM 265 - 330 220 - 280 265 - 330 220 - 280 190 - 230 190 - 230 150 - 200 110 - 150 IPR .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0059 - .0078 ø.5512 ø14 SFM 265 - 330 220 - 280 265 - 330 220 - 280 190 - 230 190 - 230 150 - 200 110 - 150 IPR .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0059 - .0078 ø.5905 ø15 SFM 265 - 330 220 - 280 265 - 330 220 - 280 190 - 230 190 - 230 150 - 200 110 - 150 IPR .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0059 - .0078 ø.6299 ø16 SFM 265 - 330 220 - 280 265 - 330 220 - 280 190 - 230 190 - 230 150 - 200 110 - 150 IPR .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0078 - .0118 .0059 - .0078 SFM 265 - 330 200 - 265 165 - 200 100 - 170
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