.687 - .937 Diameter Drill Mills

  • 1 Flute Effective Center Cutting Endmills

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  • - Cuts a flat bottom within .001
  • - Uses the same insert in both pockets
  • - Center cutting
  • - Drill from solid or ramp into a part at any angle
  • - Ideal for pocket milling
  • - Drilling shallow depth flat bottom holes
  • - 4 cutting edges per insert
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Tool Info.
.687 - .937 Dia. Drill Mills
Tool # D Inserts L L-1 B S Positive Top
Insert
Chipbreaker
Inserts
Screw Wrench
DM-687 .687 2 3.000 .970 .235 .750 SPEB-221P SPEB-221CB 314T T-8
DM-718 .718 2 3.000 1.000 .235 .750
DM-750 * .750 1 3.000 1.000 .340 .750 SPEB-322P SPEB-322CB 414T T-10
XDM-750 * .750 1 4.250 1.500 .340 .750
DM-752 .750 2 3.000 1.000 .235 .750 SPEB-221P SPEB-221CB 314T T-8
XDM-752 .750 2 4.250 1.500 .235 .750
DM-781 .781 2 3.000 1.000 .235 .750
DM-812 .812 2 3.000 1.000 .280 .750 SPEB-2522P SPEB-2522CB 314T T-8
DM-875 .875 2 3.000 1.000 .280 .750
DM-937 .937 2 3.250 1.250 .280 .750
* Single Insert Tool Design

Insert Info. 

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Chipbreaker Insert Info.
.687 - .937 Dia. Drill Mills
Insert # I.C. T R Grades
SPEB-221CB .250 .125 .015 K11 / K22
SPEB-2522CB .312 .125 .031 K11 / X40
SPEB-322CB .375 .125 .031 K11 / X40
Use Chipbreaker Inserts for Drilling, Plunging & Counterboring
K-Tool, Inc.  Positive Top Insert Illustration
Positive Top Insert Info.
.687 - .937 Dia. Drill Mills
Insert # I.C. T R Grades
SPEB-221P .250 .125 .015 K11
SPEB-2522P .312 .125 .031 B1M / C55 / K11 / X40
SPEB-322P .375 .125 .031 B1M / D66 / K11 / X40
Use Positive Top Inserts for Milling, Ramping & Interpolating

Technical Data

Speed and Feed Info.
.687 - .937 Dia. Drill Mills
Material S.F.M. Drilling
I.P.R.
Milling
I.P.R.
Mild & Low Carbon Steel
Ex. 1018, 1020, 1117, 1141, 12L14
800 - 1200 .002 - .004 .002 - .004
High Carbon & Alloy Steel
Ex. 1045, 4140, 4340, 52100, 8620
500 - 800 .002 - .003 .002 - .004
Lower Carbon Tool Steel
Ex. P-20, H-13, S-7
400 - 700 .002 - .003 .002 - .004
Tool Steel
Ex. A-2, A-6, D-2, M-2
300 - 600 .001 - .003 .002 - .004
Stainless Steel
Ex. 304, 316, 420, 15-5PH, 17-4PH
300 - 600 .001 - .003 .002 - .004
Iron
Ex. Cast, Ductile, Nodular
600 - 1000 .002 - .005 .002 - .005
Nickel & Titanium Alloy
Ex. Inconel, Hastelloy, TI-6AL-4V
120 - 180 .001 - .002 .001 - .002
Non-Ferrous
Ex. Aluminum, Bronze, Brass
1000 - 2500 .003 - .006 .002 - .004
Insert Grade Selection
.687 - .937 Dia. Drill Mills
Material Material Examples Preferred Grade
MIld & Low Carbon Steels 1018, 1020, 1117, 1141, 12L14 K11
High Carbon & Alloy Steels 1045, 4140, 4340, 52100, 8620 K11
Lower Carbon Tool Steels P-20, H-13, S-7 K11
Tool Steels A-2, A-6, D-2, M-2 K11
Stainless Steels 303, 304, 316, 420, 15-5PH, 17-4PH K11
Iron Cast, Nodular D66 or C55 / K11
Iron Ductile K11
Nickel & Titanium Alloys Inconel, Hastelloy, TI-6AL-4V K11
Non-Ferrous Metals Aluminum, Bronze, Brass K22 or X40 / B1M / K11
Insert Grade Description
Grade Description
B1M Uncoated Carbide - No Hone
C55 Advanced Multi-Layer PVD Coated Carbide
D66 Multi-Layer Dense Coating
K11 Universal High Performance Dense Coating
K22 Ultra Smooth Dense Coating - No Hone
X40 Extremely Smooth Boride Coating / Periphery Ground
**C55 will be replaced with D66 as inventory runs out **
**X40 will be replaced with K22 as inventory runs out **
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