37.5° Multi-Purpose Chamfer Mills

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  • - Uses High Shear Positive Top Inserts
  • - Free Cutting
  • - Excellent Part Finish
  • - Several Insert Grades Available
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Tool Info.
37.5° Multi-Purpose Chamfer Mills
Tool # Angle Flutes D D-1 D-2 D-3 L L-1 B S Insert Screw Wrench
A-3750 37.5° 2 1.625 1.090 .980 .320 3.250 1.250 .438 .750 SPEB-432PA 638T T-15
A-3775 37.5° 2 2.250 1.420 1.300 .250 3.750 1.500 .688 1.000 SPEB-6352PA 1012T T-25

Insert Info.

K-Tool, Inc.  Positive Top Insert Illustration
Insert Info.
37.5° Multi-Purpose Chamfer Mills
Insert # I.C. T R Grades
SPEB-432PA .500 .187 .031 B1M / D66 / K11 / X40
SPEB-6352PA .750 .220 .031 D66 / K11 / K22

Technical Data

Speed and Feed Info.
Multi-Purpose Chamfer Mill
Material S.F.M. I.P.T.
Mild & Low Carbon Steel
Ex. 1018, 1020, 1117, 1141, 12L14
800 - 1200 .003 - .007
High Carbon & Alloy Steel
Ex. 1045, 4140, 4340, 52100, 8620
500 - 800 .002 - .006
Lower Carbon Tool Steel
Ex. P-20, H-13, S-7
400 - 700 .002 - .006
Tool Steel
Ex. A-2, A-6, D-2, M-2
300 - 600 .002 - .006
Stainless Steel
Ex. 304, 316, 420, 15-5PH, 17-4PH
300 - 600 .002 - .006
Iron
Ex. Cast, Ductile, Nodular
600 - 1000 .004 - .008
Nickel & Titanium Alloy
Ex. Inconel, Hastelloy, TI-6AL-4V
120 - 180 .001 - .003
Non-Ferrous Metal
Ex. Aluminum, Bronze, Brass
1000 - 2500 .004 - .010
Insert Grade Selection
37.5°
Multi-Purpose Chamfer Mills
Material Material Examples Preferred Grade
High & 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 / K11
Iron Ductile K11
Nickel & Titanium Alloys Inconel, Hastelloy, TI-6AL-4V K11
Non-Ferrous Metals Aluminum, Bronze, Brass B1M / K22
Insert Grade Description
Grade Description
B1M Uncoated Carbide - No Hone
D66 Multi-Layer Dense Coating
K11 High Performance Nitride Coating
K22 Ultra Smooth Dense Coating
X40 Extremely Smooth Boride Coating
**X40 will be replaced with K22
as inventory runs out **
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