Cutters Mill 4-12KT™ • Inch
The Mill 4-12(KT) metric tangential shoulder milling cutters are a fantastic choice for steel and cast-iron roughing and finishing applications. They require up to 15% less horsepower, enabling increased feed rates even on 40 taper machines. With a depth-of-cut range up to .472" (12mm), the Mill 4-12KT can bring new versatility to your shoulder milling applications. The advanced insert/pocket interface ensures stability and consistent performance in difficult applications. Its proprietary designs offer minimal axial runout delivering excellent floor finish. Easy insert indexing through screw clamping.
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Workpiece Material
Workpiece Material
- P Steel (20)
- P0Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(20)
- P1Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(20)
- P2Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(20)
- P3Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(20)
- P4Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(20)
- P5Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(20)
- P6High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(20)
- M Stainless Steel (20)
- M1Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(20)
- M2High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(20)
- M3Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(20)
- K Cast Iron (20)
- K1Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(20)
- K2Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(20)
- K3High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(20)
- S High-Temp Alloys (20)
- S1Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(20)
- S2Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(20)
- S3Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(20)
- S4Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(20)
- H Hardened Materials (20)
- H1Hardened Materials 44-48 HRC(20)
Applications
Applications
Face Milling (20)
Shoulder Milling (20)
Cutting Diameter
Cutting Diameter
- 2.0 in(3)
- 2.5 in(3)
- 3.0 in(3)
- 4.0 in(3)
- 5.0 in(3)
- 6.0 in(3)
- 8.0 in(2)
to
Cutting Diameter
Cutting Diameter
- 50.801 mm(3)
- 63.5 mm(3)
- 76.2 mm(3)
- 101.601 mm(3)
- 127.0 mm(3)
- 152.4 mm(3)
- 203.201 mm(2)
to
Cutting Length
Cutting Length
- 12.125 mm(3)
- 12.15 mm(17)
to
Cutting Length
Cutting Length
- 0.478 in(3)
- 0.479 in(17)
to
Reach
Reach
- 1.5 in(3)
- 1.75 in(6)
- 2.0 in(3)
- 2.375 in(8)
to
Reach
Reach
- 38.1 mm(3)
- 44.45 mm(6)
- 50.801 mm(3)
- 60.325 mm(8)
to
Connection Style
Connection Style
- A-Socket Head Cap Screw (15)
- B-Cutter Retention Screw (3)
- C-Bolt Circle (2)
Number of Flutes
Number of Flutes
- 10 (1)
- 11 (2)
- 12 (2)
- 14 (1)
- 16 (3)
- 18 (1)
- 22 (1)
- 4 (1)
- 5 (2)
- 6 (2)
- 7 (1)
- 8 (2)
- 9 (1)
Over All Length [L]
Over All Length [L]
- 1.5 in(3)
- 1.75 in(6)
- 2.0 in(3)
- 2.375 in(8)
to
Over All Length [L]
Over All Length [L]
- 38.1 mm(3)
- 44.45 mm(6)
- 50.801 mm(3)
- 60.325 mm(8)
to
Corner Radius
Corner Radius
- 0.016 in(20)
- 0.031 in(20)
- 0.047 in(20)
- 0.061 in(20)
- 0.078 in(20)
- 0.094 in(20)
- 0.125 in(20)
to
Corner Radius
Corner Radius
- 0.4 mm(20)
- 0.8 mm(20)
- 1.201 mm(20)
- 1.55 mm(20)
- 1.975 mm(20)
- 2.375 mm(20)
- 3.176 mm(20)
to
Application
Grade Of Cutting Tool
Grade Of Cutting Tool
- KC522M (20)
- KC725M (20)
- KCK15 (20)
- KCK20 (20)
- KCK20B (20)
- KCPK30 (20)
- KCPM40 (20)
- KCSM40 (20)
- X00626 (20)
Maximum Ramp Angle
Maximum Ramp Angle
- 0.008 (2)
- 0.011 (3)
- 0.013 (3)
- 0.016 (3)
- 0.021 (3)
- 0.026 (3)
- 0.041 (3)
to
Front-End
Insert Shape
Insert Shape
- L-RECTANGLE 90 (20)
- L-RECTANGLE ON EDGE 90 (20)
Back-End
Back-End Diameter
Back-End Diameter
- 19.05 mm(3)
- 25.401 mm(6)
- 31.75 mm(3)
- 38.1 mm(3)
- 50.801 mm(3)
- 63.5 mm(2)
to
Back-End Diameter
Back-End Diameter
- 0.75 in(3)
- 1.0 in(6)
- 1.25 in(3)
- 1.5 in(3)
- 2.0 in(3)
- 2.5 in(2)
to
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