Dynamic Chip Control

The VariMill Chip Splitters series of end mills delivers excellent chip control allowing the tool to run in longer axial depth of cuts while productively diving into deep pockets in steel, stainless steel and high-temp alloy applications.

The end mill is available in 5- and 7-flute configurations, both of which feature unequal flute spacing for vibration dampening.

The end mill’s key design features are small gashes (chip splitters) along the cutting edge to break the chip into shorter sections without reducing the wall finish. These short chips are easier to evacuate from the cutting area, especially when machining deep cavities. The chip splitter feature can also prevent bird nesting and lessen the potential for tool breakage.

VariMill Chip Splitters Quick Facts Card

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VariMill Chip Splitters (Inch Brochure)

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VariMill Chip Splitters (Metric Brochure)

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    Key Filters
    Workpiece Material
    Workpiece Material
    • P Steel (48)
      • P0
        Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(48)
      • P1
        Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS(48)
      • P2
        Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS(48)
      • P3
        Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS(48)
      • P4
        Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS(48)
      • P5
        Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS(48)
      • P6
        High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS(48)
    • M Stainless Steel (48)
      • M1
        Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS(48)
      • M2
        High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS(48)
      • M3
        Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS(48)
    • K Cast Iron (48)
      • K1
        Gray Cast Iron 120-290 HB; <32 HRC; 125-500 N/mm^2 UTS(48)
      • K2
        Low and Medium Strength CGI and Ductile Irons 130-260 HB; <28 HRC; <600 N/mm^2 UTS(48)
      • K3
        High Strength Ductile and Austempered Ductile Iron 180-350 HB; <43 HRC; >600 N/mm^2 UTS(48)
    • S High-Temp Alloys (48)
      • S1
        Iron-Based, Heat-Resistant Alloys 160-260 HB; 25-48 HRC; 500-1200 N/mm^2 UTS(48)
      • S2
        Cobalt-Based, Heat-Resistant Alloys 250-450 HB; 25-48 HRC; 1000-1450 N/mm^2 UTS(48)
      • S3
        Nickel-Based, Heat Resistant Alloys 160-450 HB; <48 HRC; 600-1700 N/mm^2 UTS(48)
      • S4
        Titanium and Titanium Alloys 300-400 HB; 33-43 HRC; 900-1600 N/mm^2 UTS(48)
    • H Hardened Materials (48)
      • H1
        Hardened Materials 44-48 HRC(48)
      • H2
        Hardened Materials 48-55 HRC(48)
    Applications
    Applications
    • PocketPocket (25)
    • Pocket HelicalPocket Helical (25)
    • Pocket MillingPocket Milling (25)
    • Shoulder MillingShoulder Milling (61)
    • Shoulder RoughingShoulder Roughing (38)
    • Shoulder Square EndShoulder Square End (25)
    • Trochoidal MillingTrochoidal Milling (25)
    Cutting Diameter
    Cutting Diameter
    • 0.315 in(1)
    • 0.394 in(8)
    • 0.473 in(8)
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    • 0.63 in(8)
    • 0.75 in(9)
    • 0.787 in(4)
    • 1.0 in(14)
    Cutting Diameter MintoCutting Diameter Max
    Cutting Diameter
    Cutting Diameter
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    • 12.701 mm(9)
    • 16.0 mm(8)
    • 19.05 mm(9)
    • 20.0 mm(4)
    • 25.401 mm(14)
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    Cutting Length
    • 31.75 mm(2)
    • 32.0 mm(4)
    • 38.1 mm(1)
    • 40.0 mm(4)
    • 42.0 mm(1)
    • 44.45 mm(3)
    • 50.0 mm(4)
    • 50.801 mm(1)
    • 52.0 mm(4)
    • 53.975 mm(2)
    • 57.151 mm(7)
    • 60.0 mm(1)
    • 62.0 mm(4)
    • 63.5 mm(3)
    • 76.2 mm(1)
    • 81.0 mm(4)
    • 88.9 mm(4)
    • 95.25 mm(3)
    • 101.601 mm(1)
    • 105.0 mm(3)
    • 114.301 mm(4)
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    Cutting Length
    Cutting Length
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    • 1.26 in(4)
    • 1.5 in(1)
    • 1.575 in(4)
    • 1.655 in(1)
    • 1.75 in(3)
    • 1.969 in(4)
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    • 3.189 in(4)
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    • 4.0 in(1)
    • 4.134 in(3)
    • 4.5 in(4)
    Cutting Length MintoCutting Length Max
    Reach
    Reach
    • 1.457 in(2)
    • 1.516 in(2)
    • 1.811 in(3)
    • 1.883 in(2)
    • 2.244 in(2)
    • 2.283 in(2)
    • 2.303 in(2)
    • 2.378 in(2)
    • 2.677 in(2)
    • 2.748 in(2)
    • 2.757 in(1)
    • 3.504 in(2)
    • 3.598 in(2)
    • 4.529 in(2)
    • 4.646 in(1)
    Reach MintoReach Max
    Reach
    Reach
    • 37.0 mm(2)
    • 38.5 mm(2)
    • 46.0 mm(3)
    • 47.801 mm(2)
    • 57.0 mm(2)
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    • 58.5 mm(2)
    • 60.401 mm(2)
    • 68.0 mm(2)
    • 69.8 mm(2)
    • 70.0 mm(1)
    • 89.0 mm(2)
    • 91.4 mm(2)
    • 115.0 mm(2)
    • 118.0 mm(1)
    Reach MintoReach Max
    Connection Style
    Connection Style
    • Straight-Cylindrical (45)
    • Weldon (16)
    Number of Flutes
    Number of Flutes
    • 5 (25)
    • 7 (36)
    Internal Coolant Capability
    Internal Coolant Capability
    Over All Length [L]
    Over All Length [L]
    • 3.15 in(4)
    • 3.426 in(1)
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    • 3.938 in(8)
    • 4.0 in(1)
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    • 4.921 in(5)
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    • 5.551 in(4)
    • 6.0 in(1)
    • 6.5 in(4)
    • 6.694 in(3)
    • 7.0 in(4)
    • 7.5 in(4)
    Over All Length [L] MintoOver All Length [L] Max
    Over All Length [L]
    Over All Length [L]
    • 80.0 mm(4)
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    • 88.9 mm(3)
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    • 101.601 mm(1)
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    • 152.4 mm(1)
    • 165.101 mm(4)
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    • 177.8 mm(4)
    • 190.5 mm(4)
    Over All Length [L] MintoOver All Length [L] Max
    Corner configuration
    Corner Radius
    Corner Radius
    • 0.012 in(17)
    • 0.02 in(12)
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    • 0.06 in(9)
    • 0.12 in(5)
    Corner Radius MintoCorner Radius Max
    Corner Radius
    Corner Radius
    • 0.301 mm(17)
    • 0.5 mm(12)
    • 0.75 mm(18)
    • 1.526 mm(9)
    • 3.051 mm(5)
    Corner Radius MintoCorner Radius Max
    Application
    Grade Of Cutting Tool
    Grade Of Cutting Tool
    • WP15PE (25)
    • WS15PE (36)
    Maximum Ramp Angle
    Maximum Ramp Angle
    • 4.0 (48)
    Maximum Ramp Angle MintoMaximum Ramp Angle Max
    Back-End
    Back-End Diameter
    Back-End Diameter
    • 8.0 mm(1)
    • 10.0 mm(8)
    • 12.0 mm(8)
    • 12.701 mm(9)
    • 16.0 mm(8)
    • 19.05 mm(9)
    • 20.0 mm(4)
    • 25.401 mm(14)
    Back-End Diameter MintoBack-End Diameter Max
    Back-End Diameter
    Back-End Diameter
    • 0.315 in(1)
    • 0.394 in(8)
    • 0.473 in(8)
    • 0.5 in(9)
    • 0.63 in(8)
    • 0.75 in(9)
    • 0.787 in(4)
    • 1.0 in(14)
    Back-End Diameter MintoBack-End Diameter Max
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