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.

Dynamic

Evacuate chips in dynamic milling operations with complex toolpaths. While our Chip Splitters end mills were designed for aerospace industry needs, they are applicable for all customers requiring dynamic milling strategies to increase tool life on difficult-to-machine materials.

Efficient

Utilize full feed rate machine capabilities with the 5- and 7-flute configurations. Dynamic milling processes are typically run using a low value of radial engagement, which generate a thin chip thickness, allowing higher feedrate-per-tooth values and a high MRR.

Steady

No more machine downtime due to tool breakages and bad chip formation. VariMill Chip Splitters will keep running while effortlessly ripping chips.

VariMill Chip Splitters (5-Flute)

VariMill Chip Splitter 5-Flute End Mill

Available in both metric and inch standard diameters:

  • Real 3xD, 5xD Ap1 max supports use of the whole tool with high engagement—especially critical for dynamic milling operations
  • 5-flute geometry designed for steel, stainless steel and high-temperature alloys.
  • Suggested applications with 5-flute end mill: helical milling, trochoidal milling, side milling, shoulder milling, pocket milling
VariMill Chip Splitters (7-Flute)

VariMill Chip Splitter 7-Flute End Mill

Available in both metric and inch standard diameters:

  • Real 3xD, 5xD Ap1 max supports use of the whole tool with high engagement—especially critical for dynamic milling operations
  • 7-flute geometry primarily designed for use on high-temp alloys, use on steel, stainless steel 
  • Suggested applications with 7-flute end mill: shoulder milling, trochoidal milling

Additional Resources

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  • P Steel (49)
    • P0
      Low-Carbon Steels, Long Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (49)
    • P1
      Low-Carbon Steels, Short Chipping C < .25%; <125 HB; <530 N/mm^2 UTS (49)
    • P2
      Medium and High Carbon Steels C < .25%; <220 HB; <25 HRC; >530 N/mm^2 UTS (49)
    • P3
      Alloy Steels & Tool Steels C > .25%; <330 HB; <35 HRC; 600-850 N/mm^2 UTS (49)
    • P4
      Alloy Steels & Tool Steels C > .25%; 350-420 HB; 35-43 HRC; 850-1400 N/mm^2 UTS (49)
    • P5
      Ferritic, Martensitic, and PH Stainless Steels <330 HB; <35 HRC; 600-900 N/mm^2 UTS (49)
    • P6
      High Strength Ferritic, Martensitic, and PH Stainless Steels 350-450 HB; 35-43 HRC; 900-2400 N/mm^2 UTS (49)
  • M Stainless Steel (49)
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      Austenitic Stainless Steel 130-200 HB; <600 N/mm^2 UTS (49)
    • M2
      High Strength Austenitic Stainless and Cast Stainless Steels 150-230 HB; <25 HRC; >600 N/mm^2 UTS (49)
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      Duplex Stainless Steel 135-275 HB; <30 HRC; 500-1200 N/mm^2 UTS (49)
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