Amana Tool 51597 Solid Carbide Spiral CNC Variable Helix for Stainless Steel, Steel, Titanium, Cast Iron and Cermet with AlTiN Coating 4-Flute x 1/2 Dia x 1 Cut Height x 1/2 Shank x 3 Inches Long Up-Cut CNC Square Bottom End Mill

Amana Tool® Item #51597
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4 Flute • Up-Cut
Unique variable design for faster speeds and feeds provides quiet operation & better finish. Amana's CNC Variable helix tools are the superstars of carbide end mills for professionals and hobbyists alike. The cnc variable helix eliminates harmonic chatter, critical when surface finishes, part dimension tolerances& tool life are of utmost importance. For use with manual and automatic milling machines, as well as the most sophisticated CNC machines.

Excellent for cutting:

  • Stainless Steel
  • Titanium
  • Cast Iron
  • Steel
  • Cermet (composites in which ceramic materials and metals are joined together)
  • Metal Composite Material (MCM)

Premium Aluminum Titanium Nitride (AlTiN) coating provides quantum increases in productivity, either in terms of speed or longevity, with or without coolant. 

AlTiN Coating Benefits:

  • Extra wear resistance
  • Allows for faster feed and speed rates
  • Cutting edge protected from wear
  • Better chip evacuation
  • Less heat build up
  • Superior cutting quality and extended tool life
These cnc variable helix end mills are outstanding tools for peripheral milling, and can take aggressive cuts along the full length of the overall flute length with no issues. They last much longer than a general purpose end mills, partly because they are coated, partly because they dampen vibration which tends to break a sharp cutting edge down very quickly.

WARNING! Inspect cut quality and adjust feed and speed accordingly. Care should be taken to observe proper feeds and speeds according to the workpiece material to avoid damage.Note: For optimal results and extended tool life use mist lubricant system or air cooling.

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CNC Feed/Speed

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WARNING: Drilling, sawing, sanding or machining wood products can expose you to wood dust, a substance known to the State of California to cause cancer. Avoid inhaling wood dust or use a dust mask or other safeguards for personal protection. For more information go to
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