Corner Radius End Mills

3-Flute Corner Radius End Mill — Aluminium

High-helix three-flute geometry with a radiused corner for aluminium, where chip clearance decides the finish.

Material grade Sub-micron carbide, K10–K20
Coating Uncoated / polished
Flutes 3
Diameter range Ø6–16 mm, R0.5–2.0
Helix angle 45°
Tolerance h6, ±0.005 mm
Shank h6 ground, HA
Application Profiling and pocketing aluminium
Suitable for Aluminum

Reply within 24 hours on business days · Samples available before volume · NDA on request

About this tool

Aluminium is unforgiving about chip clearance and forgiving about almost nothing else. Three polished flutes and a 45° helix clear the chip before it can weld to the edge, and the radius keeps the corner intact where the cut is interrupted.

Where it works

Aluminium and non-ferrous profiling, pocketing and slotting, including high-speed machining on modern spindles.

Cutting data — starting point

Starting values for a rigid setup with a good coolant supply. Treat them as a first trial, then adjust to the machine, the holder and the actual condition of the material.

Work material Cutting speed vc Feed Depth of cut
Aluminium (N) 400–700 m/min 0.05–0.12 mm/tooth 0.5×D
Aluminium 7075 (N) 250–450 m/min 0.05–0.10 mm/tooth 0.4×D
Plastics (N) 250–450 m/min 0.05–0.10 mm/tooth 0.5×D

What you can specify

  • Diameter, corner radius and flute count ground to your drawing
  • Coating — AlCrN, AlTiN, TiAlN, DLC or uncoated, matched to the workpiece
  • Shank — h6 ground, HA / HB / whistle-notch
  • Laser-marked part number, or blank shanks for distributor stock

Not sure about the geometry? Send the drawing or a photo of the part. We recommend the profile, the coating and the starting cutting data — and quote from there.

Why it works

  • Polished flutes resist built-up edge in soft alloys
  • 45° helix lifts chips out of deep pockets
  • Radiused corner strengthens the edge on interrupted cuts
  • Designed for high spindle speed and high feed
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Most of what we ship is ground to a drawing. Send yours — we quote within 24 hours.