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ProductsExtra Long Flute Micro End Mill for Aluminum - 2 Flute, Polished Finish
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Extra Long Flute Micro End Mill for Aluminum - 2 Flute, Polished Finish

High-performance long flute micro end mill for aluminum. Features polished flutes to prevent sticking in deep slotting & side milling. Cutting lengths up to 10xD. 4mm Shank.

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Extra Long Flute Micro End Mill for Aluminum (Polished, 2 Flute)

Machine deep slots and high walls in aluminum with confidence using our Extra Long Cutting Length (Long Flute) Micro End Mills.
Unlike standard tools, this series combines an extended flute length (up to 10xD) with a specialized High-Polish Geometry. This ensures that chips evacuate smoothly from deep cuts, preventing the "gummy" aluminum buildup that typically causes tool breakage in deep passes.

Key Features & SEO Benefits

  • Mirror-Polished Flutes: The flute surfaces are ground to a mirror finish. This reduces friction coefficient, ensuring that soft aluminum chips slide out easily without sticking or packing.
  • Extra Long Cutting Length: Flutes extend up to 10 times the cutter diameter (e.g., 1.0mm cutter with 10mm flute), allowing for continuous side milling of tall walls without step marks.
  • Rigid 4mm Shank: Features a standard h6 tolerance 4mm shank across all sizes (0.2mm - 3.0mm). This extra thickness provides the stability needed to prevent deflection when using long flutes.
  • Sharp Cutting Edge: Optimized 2-flute geometry shears through Aluminum 6061, 7075, Brass, and Copper with minimal cutting force.

Applications

  • Deep Slotting: Cutting through thick aluminum sheets or machining deep channels in a single pass.
  • Side Milling (Profiling): Finishing the exterior walls of electronic casings or heat sinks where a seamless surface is required.
  • Non-Ferrous Machining: Ideal for Aluminum, Brass, Copper, Bronze, and Plastics.

Technical Specifications

Shank Diameter: 4.0mm (Standard) Coating: Uncoated (Polished Bright Finish) Helix Angle: 45° (High helix for rapid chip removal)
(Find your Cutter Diameter and select the required Flute Length L2)
Cutter Diameter (
ϕ\phi

)
Available Cutting Lengths (L2) (Multiple depth options available)
Overall Length (L1)
0.2 mm
0.5, 0.6 mm
50 mm
0.3 mm
1.0, 1.5, 2.0 mm
50 mm
0.4 mm
1.0, 1.5, 2.0, 2.5, 3.0 mm
50 mm
0.5 mm
1.5, 2.0, 2.5, 3.0, 3.5, 4.0 mm
50 mm
0.6 mm
1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0 mm
50 mm
0.7 mm
2.0, 2.5, 3.0, 3.5, 4.0, 5.0 mm
50 mm
0.8 mm
2.0, 2.5, 3.0, 3.5, 4.0, 5.0 mm
50 mm
0.9 mm
2.0, 3.0, 4.0, 5.0 mm
50 mm
1.0 mm
4, 5, 6, 7, 8, 10 mm
50 mm
1.2 mm
5, 6, 8 mm
50 mm
1.3 mm
5, 6, 8 mm
50 mm
1.4 mm
6, 8, 10 mm
50 mm
1.5 mm
5, 6, 7, 8, 10, 12 mm
50 mm
1.6 mm
6, 8, 10 mm
50 mm
1.8 mm
6, 8, 10 mm
50 mm
2.0 mm
8, 10, 12 mm
50 mm
2.5 mm
10, 12, 14 mm
50 mm
3.0 mm
12, 14, 16 mm
50 mm

Machining Tips for Long Flute Aluminum Cutters

  • Coolant is Critical: Always use flood coolant or mist to lubricate the long flutes and flush chips away.
  • Watch the Deflection: Long tools are less rigid. If machining deep slots, consider taking multiple axial passes or reducing the feed rate (F) to maintain accuracy.
Need custom sizes or DLC coating? Contact us for OEM services!