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ProductsTungsten Carbide Long Neck Micro End Mill for Steel HRC55 - 2 Flute, Deep Reach
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Tungsten Carbide Long Neck Micro End Mill for Steel HRC55 - 2 Flute, Deep Reach

High-precision long neck micro end mill (Rib Cutter) for machining deep cavities in steel up to HRC55. 2 flutes with extended effective lengths from 1mm to 30mm. Standard 4mm shank.

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Long Neck Tungsten Carbide Micro End Mill (2 Flute, HRC55)

Overcome the challenges of deep cavity milling and rib processing with our series of Long Neck Micro End Mills. Designed with a relieved shank (reduced neck diameter), these tools allow you to reach deep into molds and mechanical parts without the shank rubbing against the workpiece wall.
Engineered for Carbon Steel, Alloy Steel, Tool Steel, and Pre-hardened Steel (up to HRC55), this series combines the rigidity of a standard 4mm shank with the reach of a long-neck tool.

Key Features & Benefits

  • Deep Reach Capability: Features a specified Effective Cutting Length (L1) longer than the flute length, preventing interference in deep slots and complex contours.
  • High Precision Rib Processing: Ideal for machining thin ribs and deep pockets in mold making (plastic injection molds, die-casting molds).
  • Premium Carbide Substrate: Ultra-fine grain tungsten carbide ensures high wear resistance and edge retention in hardened steel.
  • Optimized Geometry: 2-flute design balances core strength with chip evacuation, reducing tool breakage in deep milling operations.
  • Rigid 4mm Shank: All cutter sizes (from
    ϕ\phi
    
    0.2 to
    ϕ\phi
    
    3.0) feature a standardized h6 tolerance 4mm shank, providing superior stability compared to standard 3.175mm shank tools.

Applications

  • Mold & Die: EDM electrode milling, deep rib processing, and corner cleaning.
  • Automotive: Precision parts with deep recesses.
  • General Engineering: Creating deep slots in steel components.

Technical Specifications (Standard Series)

Shank Diameter (D1): 4.0mm Helix Angle: 35° Coating: AlTiN / TiSiN (Optimized for Steel HRC55)
(Check the table below to find the exact "Effective Cutting Length" for your project)
Cutter Dia (
ϕ\phi

)
Length of Cut (L2)
Available Effective Cutting Lengths (L1) (Select the depth you need to reach)
Overall Length (L)
0.2 mm
0.4 mm
1.0, 1.5, 2.0, 2.5, 3.0 mm
50 mm
0.3 mm
0.6 mm
1.0, 1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0 mm
50 mm
0.4 mm
0.8 mm
1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0 mm
50 mm
0.5 mm
1.0 mm
1.5, 2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0, 8.0, 9.0, 10.0, 12.0 mm
50 mm
0.6 mm
1.2 mm
2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 mm
50 mm
0.7 mm
1.4 mm
2.0, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 mm
50 mm
0.8 mm
1.6 mm
2.0, 2.5, 3.0, 3.5, 4.0, 4.5, 5.0, 5.5, 6.0, 7.0, 8.0, 9.0, 10.0, 11.0, 12.0 mm
50 mm
0.9 mm
1.8 mm
3.0, 4.0, 5.0, 6.0, 7.0, 8.0, 9.0, 10.0 mm
50 mm
1.0 mm
2.0 mm
4, 5, 6, 7, 8, 10, 12, 14, 15, 16, 18, 20 mm (22, 25, 30mm available in 60mm OAL)
50 / 60 mm
1.1 mm
2.2 mm
6, 8, 10, 12, 14, 16, 18, 20 mm
50 mm
1.2 mm
2.4 mm
6, 8, 10, 12, 14, 16, 18, 20 mm
50 mm
1.3 mm
2.6 mm
6, 8, 10, 12, 14, 16, 18, 20 mm
50 mm
1.4 mm
2.8 mm
6, 8, 10, 12, 14, 16, 18, 20 mm
50 mm
1.5 mm
3.0 mm
6, 8, 10, 12, 14, 15, 16, 18, 20 mm (22, 25, 30mm available in 60mm OAL)
50 / 60 mm
1.6 mm
3.2 mm
6, 8, 10, 12, 14, 16, 18, 20 mm
50 mm
1.7 mm
3.4 mm
8, 10, 12, 14, 16, 18, 20 mm
50 mm
1.8 mm
3.6 mm
8, 10, 12, 14, 16, 18, 20 mm
50 mm
1.9 mm
3.8 mm
8, 10, 12, 14, 16, 18, 20 mm
50 mm
2.0 mm
4.0 mm
8, 10, 12, 14, 15, 16, 18, 20 mm (22, 25, 30mm available in 60mm OAL)
50 / 60 mm
2.5 mm
5.0 mm
8, 10, 12, 14, 16, 18, 20 mm (22, 25, 30mm available in 60mm OAL)
50 / 60 mm
3.0 mm
6.0 mm
10, 12, 14, 15, 16, 18, 20 mm (22, 25, 30mm available in 60mm OAL)
50 / 60 mm

Need Assistance Selection the Right Reach?

Selecting the correct neck length is crucial to avoid breakage. Always choose the shortest effective length that clears your workpiece to maximize tool rigidity.
Contact us for technical support or bulk pricing!