Carbide Micro Diameter End Mills

High-precision solid carbide micro end mills (0.1-0.95mm) engineered for electronics, medical devices, and precision mold manufacturing. Available in GM (≤38HRC), PM (≤55HRC), and ALC (DLC for non-ferrous) series. 2-flute, long reach, and ball nose variants for ultimate micro machining flexibility.

Carbide Micro Diameter End Mills

Why Choose Specialized Micro Diameter End Mills?

Ultra-High Precision

±0.005mm diameter tolerance and <0.003mm runout ensure micron-level accuracy for medical implants, watch components, and micro-mold detailing.

Material-Specific Coatings

TiSiN (GM) for ≤38HRC steel, AlTiCrN (PM) for ≤55HRC hardened steel, and DLC (ALC) for zero-adhesion aluminum/copper/graphite machining.

Optimized Chip Evacuation

2-flute geometry with wide gullets prevents chip packing in gummy micro materials. Critical for maintaining cutting efficiency and preventing tool breakage.

Deep Cavity & Long Reach

Extended flute variants (2-10mm) with reinforced cores enable deep slotting and 3D profiling in restricted spaces without compromising rigidity.

Micro 3D Contouring

Ball nose variants deliver smooth spherical interpolation for micro jewelry, watch dials, and intricate medical device surfaces with mirror-like finishes.

Extended Micro Tool Life

Advanced PVD/DLC coatings reduce friction heat by 30-50%, extending micro tool life by 3-5x compared to uncoated alternatives.

Specialized End Mill Series

Purpose-built cutting solutions for unique machining challenges

Micro Series Selection Guide

Choosing the right micro diameter series depends on workpiece hardness, material type, and required cavity depth. Match your application below.

FeatureGM Micro SeriesPM Micro SeriesALC Micro Series
CoatingTiSiN (Blue-Grey)AlTiCrN (Purple)DLC (Diamond-Like Carbon)
Max Hardness≤40 HRC≤55 HRCNon-Ferrous Only
Best ForPre-hardened steel, stainlessHardened steel, tool steelAluminum, copper, graphite
Chip FlowOptimized 2-fluteOptimized 2-fluteUltra-low friction 2-flute
Long ReachAvailable (2-10mm)Available (2-10mm)Available (2-10mm)

Application Recommendations

  • 💎 Micro Electronics & PCB: ALC DLC Flat/Ball for aluminum heat sinks, copper traces, and connector housings.
  • 🏥 Medical & Implants: GM/PM Micro Ball for titanium & stainless steel surgical tools. ±0.005mm precision.
  • ⌚ Watchmaking & Jewelry: ALC Micro Long Reach Ball for precious metals & brass. Mirror-finish 3D detailing.
  • 🔧 Precision Molds & Dies: PM Micro Long Reach for hardened steel cavities ≤55HRC. Deep pocket profiling.
  • ⚡ Graphite Electrodes: ALC Micro Series for EDM electrode detailing. Zero coating contamination.
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Common Micro Machining Challenges & Solutions

Tool Deflection & Breakage

Micro tools lack core rigidity, causing chatter and fracture during deep cuts.


✅ Solution: Reinforced core diameters, conservative stepover (2-5% D), and precision collets (<0.002mm runout).

Chip Packing in Micro Cavities

Gummy materials pack flute valleys, causing recutting and sudden tool failure.


✅ Solution: 2-flute wide gullets, air blast/MQL evacuation, and climb milling with consistent feed rates.

Heat Concentration on Tips

Poor thermal conductivity concentrates heat at micro tips, accelerating wear.


✅ Solution: Advanced PVD/DLC coatings, high RPM with low fz, and optimized 3D stepover strategies.

Typical Micro Machining Applications

Micro Electronics

Precision slotting of aluminum heat sinks, copper busbars, and miniature connectors.

Medical Devices

Micro profiling of surgical instruments, implant components, and diagnostic parts.

Watchmaking

Intricate 3D detailing of watch movements, dials, and precious metal components.

Precision Molds

Micro cavity machining for connectors, optical lenses, and miniature dies.

Frequently Asked Questions

All GM, PM, and ALC micro series maintain strict runout <0.003mm (D0.1-D0.5mm) and <0.005mm (D0.6-D0.95mm). High-precision collets (ER11/ER16) are recommended to maintain <0.002mm system runout.

Choose GM Series (TiSiN) for pre-hardened steel ≤38HRC. Choose PM Series (AlTiCrN) for hardened steel ≤55HRC. Choose ALC Series (DLC) for aluminum, copper, brass, and graphite to prevent material adhesion.

For micro ball nose 3D profiling, use conservative stepover: 2-3% of D for fine finishing, 5-8% for semi-finishing. Maintain constant chip load and use climb milling to prevent deflection.

Yes. Our micro long reach tools feature reinforced core diameters and optimized flute geometry. Use conservative depths of cut, high RPM, and avoid full slotting to maintain rigidity in deep cavities.

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