Designed for ultra-precise CNC milling, this high-precision micro carbide end mill delivers outstanding rigidity when cutting hardened steels up to HRC65. Durable Mills manufactures this 2-flute micro carbide end mill with sub-micron tungsten carbide to ensure clean chip flow and extended tool life in micro mold finishing.
Engineered and supplied by Durable Mills, this premium micro carbide end mill series is optimized for ultra-fine profile milling, slotting, and micro-cavity machining in hardened steels up to HRC65. Available in cutting diameters from 0.2 mm to 0.9 mm, each tool is ground to tight tolerances to provide maximum tool rigidity and minimal deflection during high-speed CNC cycles.
Featuring an ultra-fine tungsten carbide substrate combined with a high-thermal-stability TiAlN/TiSiN composite coating, this solid carbide micro cutter ensures stable tool wear, reduced friction, and superior surface finishing across mold, die, electronics, and medical manufacturing applications.
| Item Code | Cutting Dia. (D, mm) | Flute Length (Lc, mm) | Shank Dia. (d, mm) | Overall Length (L, mm) | Flutes |
|---|---|---|---|---|---|
| DM-0.2*0.4*4*50 | 0.2 | 0.4 | 4 | 50 | 2 |
| DM-0.3*0.6*4*50 | 0.3 | 0.6 | 4 | 50 | 2 |
| DM-0.4*0.8*4*50 | 0.4 | 0.8 | 4 | 50 | 2 |
| DM-0.5*1*4*50 | 0.5 | 1.0 | 4 | 50 | 2 |
| DM-0.6*1.2*4*50 | 0.6 | 1.2 | 4 | 50 | 2 |
| DM-0.7*1.4*4*50 | 0.7 | 1.4 | 4 | 50 | 2 |
| DM-0.8*1.6*4*50 | 0.8 | 1.6 | 4 | 50 | 2 |
| DM-0.9*1.8*4*50 | 0.9 | 1.8 | 4 | 50 | 2 |
| ISO Group | Applicable Material | Cut Depth (ap) | Cut Width (ae) | Speed (vc, m/min) | Feed Rate (fz, mm/z) |
|---|---|---|---|---|---|
| P | Carbon Steel / Alloy Steel (<35 HRC) | ap ≤ 1.5D | ae ≤ 0.15D | 11 – 28 | 0.008 |
| P | Alloy Steel (35 – 48 HRC) | Scaled to D | Scaled to D | Fine-tune per setup | 0.006 – 0.008 |
| M | Stainless Steels | ap ≤ 1.0D | ae ≤ 0.10D | Coolant suggested | 0.005 – 0.007 |
| K | Gray Cast Iron / Ductile Cast Iron (<32 HRC) | ap ≤ 1.5D | ae ≤ 0.15D | 150 | 0.0065 |
| N | Aluminum Alloy / Copper Alloy | ap ≤ 1.5D | ae ≤ 0.20D | High RPM | 0.008 – 0.012 |
| H | Alloy Steel / Hardened Steel (45 – 65 HRC) | ap ≤ 0.5D – 1.0D | ae ≤ 0.05D – 0.1D | Air blow / Oil mist | 0.004 – 0.006 |
For micro tool diameters below 1.0 mm, dynamic spindle runout must remain under 0.003 mm (3 μm). Higher runout causes uneven tooth loading and increases the risk of micro-fracturing on the cutting edge.
Yes. Our specialized high-temperature coating provides outstanding thermal stability. We recommend an air blow or oil mist (MQL) cooling setup when machining hardened steel (45–65 HRC) to assist in evacuating micro chips without thermal shocking the substrate.
Yes. Durable Mills provides OEM branding, wholesale batch packaging, and customized neck lengths for global distributors. Inquire directly through our Contact Page or reach us at info@durablemills.com.
Contact our sales engineers for sample testing, bulk supply contracts, and tooling data sheets.
