Mitsubishi NNMU200608ZEN-MK MC5020 Milling Insert | MMC Japan
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NNMU200608ZEN-MK MC5020
Mitsubishi Materials | Double-Sided High-Feed Milling Insert
The Mitsubishi NNMU200608ZEN-MK MC5020 is a specialized face milling insert designed for high-efficiency machining of cast iron. Utilizing a double-sided hexagonal geometry with multiple cutting edges, this insert maximizes tool life and cost-per-edge. The MK chipbreaker is specifically optimized for medium-duty cast iron milling, while the MC5020 CVD coating provides the thermal stability required for high-speed dry machining.
Technical Specifications
| ISO Designation | NNMU200608ZEN-MK |
|---|---|
| Grade / Coating | MC5020 (CVD Alumina + TiCN) |
| Nose Radius | 0.8 mm (0.0315") |
| Chipbreaker Style | -MK (Medium Cutting for Cast Iron) |
| Primary Material | Gray Cast Iron (GG), Ductile Iron (GGG) |
MC5020 Grade Technology
The MC5020 grade features a thick Alumina ($Al_2O_3$) layer and a specialized TiCN coating. This combination is specifically engineered for indexable milling of cast iron, offering excellent crater wear resistance and thermal protection during continuous high-speed runs.
-MK Chipbreaker Logic
The -MK chipbreaker provides a stable cutting edge that resists the abrasive nature of cast iron. It reduces cutting forces and manages chip formation to prevent edge chipping, ensuring a superior surface finish on large face-milling components.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) (m/min) | Feed per Tooth ($f_z$) |
|---|---|---|
| Gray Cast Iron (K) | 150 - 350 | 0.10 - 0.35 mm/t |
| Ductile Cast Iron (K) | 120 - 250 | 0.10 - 0.30 mm/t |
WBC MILLING SYSTEM COMPATIBILITY
This NNMU insert is designed for Mitsubishi Materials WBC Face Mills. Ensure rigid clamping for maximum performance.
Shop Compatible Face Mills →Metric vs. Inch Cross-Reference
| Feature | Metric Designation | Inch Designation (Equivalent) |
|---|---|---|
| Insert Size | 2006 | NNMU 6.35-ZEN |
| Nose Radius | 0.8 mm | 0.0315 inch (1/32") |