Mitsubishi CNMA120416 UC5115 Heavy-Duty Cast Iron Carbide Insert (10pcs)
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CNMA120416 UC5115
Extreme Roughing Specialist | 1.6mm Corner Radius | UC5115 CVD Grade
Maximum Edge Security for Heavy Castings
UC5115 Grade (The K-Class Standard): This grade represents the pinnacle of versatility for machining Gray and Ductile Cast Iron (K10–K25). The thick Alumina (Al2O3) CVD coating provides a thermal shield that allows for high-speed operation, while the specialized substrate offers the shock resistance required for heavy roughing.
CNMA Flat-Top Design: As a Flat-Top geometry, this insert has no chipbreaker. In cast iron machining, this is a major advantage. It provides the thickest possible cutting edge, effectively preventing the "edge crumbling" that occurs when traditional chipbreaker inserts hit sand pockets or casting crust.
1.6mm (1/16") Ultra-Heavy Radius: The 16 radius is built for High-Feed Roughing. It distributes the cutting pressure across a larger area, reducing heat concentration and allowing for massive feed rates that significantly shorten cycle times for large components.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMA120416 | 12.7 mm | 4.76 mm | 1.60 mm |
| Imperial | CNMA434 | 1/2" | 3/16" | 0.0630" (1/16") |
Extreme Roughing Parameters
*The 1.6mm radius requires high machine rigidity. Ensure the tool holder and workpiece are firmly clamped.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Cast Iron (GG30/HT300) | 120 - 400 m/min | 0.30 - 0.75 mm/r | 1.50 - 6.00 mm |
| Ductile Iron (GGG60/QT600) | 100 - 300 m/min | 0.25 - 0.55 mm/r | 1.50 - 5.00 mm |
Heavy-Duty Tool Holders
Maximum performance for DCLNR/L 12 and MCLNR/L 12 turning systems:
Shop DCLNR 12 HoldersPro-Tip: When to use the 1.6mm Radius
1.6mm Radius: The "Safety Specialist." Use this for heavy scale, severe interrupted cuts, and machining through sand holes. It offers the strongest edge in the CNMA family.
1.2mm Radius: Switch to a smaller radius if your machine experiences chatter or if the workpiece is prone to deflection, as the 1.6mm radius generates high radial forces.
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