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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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.