Mitsubishi CNMG120408 UC5105 High-Speed Cast Iron Turning Insert (10pcs)
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CNMG120408 UC5105
High-Speed Performance | UC5105 CVD Grade | Gray Iron Specialist
Engineered for Maximum Surface Speed
UC5105 Grade (CVD Coating): UC5105 is the premier grade for High-Speed Turning of Gray Cast Iron. It features a specialized Alumina (Al2O3) coating with a refined grain structure that provides industry-leading resistance to crater wear and plastic deformation. This grade is designed for high-productivity environments where cycle time reduction is critical.
CNMG Geometry & Chipbreaker: This 80-degree diamond insert utilizes a multi-purpose chipbreaker optimized for cast iron. It effectively handles the unique chip formation of Gray Iron, preventing "powdering" from interfering with the tool life while providing four distinct cutting edges for maximum economy.
0.8mm (1/32") Radius: The 08 radius is the global standard for CNC turning. It offers excellent edge stability for semi-roughing while being capable of producing high-quality finishes at standard feed rates.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120408 | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CNMG432 | 1/2" | 3/16" | 0.0315" (1/32") |
Recommended Cutting Parameters
*UC5105 is designed for continuous, high-speed cutting. Use with stable machine setups for best results.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Gray Cast Iron (HT200-300) | 250 - 600 m/min | 0.15 - 0.45 mm/r | 0.50 - 4.50 mm |
| Ductile Iron (Stable Cut) | 180 - 400 m/min | 0.12 - 0.35 mm/r | 0.50 - 3.50 mm |
Compatible Tool Holders
Maximum performance for DCLNR/L 12 and MCLNR/L 12 turning systems:
Shop DCLNR 12 HoldersPro-Tip: UC5105 vs. UC5115
UC5105 (The High-Speed King): Best for continuous finishing or semi-roughing of Gray Iron where tool life is limited by abrasive wear.
UC5115 (The All-Rounder): Best for general-purpose use, interrupted cuts, or when machining Ductile Iron that requires higher fracture toughness.
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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.