Mitsubishi CNMG190612-GH UC5115 Heavy Roughing Cast Iron Insert (10pcs)
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CNMG190612-GH UC5115
The Cast Iron Beast | 19mm Heavy Roughing | UC5115 Wear-Resistant CVD
Built for Large-Scale Casting Removal
UC5115 Grade (The Abrasive Armor): The UC5115 is Mitsubishi's premium CVD-coated grade for K-Class (Cast Iron). Featuring a thick Alumina ($Al_2O_3$) layer, it acts as a thermal shield, protecting the carbide substrate from the extreme friction heat of machining grey and nodular iron. It maintains edge sharpness even when cutting through the abrasive sand and scale found on raw casting surfaces.
GH Chipbreaker (Impact Strength): The GH geometry is designed for the heaviest roughing applications. It features a high-strength reinforced land (T-land) that prevents the cutting edge from chipping under heavy impact or interrupted cuts. This geometry handles large depths of cut and high feeds where standard "sharp" inserts would shatter.
1.2mm (3/64") Edge Radius: The 12-radius offers a perfect compromise between extreme edge strength and the ability to maintain manageable radial cutting forces on large workpieces.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG190612-GH | 19.05 mm | 6.35 mm | 1.20 mm |
| Imperial | CNMG643-GH | 3/4" | 1/4" | 0.0472" (3/64") |
Heavy Roughing Cutting Parameters
*The UC5115 grade is optimized for high-speed industrial productivity. Dry machining is recommended for grey cast iron.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Grey Iron (HT300/GG30) | 180 - 400 m/min | 0.35 - 0.85 mm/r | 2.50 - 9.00 mm |
| Ductile Iron (FCD600) | 140 - 320 m/min | 0.30 - 0.70 mm/r | 2.00 - 7.50 mm |
Compatible Power Tooling
Maximum rigidity is mandatory for 19mm IC inserts. Fits DCLNR/L 19 (Metric 3232/4040) series holders:
Shop DCLNR 19 HoldersPro-Tip: UC5115 vs. UC5105
UC5115 (The Industrial Standard): Choose this for general cast iron roughing where edge toughness is required to survive casting skin and interruptions.
UC5105 (High-Speed Finishing): Switch to UC5105 only if you are doing continuous, clean cuts in grey iron and need the absolute highest wear resistance to keep up with production targets.
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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.