Mitsubishi CNMG120408-GH UE6020 Heavy Roughing Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
CNMG120408-GH UE6020
Heavy Roughing Titan | UE6020 Impact Toughness | GH Reinforced Geometry
The Powerhouse for Heavy Steel Removal
UE6020 Grade (The Fracture Resister): The UE6020 is a specialized CVD-coated grade engineered for P-Class (Steel) turning. It is legendary for its ability to handle "unfriendly" conditions. Whether you are dealing with vibration, interrupted cuts, or hard-skin hot-rolled steel, the UE6020's high-toughness substrate prevents edge chipping where other grades would fail.
GH Chipbreaker (Heavy-Duty Shield): The GH geometry is designed for the most aggressive depths of cut and high feed rates. It features a reinforced "T-Land" (Negative Land) on the cutting edge, which drastically increases edge strength. This is the optimal choice for roughing operations where tool pressure is high and chip control is mandatory.
0.8mm (1/32") Universal Radius: The 0.8mm radius provides a perfect balance. It is thick enough to withstand heavy radial forces during roughing while still capable of leaving a decent semi-finish surface for subsequent operations.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120408-GH | 12.7 mm | 4.76 mm | 0.80 mm |
| Imperial | CNMG432-GH | 1/2" | 3/16" | 0.0315" (1/32") |
Heavy Roughing Cutting Parameters
*The GH chipbreaker requires a minimum feed to engage chip control. Optimized for productivity over surface finish.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045/S45C) | 120 - 250 m/min | 0.25 - 0.55 mm/r | 1.50 - 5.00 mm |
| Alloy Steel (4140/SCM440) | 100 - 200 m/min | 0.20 - 0.45 mm/r | 1.00 - 4.00 mm |
Recommended Tool Holders
Maximum rigidity is essential for heavy roughing. Use DCLNR/L 12 or MCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: When to use GH vs MA?
GH (Heavy Duty): Use this when you need to "rip" material off. It is the strongest geometry but requires higher horsepower and a rigid machine.
UE6020 vs MC6025: UE6020 is the "Safety Grade." If you are machining a large, expensive part and cannot afford a sudden insert breakage, UE6020 is the more reliable choice for roughing.
Search Keywords: CNMG120408-GH UE6020 price, Mitsubishi heavy roughing inserts, CNMG432-GH carbide, UE6020 cutting parameters steel, GH chipbreaker vs MA chipbreaker.
Long-tail Keywords: Best carbide inserts for heavy steel roughing, Mitsubishi UE6020 for interrupted cuts, CNMG 120408-GH for hot rolled steel, buy Mitsubishi CNMG120408-GH online, heavy duty roughing inserts for CNC lathe.
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.