Mitsubishi CNMG120408-GH UE6020 Heavy Roughing Insert (10pcs)
30-Day Free Returns
Free Worldwide Shipping
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.