Mitsubishi CPMH080208-MV UE6020 Steel Turning Insert (10pcs)
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CPMH080208-MV UE6020
High-Strength Steel Turning | UE6020 Impact Grade | MV Chipbreaker Control
Engineered for Stability and Edge Life
UE6020 Grade (Titanium-Reinforced CVD): The UE6020 is Mitsubishi's veteran grade for P-Class (Steel) machining. It is engineered with a thick multi-layer coating that excels in medium-to-low speed ranges where thermal cracking is less of a risk than mechanical chipping. This makes it the premier choice for "rough-to-finish" operations on small lathes where rigidity might be limited.
MV Chipbreaker (Wide-Range Chip Control): The MV geometry features a specialized 11-degree positive rake. It is specifically designed to handle "voluminous chips" in carbon steel. By aggressively curling the chip, it ensures that even at higher feed rates, the waste material breaks away from the tool quickly, protecting the newly machined surface.
0.8mm (1/32") Robust Radius: The 08 radius is the strength-focused choice. It provides a larger surface area at the tip to dissipate heat and withstand the vibration common in internal boring or long-reach external turning.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CPMH080208-MV | 7.94 mm | 2.38 mm | 0.80 mm |
| Imperial | CPMH2.522-MV | 5/16" | 3/32" | 0.0315" (1/32") |
Recommended Cutting Parameters
*The 0.8mm radius allows for higher chip loads. Ensure the feed rate is sufficient to engage the chipbreaker effectively.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (1045) | 140 - 260 m/min | 0.12 - 0.30 mm/r | 0.50 - 2.50 mm |
| Alloy Steel (4140) | 110 - 200 m/min | 0.10 - 0.25 mm/r | 0.40 - 1.80 mm |
Pro-Tip: UE6020 vs. NX2525
UE6020 (The Reliable Rougher): Choose this for general steel turning where the material may have a rough surface or where the cut is interrupted.
NX2525 (The High-Speed Cermet): Switch to NX2525 Cermet if you have a stable machine and require a mirror-like surface finish on finishing passes.
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