Mitsubishi DCET11T304R-SN VP15TF Ground Precision Turning Insert (10pcs)
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DCET11T304R-SN VP15TF
Fully Ground E-Class | Miracle PVD Coating | SN Low-Force Precision
The Ultimate Finishing Solution
VP15TF Grade (Miracle PVD Shield): The VP15TF is a micro-grain carbide substrate enhanced by Mitsubishi’s proprietary Miracle (Al-Ti-N) PVD coating. Because this is a PVD process, the coating thickness is perfectly uniform, ensuring that the fully ground cutting edge of the DCET remains ultra-sharp. It offers high resistance to built-up edge (BUE) and thermal cracking.
SN Chipbreaker (Vibration Control): The SN geometry is a sharp, positive-rake chipbreaker specifically engineered for "super-light" finishing. It reduces the radial cutting force that typically causes part deflection or vibration. It is the preferred geometry for long, slender shafts or finishing deep internal bores.
Fully Ground (E-Class) Precision: Unlike standard M-class inserts (DCMT), every surface of the DCET is precision ground. This results in superior indexing accuracy—when you flip the insert to a new edge, your machine's offset requires minimal adjustment.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCET11T304R-SN | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | DCET32.51R-SN | 3/8" | 5/32" | 0.0157" (1/64") |
Precision Machining Parameters
*The 11T3 size offers high stability. For best results, ensure the depth of cut is within the chipbreaker's effective range.
| Material Group | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Alloy Steel / Tool Steel | 120 - 250 m/min | 0.05 - 0.15 mm/r | 0.10 - 1.50 mm |
| Stainless Steel (304/316) | 90 - 180 m/min | 0.04 - 0.12 mm/r | 0.08 - 1.20 mm |
Pro-Tip: DCET Ground vs. DCMT Molded
DCET (Ground): Best for aerospace or medical parts where tolerances are tighter than +/- 0.01mm. The ground edge significantly reduces "smearing" on stainless steel.
DCMT (Molded): Use for general-purpose roughing and semi-finishing where the accuracy of the insert index is less critical.
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