Mitsubishi DCGT11T302R-SN VP15TF Ground Precision Turning Insert (10pcs)
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DCGT11T302R-SN VP15TF
G-Class Ground Precision | Miracle PVD Coating | SN Ultra-Low Force Geometry
Engineered for Vibration-Sensitive Machining
VP15TF Grade (The Miracle PVD Advantage): The VP15TF is a micro-grain carbide substrate paired with Mitsubishi’s proprietary Miracle (Al-Ti-N) PVD coating. Unlike CVD coatings, this PVD layer is exceptionally uniform and thin, allowing the fully ground cutting edge to maintain its razor-sharpness. It is the premier choice for stainless steels, carbon steels, and heat-resistant alloys.
SN Chipbreaker (Anti-Vibration Specialist): The SN geometry is a super-sharp, high-positive rake breaker. It is specifically designed to "slice" through material rather than "pushing" it. By drastically reducing radial cutting forces, it prevents deflection in slender workpieces and eliminates chatter in internal boring operations.
G-Class Fully Ground Precision: Every DCGT insert is periphery-ground. This ensures a sharp, burr-free edge and an indexing tolerance within ±0.025mm. This high level of repeatability means your "first part" after an insert change is as accurate as the "last part."
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCGT11T302R-SN | 9.525 mm | 3.97 mm | 0.20 mm |
| Imperial | DCGT32.50.5R-SN | 3/8" | 5/32" | 0.0078" |
Precision Machining Recommendations
*The SN breaker is optimized for ultra-light cuts. Ensure spindle speed (RPM) is high to maintain surface finish Ra.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild / Carbon Steel | 120 - 250 m/min | 0.02 - 0.10 mm/r | 0.05 - 0.80 mm |
| Stainless Steel (316) | 80 - 180 m/min | 0.02 - 0.08 mm/r | 0.05 - 0.60 mm |
Compatible Tool Holders
Maximum performance when used with SDJCR or SDUCR 11-series holders:
Shop SDJCR 11 HoldersPro-Tip: Ground DCGT vs. Molded DCMT
DCGT (Ground): Best for aerospace or medical parts where tolerances are tighter than +/- 0.01mm. The ground edge significantly reduces "smearing" and work-hardening on stainless steel.
DCMT (M-Class Molded): Use for general-purpose roughing where cost-per-edge is the priority and tolerances are more relaxed.
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