Mitsubishi DCGT11T304M-SMG VP15TF Ground Precision Turning Insert (10pcs)
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DCGT11T304M-SMG VP15TF
Semi-Mirror Ground Precision | Miracle PVD | Medium-Fine Finishing
The Bridge Between Precision and Productivity
VP15TF Grade (Miracle PVD Tech): The VP15TF grade is the gold standard for versatility. It utilizes a high-toughness micro-grain carbide substrate coated with (Al,Ti)N Miracle PVD. This coating is specifically engineered to resist built-up edge (BUE) in gummy materials like 304/316 Stainless Steel while providing enough thermal protection for high-speed alloy steel turning.
SMG Chipbreaker (Semi-Mirror Ground): The SMG geometry is a unique "hybrid" breaker. It features a razor-sharp ground edge for surface finish quality but adds a specific micro-land that stabilizes the edge during semi-finishing cuts. This allows you to push the feed rate slightly higher than a standard "F" breaker without sacrificing the "Mirror" surface finish.
0.4mm Radius & Neutral Geometry: The 0.4mm (04) nose radius provides the best balance of strength and Ra (surface roughness) values. Being a neutral-style insert, it can be used for both right and left-hand toolpaths in specific holders.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCGT11T304M-SMG | 9.525 mm | 3.97 mm | 0.40 mm |
| Imperial | DCGT32.51M-SMG | 3/8" | 5/32" | 0.0157" |
Recommended Machining Parameters
*The SMG breaker allows for a wider feed range compared to standard fine finishers.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon/Alloy Steel | 140 - 280 m/min | 0.05 - 0.20 mm/r | 0.15 - 2.00 mm |
| Stainless (304/316) | 100 - 190 m/min | 0.04 - 0.15 mm/r | 0.10 - 1.50 mm |
Compatible Tooling Systems
Maximum performance when used with precision SDJCR/L or SDUCR/L holders:
Shop SDJCR 11 HoldersPro-Tip: When to choose SMG over F-Breakers
SMG Breaker: Use when you need a mirror finish but your depth of cut is slightly heavier (up to 2mm). It is more durable than the ultra-sharp F-breaker.
F Breaker: Choose only for the lightest finishing passes ($Ap < 0.5mm$) where cutting force must be minimized at all costs.
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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.