Mitsubishi QOMT1856R-M2 VP15TF Milling Insert | Genuine MMC Japan
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QOMT1856R-M2 VP15TF
Mitsubishi Materials | AQX Series Maximum-Size Multifunctional Milling Insert
The Mitsubishi QOMT1856R-M2 VP15TF is the largest, most robust indexable milling insert in the prestigious AQX multifunctional cutter family. Designed for high-metal removal rates (MRR), this "18" size insert is the definitive choice for heavy-duty CNC milling, deep pocketing, and high-efficiency ramping. Engineered with the -M2 medium-cut chipbreaker and the proprietary VP15TF Miracle PVD coating, it delivers uncompromising durability when machining stainless steel, carbon steels, and heat-resistant alloys under high-torque conditions.
Technical Specifications
| ISO/Metric Designation | QOMT1856R-M2 |
|---|---|
| ANSI Equivalent | QOMT 65.5 R-M2 |
| Grade / Coating | VP15TF (Miracle Al-Ti-N PVD) |
| Thickness / Width Class | 5.6 mm / 18 mm |
| Chipbreaker Style | -M2 (Optimized Edge Strength) |
VP15TF Miracle PVD Grade
The VP15TF grade utilizes a specialized micro-grain carbide substrate coated with Mitsubishi’s Miracle Al-Ti-N layer. This provides an optimal balance of toughness and oxidation resistance. It is specifically designed to combat built-up edge (BUE) and thermal cracking in milling gummy materials like 316L stainless steel, where extreme heat is generated at the cutting zone.
-M2 High-Strength Geometry
The -M2 chipbreaker is the workhorse for heavy milling. It features a reinforced cutting edge designed to handle the massive cutting resistance encountered in large arbor-style cutters. This geometry ensures stable chip control during high-feed milling, reducing the risk of edge micro-chipping and improving the final thread surface finish and dimensional stability.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) |
|---|---|---|
| Structural & Carbon Steel | 150 - 250 m/min | 0.15 - 0.35 mm/t |
| Stainless Steel (SUS300) | 90 - 160 m/min | 0.12 - 0.25 mm/t |
| Hardened / Alloy Steel | 80 - 150 m/min | 0.10 - 0.28 mm/t |
AQX SERIES COMPATIBILITY
The QOMT1856R-M2 insert is designed for large-scale Mitsubishi AQX Arbor Cutters (Arbor diameters typically 50mm to 100mm+).
View Large AQX Milling Holders →Metric vs. Inch Cross-Reference
| Feature | Metric Designation | Inch Designation (ANSI) |
|---|---|---|
| Insert Size | 18 (18mm Class) | QOMT 6 Class |
| Thickness | 5.6 mm | 0.220 inch |