Mitsubishi MMT11IR150ISO-S VP15TF Threading Insert | MMC Japan
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MMT11IR150ISO-S VP15TF
Mitsubishi Materials | MMT Series Internal ISO Metric 1.5mm Pitch
The Mitsubishi MMT11IR150ISO-S VP15TF is a premium internal threading insert engineered for 1.5mm pitch ISO metric threads. Designed for the MMTIR boring bar series, this insert features the advanced -S type 3D chipbreaker. This unique geometry is the ultimate solution for chip control in restricted internal diameters, preventing the "bird-nesting" of chips that often leads to thread surface damage and tool failure. Coated with VP15TF Miracle PVD, it offers unparalleled versatility across steel and stainless steel.
Technical Specifications
| ISO/Metric Designation | MMT11IR150ISO-S |
|---|---|
| ANSI Equivalent (Inch) | 11IR 1.5 ISO-S |
| Thread Standard / Angle | ISO Metric 60° (Full Form) |
| Thread Pitch | 1.5 mm |
| Insert Size (IC) | 6.35 mm (1/4") |
| Grade / Coating | VP15TF (Miracle PVD Coated) |
VP15TF Miracle Grade
The VP15TF grade combines a high-toughness carbide substrate with a specialized Miracle Al-Ti-N PVD coating. This grade is widely recognized for its adhesion resistance, which is critical when indexable threading stainless steel. It prevents the workpiece material from welding to the edge, ensuring sharp thread profiles and extended tool life.
-S Type 3D Geometry
The -S type chipbreaker features a molded 3D rake surface. In internal threading, chips tend to stay in the hole; the -S breaker curls chips into small, manageable shapes that are easily flushed out by coolant. This reduces vibration and prevents built-up edge (BUE) during the final finishing passes.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Total Number of Passes |
|---|---|---|
| Carbon Steel / Alloy Steel | 80 - 160 m/min | 8 - 14 |
| Stainless Steel (300 series) | 60 - 120 m/min | 10 - 16 |
MMTIR INTERNAL HOLDER SYSTEM
Optimized for use with Mitsubishi MMTIR boring bars for stable internal threading operations.
Shop MMT Threading Bars →Metric vs. Inch Cross-Reference
| Feature | Metric: MMT11IR150ISO | ANSI: 11IR 1.5 ISO |
|---|---|---|
| Insert Length (L) | 11 mm | 1/4" IC (Inscribed Circle) |
| Thread Pitch | 1.5 mm | ~17 TPI (Threads Per Inch) |