Mitsubishi MMT11IRA60-S VP15TF Threading Insert | MMC Japan
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MMT11IRA60-S VP15TF
Mitsubishi Materials | MMT Series Internal 60° Partial Profile
The Mitsubishi MMT11IRA60-S VP15TF is a highly versatile internal threading insert featuring a 60-degree partial profile. Unlike full-form inserts, this partial profile geometry allows a single insert to produce a wide range of thread pitches, making it a cost-effective solution for CNC internal threading of metric, Unified (UNC/UNF), and NPT threads. Engineered for the MMTIR boring bar series, the "-S" designation indicates an integrated 3D molded chipbreaker for superior chip control in blind holes and deep bores.
Technical Specifications
| ISO/Metric Designation | MMT11IRA60-S |
|---|---|
| Thread Profile / Angle | 60° Partial Profile (Metric/UN/NPT) |
| Pitch Range | 0.5 - 1.5 mm / 48 - 16 TPI |
| Insert Size (IC) | 6.35 mm (1/4") |
| Grade / Coating | VP15TF (Miracle PVD Coated) |
VP15TF Miracle Grade
The VP15TF grade is Mitsubishi’s premier PVD Miracle coating (Al-Ti-N) over a tough micro-grain carbide. This grade is optimized for adhesion resistance and thermal stability. It is the gold standard for threading stainless steel and alloy steels where cutting temperatures are high and the risk of built-up edge (BUE) is significant.
-S Type (3D) Chipbreaker
The -S type chipbreaker is specifically designed to solve the "bird-nesting" chip problem in internal boring and threading. Its 3D molded geometry forces chips to curl and break into small segments, allowing them to be flushed out easily by coolant, even in small diameter bores where space is limited.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed ($v_c$) | Recommended Passes |
|---|---|---|
| Carbon Steels (P) | 80 - 150 m/min | 6 - 12 passes |
| Stainless Steels (M) | 60 - 120 m/min | 8 - 14 passes |
| Cast Iron (K) | 70 - 130 m/min | 6 - 10 passes |
MMTIR HOLDER SYSTEM
This 11IRA60-S insert is compatible with Mitsubishi MMTIR internal threading bars and standard 11IR threading tools.
Shop MMTIR Boring Bars →Metric vs. Inch Cross-Reference
| Feature | Metric (ISO) | Inch (ANSI) |
|---|---|---|
| Insert Size | 11 mm | 1/4" IC |
| Pitch Range | 0.5 - 1.5 mm | 48 - 16 TPI |
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.