Mitsubishi RCMX1204MO NX2525 Cermet Turning Insert | Genuine MMC
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RCMX1204MO NX2525
Mitsubishi Materials | Large-Scale Cermet Profiling Specialist
The Mitsubishi RCMX1204MO NX2525 is a robust 12mm round cermet turning insert designed for high-efficiency finishing and copy turning. By utilizing NX2525 cermet technology, this insert bridges the gap between traditional carbide and ceramics, offering extreme resistance to oxidation and adhesion. It is the premier indexable turning choice for machining steel when a mirror-like surface finish and long-term dimensional stability are the primary requirements.
Technical Specifications
| ISO Designation | RCMX1204MO |
|---|---|
| ANSI Designation | RCMX 43 MO |
| Grade Category | NX2525 (Titanium Carbonitride Cermet) |
| Inscribed Circle ($IC$) | 12.0 mm (0.472") |
| Thickness ($S$) | 4.76 mm (0.187") |
NX2525 High-Gloss Grade
The NX2525 grade is a specialized cermet (ceramic-metal composite) that excels in high-speed finishing. It maintains a sharp cutting edge longer than carbide because it does not react chemically with the steel workpiece. This prevents built-up edge (BUE) and allows for consistent CNC turning results across long production runs.
MO Profiling Chipbreaker
The MO chipbreaker is a medium-duty geometry that provides a reinforced edge for profiling and copy milling applications. On a round (R) insert, the MO design ensures smooth chip flow even as the lead angle varies with the depth of cut, reducing cutting resistance and preventing vibration on larger workpieces.
Recommended Cutting Parameters
Optimized for Steel Finishing (P05 - P25)
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Rev ($f$) |
|---|---|---|
| Low Carbon Steel (S15C) | 150 - 450 m/min | 0.10 - 0.35 mm/rev |
| Alloy Steel (SCM440) | 120 - 350 m/min | 0.08 - 0.25 mm/rev |
| Grey Cast Iron | 150 - 300 m/min | 0.15 - 0.40 mm/rev |
SRDC / SRGC HOLDER SYSTEM
The RCMX1204MO is compatible with Mitsubishi SRDC turning tool holders for heavy-duty finishing.
Shop Tool Holders →Metric vs. Inch Cross-Reference
| Feature | Metric Designation | Inch Designation (Approx.) |
|---|---|---|
| Diameter | 12 (12.0 mm) | 4 (4/8" or 0.472") |
| Thickness | 04 (4.76 mm) | 3 (3/16" or 0.187") |
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.