Mitsubishi CNMG120404-FH NX2525 Cermet Finishing Insert (10pcs)
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CNMG120404-FH NX2525
Mirror Finish Specialist | NX2525 Micro-Grain Cermet | FH Precision Geometry
The Pinnacle of Surface Integrity
NX2525 Grade (Uncoated Cermet): The NX2525 is a high-performance cermet (ceramic-metal composite) grade. Unlike coated carbides, this uncoated cermet maintains a much sharper cutting edge for a longer duration. Its high resistance to Built-up Edge (BUE) and superior chemical stability at high temperatures ensure that your workpiece achieves a brilliant, glossy finish without the dulling effect of traditional carbide.
FH Chipbreaker (Fine Finish Power): The FH geometry is a "sharp-edge" design. It is optimized for light depths of cut where chip control is usually difficult. The FH breaker curls the chip tightly even at feed rates as low as 0.05mm, preventing "stringers" from scratching your finished surface.
0.4mm (1/64") Precision Radius: The small 04 radius minimizes cutting resistance and tool pressure. This is essential for preventing vibration on small-diameter parts and achieving tight tolerances on final finishing passes.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-FH | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-FH | 1/2" | 3/16" | 0.0157" (1/64") |
Precision Finishing Parameters
*NX2525 requires stable setups. Higher speeds yield better gloss. Avoid heavy interruptions or heavy depths of cut.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Low/Medium Carbon Steel | 180 - 450 m/min | 0.04 - 0.18 mm/r | 0.10 - 0.80 mm |
| Alloy Steel (Hardened) | 120 - 300 m/min | 0.04 - 0.15 mm/r | 0.10 - 0.60 mm |
Compatible Tool Holders
For high-gloss finishing, use DCLNR/L 12 series holders with high clamping rigidity:
Shop DCLNR 12 HoldersPro-Tip: Cermet NX2525 vs. AP25N
NX2525 (High Precision): The uncoated cermet choice for maximum surface gloss and dimensional precision. Perfect for high-speed continuous finishing.
AP25N (Coated Cermet): Choose AP25N when you need slightly more wear resistance at higher speeds or for light semi-finishing tasks where the tool life of uncoated cermet might be limited.
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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.