Mitsubishi CNMG120404-SH NX2525 Cermet Finishing Insert (10pcs)
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CNMG120404-SH NX2525
High-Gloss Finishing | NX2525 Cermet Technology | SH Stability Geometry
Precision Engineering for Superior Aesthetics
NX2525 Grade (Ultra-Micro Cermet): NX2525 is an uncoated TiCN-based cermet grade. It provides a unique combination of high wear resistance and toughness. Unlike traditional carbide, cermet maintains a chemically inert edge at high speeds, which prevents the workpiece material from welding to the tip. This results in the high-gloss "mirror" finish required in automotive and precision instrument components.
SH Chipbreaker (The Versatile Finisher): The SH geometry is the standard choice for finishing. It features a slightly stronger edge than the FH series, allowing it to handle minor interruptions and fluctuating depths of cut while maintaining excellent chip evacuation and low cutting resistance.
0.4mm (1/64") Precision Radius: The 04 radius is optimized to reduce radial cutting forces. This is critical for preventing chatter on long, slender parts and achieving tight dimensional tolerances on final passes.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-SH | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-SH | 1/2" | 3/16" | 0.0157" (1/64") |
Finishing Cutting Parameters
*Cermet performs best at high speeds. Lower speeds may cause edge chipping. Use light depths of cut for best Ra values.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild Steel / Carbon Steel | 200 - 450 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Alloy Steel / Tool Steel | 150 - 300 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.20 mm |
Compatible Tool Holders
Maximum rigidity ensures the best cermet performance. Use DCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: NX2525 vs. AP25N
NX2525 (High Precision): Use this uncoated grade for the absolute best surface gloss and when machining soft/sticky steels that prone to sticking.
AP25N (High Production): Switch to AP25N (Coated Cermet) if you need higher wear resistance for longer production runs or slightly more toughness for semi-finishing.
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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.