Mitsubishi CCMT120408 NX2525 Cermet Insert 0.8mm Radius (10pcs)
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CCMT120408 NX2525
High-Productivity Finishing | NX2525 Cermet | 0.8mm Radius
Engineering Analysis
NX2525 Grade (TiCN Cermet): NX2525 is a non-coated Titanium Carbonitride-based cermet. Unlike tungsten carbide, this material is chemically inert to steel, meaning it resists Built-Up Edge (BUE) even at high cutting temperatures. It is the premier grade for achieving polished-quality surface finishes directly during the turning process, eliminating the need for grinding.
0.8mm Radius (The Productivity Edge): The large 0.8mm (1/32") corner radius significantly strengthens the cutting edge. It allows for a broader Wiping Effect—you can run at much higher feed rates (mm/rev) without the "threaded" surface appearance typical of smaller radii, drastically reducing cycle times for large parts.
Metric vs. Imperial Specifications
| Unit System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CCMT120408 | 12.70 mm | 4.76 mm | 0.80 mm |
| Imperial | CCMT432 | 0.500" (1/2") | 0.187" (3/16") | 0.0315" (1/32") |
High-Feed Cutting Parameters
*The 1204 size class offers superior rigidity. Best surface results are achieved with dry machining or high-speed finishing.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon Steel (S45C) | 180 - 380 m/min | 0.10 - 0.35 mm/r | 0.30 - 2.50 mm |
| Alloy Steel (4140) | 150 - 320 m/min | 0.10 - 0.30 mm/r | 0.30 - 2.00 mm |
Compatible Tool Holders
Standard fit for SCLCR/L 12 external tools and heavy-duty S-SCLCR boring bars:
Shop SCLCR 12 HoldersPro-Tip: Choosing the Right Grade
NX2525 (Cermet): The ultimate choice for Steel finishing where surface gloss is the priority. It offers the best wear resistance in continuous cuts.
AP25N (Cermet): Switch to AP25N if you have Light Interrupted Cuts. It is slightly tougher and less prone to chipping than NX2525.
VP15TF (PVD Carbide): Use carbide only for Stainless Steel or Heavy Interruptions. Cermet will out-perform carbide in speed and finish on all carbon/alloy steels.
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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.