Mitsubishi SPMW090308 NX2525 | Mirror Finish Cermet Insert
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SPMW090308 NX2525
Mitsubishi Materials | High-Speed Mirror Finishing Specialist
The Mitsubishi SPMW090308 NX2525 is an industry-leading cermet milling insert designed for precision finishing. By utilizing the NX2525 uncoated cermet grade, this insert provides a chemical stability that traditional tungsten carbide cannot match. It is engineered to produce a high-gloss surface finish on carbon and alloy steels, effectively eliminating built-up edge (BUE) during high-speed dry milling finishing operations.
Designation Decoding
Square
11° Relief
M-Class Tol.
Countersink
9.525mm Size
3.18mm Thick
0.8mm Rad.
Technical Specifications
| Parameter | ISO (Metric) | ANSI (Inch) Equivalent |
|---|---|---|
| Model Number | SPMW090308 | SPMW 32.52 |
| Inscribed Circle ($IC$) | 9.525 mm | 0.375" |
| Thickness ($S$) | 3.18 mm | 0.125" |
| Nose Radius ($RE$) | 0.8 mm | 0.031" |
Material: NX2525 Cermet Grade
The NX2525 grade is a premium micro-grain uncoated cermet (Ceramic + Metal). Cermets are chemically inert, meaning they do not react with steel at high temperatures. This prevents crater wear and adhesion, allowing the SPMW090308 to maintain a sharp edge much longer than coated carbide during high-speed steel milling.
Geometry: Flat-Top Finishing (W-Style)
The W-Type geometry refers to the countersunk hole for screw-on clamping. This insert features a sharp edge finishing geometry without a molded chipbreaker, providing a low-resistance shearing action. The 0.8mm radius ($RE$) is optimized for balancing edge strength with a high-quality surface profile ($Ra$).
Recommended Cutting Parameters
| Material Category | Cutting Speed ($v_c$) | Feed per Tooth ($f_z$) |
|---|---|---|
| Carbon Steel / Alloy Steel | 180 - 350 m/min | 0.08 - 0.18 mm/t |
| Gray Cast Iron | 150 - 280 m/min | 0.10 - 0.25 mm/t |
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.