Mitsubishi VBMT160408-MV NX2525 | Cermet Steel Turning Insert
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VBMT160408-MV NX2525
Mitsubishi Materials | High-Speed Steel Finishing & Mirror Surface Texture
Precision Cermet Performance with Enhanced Edge Strength
The Mitsubishi VBMT160408-MV NX2525 is a 35° diamond Cermet turning insert designed for high-speed finishing where surface integrity is paramount. Unlike standard carbide, the NX2525 Cermet grade has a low affinity for steel, effectively eliminating Built-Up Edge (BUE). With its reinforced 0.8mm corner radius and MV (Medium-V) chipbreaker, this long-tail finishing insert allows for higher feed rates while maintaining the legendary "mirror finish" associated with Mitsubishi cermet technology.
NX2525 Cermet Grade | MV Medium-Duty Breaker | 0.8mm Radius for Feed Stability
Technical Code Identification
35° Diamond
5° Relief Angle
M-Class Tolerance
Hole with 60° Countersink
16mm Edge
4.76mm Thick
0.8mm Radius
Medium Breaker
ISO (Metric) vs ANSI (Inch) Comparison
| Feature Spec | ISO (Metric) | ANSI (Inch Equivalent) |
|---|---|---|
| Model Number | VBMT160408-MV | VBMT 332-MV |
| Inscribed Circle (IC) | 9.525 mm | 0.375" (3/8") |
| Corner Radius | 0.8 mm | 0.0315" (1/32") |
NX2525 Cermet Advantage
The NX2525 grade is a non-coated Cermet that provides exceptional oxidation resistance. Its chemical inertness makes it the best finishing insert for carbon and alloy steels, as it prevents the "smearing" of material on the tool tip. This results in significantly longer tool life during high-speed finishing and maintains critical tolerances in CNC lathe operations.
MV Medium-V Chipbreaker
The MV chipbreaker is designed for versatility. By pairing it with a 0.8mm radius, you gain the ability to increase your feed rate without compromising chip control. The 16mm edge ($VBMT 332$) provides the necessary rigidity to handle the slightly higher cutting forces required for medium-depth profiling in steel and ductile irons.
Recommended Cutting Parameters
| Material Group | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Low Carbon Steel (A36/1018) | 180 - 400 m/min | 0.10 - 0.30 mm/rev | 0.3 - 2.0 mm |
| Alloy Steel (4140/8620) | 150 - 320 m/min | 0.08 - 0.25 mm/rev | 0.3 - 1.5 mm |
COMPATIBLE HOLDERS
Designed for SVJBR/L 16 or SVVBN 16 external holders and heavy-duty Internal Boring Bars.
Shop 16mm Profiling Holders →
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.