Mitsubishi VNMG160404 NX2525 Cermet Insert | VNMG 331
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Mitsubishi VNMG160404 NX2525
High-Precision Cermet Grade for Mirror-Finish Steel Turning
The Mitsubishi VNMG160404 NX2525 is a premium 35° rhombic negative cermet turning insert. Engineered specifically for the high-speed finishing of steel, the NX2525 grade provides an exceptional mirror-like surface finish. Unlike standard carbide, this cermet tool offers superior chemical stability, significantly reducing built-up edge (BUE) and ensuring long-term dimensional accuracy for your CNC lathe operations.
Detailed Model Nomenclature
Decoding the precision engineering behind the VNMG160404 model code:
| Code | Detailed Specification |
|---|---|
| V | Shape: 35° Rhombic (Diamond) |
| N | Clearance Angle: 0° (Negative Insert) |
| M | Tolerance Class: Medium Precision Ground |
| G | Feature: Double-Sided with Hole |
| 16 | Size: ~16mm Cutting Edge Length |
| 04 | Thickness: 4.76mm |
| 04 | Nose Radius: 0.4mm (Super Fine Finishing) |
Global Interchangeability: ISO vs. ANSI
This precision finishing tool is recognized internationally under both ISO and ANSI standards:
- ISO (Metric): VNMG160404
- ANSI (Imperial): VNMG 331
NX2525 Grade & SH Geometry
NX2525 Cermet Grade: Mitsubishi’s NX2525 is a micro-grain cermet (Ceramic + Metal) that provides the perfect balance of toughness and flank wear resistance. It is the premier choice for dry machining of steel where high surface gloss is mandatory.
Stable Geometry: The 35° V-shape provides the necessary clearance for intricate profiles and precision turning. When used with a finishing chipbreaker, it ensures excellent chip control even at light depths of cut.
Recommended Cutting Parameters
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (P10-P20) | 150 - 350 m/min | 0.05 - 0.20 mm/rev | 0.2 - 1.5 mm |
| Alloy Steel (Finishing) | 120 - 280 m/min | 0.05 - 0.15 mm/rev | 0.2 - 1.2 mm |
System Integration
Ensure maximum stability for mirror-finishing by pairing this VNMG 331 insert with our high-rigidity tool holders.
Shop Compatible DVJNR/L Tool HoldersPro-Tip: Grade Selection Advice
NX2525 Cermet is superior to carbide for high-gloss finishing because it maintains a sharp edge and resists chemical welding. However, if your application involves heavy interrupted cuts or roughing, we recommend switching to UE6110 or MC6025 carbide grades for better impact resistance.
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.