Mitsubishi VNGG160404R-F NX2525 Cermet Insert | VNGG 331
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Mitsubishi VNGG160404R-F NX2525
Professional Cermet Grade for Ultra-Precision Finishing
The Mitsubishi VNGG160404R-F NX2525 is a high-precision 35° rhombic negative-type cermet turning insert specifically engineered for the finishing of steel and ductile cast iron. Utilizing the advanced NX2525 cermet grade, this insert provides exceptional resistance to oxidation and metal welding, ensuring a mirror-like surface finish. As a dedicated precision turning tool, it is the industry standard for CNC lathe finishing where dimensional accuracy is critical.
Technical Nomenclature Explained
Understanding the precision behind the VNGG160404R-F identification code:
| Code | Detailed Specification |
|---|---|
| V | Shape: 35° Rhombic (Diamond) |
| N | Clearance Angle: 0° (Negative) |
| G | Tolerance Class: High Precision Ground Grade |
| G | Feature: Double-Sided with Hole |
| 16 | Size: ~16mm Cutting Edge Length |
| 04 | Thickness: 4.76mm |
| 04 | Nose Radius: 0.4mm (Fine Finishing) |
| R-F | Right Hand / F-Breaker (Finishing Geometry) |
Global Interchangeability: ISO vs. ANSI
This VNGG insert follows international standards for CNC machining:
- ISO (Metric): VNGG160404R-F
- ANSI (Imperial): VNGG 331R-F
NX2525 Grade & F-Breaker Details
NX2525 Cermet Material: Cermet (Ceramic-Metal) is known for its high chemical stability. The NX2525 grade is a non-coated cermet that excels in stable cutting conditions. It prevents built-up edge (BUE), which is critical for maintaining a high-gloss surface finish on alloy steels.
F-Breaker Geometry: The F-type chipbreaker is a precision-ground finishing breaker. It is designed for low depths of cut, ensuring excellent chip control and reducing cutting resistance, which minimizes vibrations in slender workpieces.
Cutting Parameters (Recommended)
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel | 150 - 350 m/min | 0.05 - 0.15 mm/rev | 0.1 - 1.0 mm |
| Alloy Steel | 100 - 250 m/min | 0.05 - 0.12 mm/rev | 0.1 - 0.7 mm |
System Integration
For maximum rigidity, use this VNGG insert with compatible tool holders.
Shop Compatible DVJNR/L Tool HoldersPro-Tip: Grade Selection Advice
NX2525 is the premier choice for high-speed finishing of steel where surface gloss is the priority. However, if your application involves interrupted cutting or stainless steel, we recommend switching to VP15TF (PVD Carbide) for its superior toughness and 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.