KORLOY DNMG150408-VF NC3120 Indexable Carbide Turning Inserts | DNMG542-VF NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel & Alloy Steel Finishing - 10pcs/box
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KORLOY DNMG150408-VF NC3120 Indexable Carbide Turning Inserts | DNMG542-VF NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for Steel & Alloy Steel Finishing - 10pcs/box
High-Performance ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring NC3120 Advanced CVD Coated Carbide Substrate and -VF Low-Feed Finishing Chipbreaker for Superior Steel & Alloy Steel Precision Finishing
1. Product Overview
"Which indexable turning insert is ideal for precision low-feed finishing and tight-tolerance profiling of carbon steel, alloy steel, and structural steel components?" CNC machinists and manufacturing engineers consistently select the KORLOY DNMG150408-VF NC3120. This industrial-grade finishing insert integrates KORLOY's specialized NC3120 advanced CVD coated carbide substrate engineered to maximize wear resistance and edge stability during continuous finishing operations, combined with a sharp -VF chipbreaker geometry designed specifically for light cutting depths and low feed rates. It delivers exceptional dimensional accuracy and a mirror-like surface finish in high-precision production environments. Built on a rigid 55° rhombic negative profile with 4 indexable cutting edges and a reliable 0.8mm corner radius, it guarantees superior structural consistency and dependable performance.
2. Product Key Features
- NC3120 Advanced CVD Grade: Features a high-performance chemical vapor deposition (CVD) multi-layer coating optimized for steel and alloy steel finishing, providing exceptional flank wear resistance and thermal stability.
- -VF Low-Feed Finishing Chipbreaker & 0.8mm Radius: Combines a sharp positive rake angle geometry tailored for light finishing with a sturdy 0.8mm corner radius for stable continuous cutting.
- Double-Sided Indexable Economy: Rhombic negative configuration provides 4 total indexable cutting edges (2 per side), maximizing cost efficiency per edge.
- Standard Industrial Packaging: Supplied in secure factory containers containing 10 pieces for seamless tool inventory tracking.
3. Technical Specifications & Model Breakdown
Review the comprehensive technical parameters, metric-to-imperial cross-references, and ISO nomenclature breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | DNMG150408-VF NC3120 | DNMG542-VF NC3120 |
| Inscribed Circle (IC) | 15.5 mm | 0.593 in (~19/32") |
| Insert Thickness (S) | 4.76 mm | 0.1875 in (3/16") |
| Corner Radius (r) | 0.8 mm | 0.0315 in (~1/32") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steel & Low Alloy Steel (1045, 4140) | 200 - 350 | 0.08 - 0.22 |
| Alloy Steel & Tool Steel (P20, SKD61) | 150 - 280 | 0.06 - 0.18 |
Need matching DDJNR/L or MDJNR/L external turning toolholders or boring bars for your DNMG 1504 inserts?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG150408-VF NC3120 insert is engineered for high-precision finishing and tight-tolerance profiling across specialized industrial sectors:
- Precision Machinery Spindles: Finishing high-tolerance bearing journals and precision shaft shoulders on alloy steel forgings.
- Automotive Transmission Parts: Executing fine finishing passes on close-tolerance gear blanks and input shafts.
- Hydraulic Cylinders: Machining smooth internal and external diameters on carbon steel actuator rods.
5. Compatibility
Designed for seamless integration with standard ISO negative toolholding configurations:
- Toolholders: Compatible with standard DDJNR/L, MDJNR/L, and PDJNR/L lever-lock and screw-clamp external turning toolholders and boring bars built for DNMG 1504 geometry.
- Machine Equipment: Fully compatible with high-speed CNC turning centers, precision lathes, and automated finishing cells.
6. Material Comparison & Workpiece Matrix
Examine grade application suitability across ISO workpiece material classifications.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steels, alloy steels, and structural steels (e.g., 1045, 4140, S45C) | Optimal (Primary CVD Grade for Steel Finishing P10–P25) |
| K (Cast Iron) | Gray cast iron and ductile iron (e.g., HT250, FCD450) | Suitable (Light finishing operations under stable conditions) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch authenticity and consistent cutting performance.
Fast Global Logistics
Maintained warehouse stock and streamlined international shipping networks ensure rapid dispatch to eliminate production downtime.
Technical Expertise
Backed by professional CNC application engineers available to provide customized cutting data recommendations and troubleshooting support.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are included in each box?
A: Each standard factory box contains exactly 10 pieces of DNMG150408-VF NC3120 inserts.
Q: What workpiece materials are ideal for the NC3120 grade?
A: NC3120 is an advanced CVD coated grade engineered specifically for precision finishing and semi-finishing of carbon and alloy steels.
Q: Which toolholders fit this DNMG 1504 insert?
A: It fits standard ISO negative turning toolholders designed for DNMG 1504 geometry, such as DDJNR or MDJNR external toolholder bars and boring tools.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.