KORLOY DNMG150604-VF NC3120 Indexable Carbide Turning Inserts | DNMG621-VF NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for Precision Steel & Alloy Steel Finishing - 10pcs/box
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KORLOY DNMG150604-VF NC3120 Indexable Carbide Turning Inserts | DNMG621-VF NC3120 (ANSI Equivalent) CVD Coated Carbide Inserts for Precision Steel & Alloy Steel Finishing - 10pcs/box
High-Performance ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring NC3120 Tough CVD Coated Substrate and -VF Sharp Finishing Chipbreaker for Superior Carbon Steel, Alloy Steel, and Mold Steel Precision Turning
1. Product Overview
"Which indexable turning insert provides exceptional edge sharpness and superior wear resistance for high-precision finishing and light-depth profiling of carbon and alloy steels?" CNC programmers and manufacturing engineers frequently specify the KORLOY DNMG150604-VF NC3120. This industrial-grade cutting insert couples KORLOY's reliable NC3120 multi-layer CVD coated carbide grade with a sharp, positive -VF precision finishing chipbreaker geometry. Built upon a rugged 55° rhombic negative platform featuring a heavy-duty 6.35mm thickness ('06') and a tight 0.4mm corner radius, it delivers low cutting resistance, minimal burr formation, and outstanding dimensional accuracy on precision steel components.
2. Product Key Features
- NC3120 High-Performance CVD Grade: Engineered with a wear-resistant multi-layer CVD coating on a robust carbide substrate, optimized for high thermal stability and extended tool life during steel turning.
- -VF Sharp Finishing Chipbreaker & 0.4mm Radius: Features a ground sharp rake face geometry designed to reduce cutting forces and prevent vibration, paired with a precise 0.4mm corner radius for fine contouring and tight tolerance finishing.
- Rigid 6.35mm Thickness Profile: The heavy-duty 6.35mm thickness ('06') enhances insert strength and thermal dissipation, ensuring stability during demanding finishing passes.
- Factory Sealed Box Packaging: Supplied in original KORLOY protective packaging containing 10 precision indexable inserts.
3. Technical Specifications & Model Breakdown
Review the complete technical specifications, metric-to-imperial equivalents, and ISO coding designation breakdown below.
Metric vs. Imperial Designation Comparison
| Specification Parameter | Metric Standard (ISO) | Imperial Equivalent (ANSI) |
|---|---|---|
| Primary Insert Model | DNMG150604-VF NC3120 | DNMG621-VF NC3120 |
| Inscribed Circle (IC) | 15.5 mm | 0.593 in (~19/32") |
| Insert Thickness (S) | 6.35 mm | 0.250 in (1/4") |
| Corner Radius (r) | 0.4 mm | 0.0157 in (~3/64") |
Recommended Cutting Parameters (Feed & Speed)
| Workpiece Material Group | Cutting Speed (vc) m/min | Feed Rate (f) mm/rev |
|---|---|---|
| Carbon Steels & Alloy Steels (P Series) - Precision Finishing | 180 - 320 | 0.05 - 0.20 |
| Tool Steels & Mold Steels (P Series) - Fine Machining | 140 - 240 | 0.04 - 0.16 |
Looking for high-rigidity external turning toolholders or internal boring bars engineered for secure DNMG 1506 insert clamping?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG150604-VF NC3120 insert is engineered for precision turning operations:
- Precision Mold & Die Manufacturing: Fine contouring and finishing of alloy steel core inserts, cavity blocks, and guide pillars.
- Automotive Transmission Components: Tight-tolerance finishing of precision gear shafts, spindles, and bearing journals.
- General Mechanical Engineering: High-accuracy external profiling and light finishing passes on high-tensile steel shafts.
5. Compatibility
Designed to fit standard ISO negative turning toolholder configurations:
- Toolholders: Fully compatible with ISO standard DDJNR/L, MDJNR/L, and PDJNR/L turning toolholders and boring bars configured for 1506 insert sizes.
- Machine Equipment: Ideal for high-precision CNC lathes, turning centers, and ultra-rigid finishing setups.
6. Material Comparison & Workpiece Matrix
Review grade suitability across ISO workpiece material classifications for precision steel finishing.
| ISO Material Category | Target Materials | NC3120 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steels, alloy steels, tool steels, pre-hardened steels (C45, 4140, P20) | Optimal (Specialized CVD Grade P05–P20) |
| K (Cast Iron) | Gray cast iron, nodular cast iron (HT250, QT500) | Secondary Application (K10–K25) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch quality and peak machining performance.
Fast Global Logistics
Extensive stock ready for immediate dispatch via reliable international shipping networks to keep your manufacturing schedule on track.
Technical Expertise
Backed by professional tooling engineers ready to assist with cutting parameter optimization and application troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: How many inserts are included in one standard factory box?
A: Each original factory box contains exactly 10 pieces of DNMG150604-VF NC3120 inserts.
Q: What is the specific benefit of the 0.4mm corner radius and -VF chipbreaker?
A: The 0.4mm corner radius ('04') combined with the sharp -VF finishing geometry allows for tighter corner profiling, reduced radial cutting forces, and exceptional surface finish quality on steel parts.
Q: Are these indexable inserts fully compliant with ISO and ANSI standards?
A: Yes, all KORLOY turning inserts comply strictly with international ISO and ANSI dimensional and coding standards for guaranteed compatibility.
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
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.