KORLOY DNMG110408-HM NC3020 Indexable Carbide Turning Inserts | DNMG322-HM NC3020 (ANSI Equivalent) CVD Coated Inserts for Steel and Alloy Machining - 10pcs/box
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KORLOY DNMG110408-HM NC3020 Indexable Carbide Turning Inserts | DNMG322-HM NC3020 (ANSI Equivalent) CVD Coated Inserts for Steel Machining - 10pcs/box
High-Performance ISO-Standard 55° Rhombic Negative Indexable Turning Cutters Featuring NC3020 Advanced CVD Coated Carbide Substrate and -HM Medium Chipbreaker for Superior Wear Resistance in Carbon Steel and Alloy Steel Machining
1. Product Overview
"Which indexable turning insert offers high wear resistance, thermal stability, and excellent chip control for general steel turning and facing operations?" Advanced manufacturing engineers and CNC operators frequently select the KORLOY DNMG110408-HM NC3020. This industrial-grade cutting insert combines KORLOY's specialized NC3020 CVD coated carbide grade with a dependable -HM chipbreaker geometry. Built upon a 55° rhombic negative platform featuring a 3.97mm thickness ('04') and a robust 0.8mm corner radius, it provides high edge strength, prevents plastic deformation under high cutting loads, and delivers exceptional tool life across carbon steel, alloy steel, and cast iron turning applications.
2. Product Key Features
- NC3020 Advanced CVD Carbide Grade: Engineered with a wear-resistant multi-layer CVD coating over a tough carbide substrate designed to withstand high temperatures and abrasive wear during continuous and light interrupted steel cutting.
- -HM Medium Chipbreaker & 0.8mm Radius: Features an optimized positive rake geometry for smooth chip evacuation during general turning, paired with a strong 0.8mm corner radius to handle higher feed rates and enhanced edge durability.
- Compact 3.97mm Thickness: Standardized '04' insert thickness class for the 11-series guarantees exact clamping stability, high rigidity, and reliable repeatability under demanding machining parameters.
- Factory Sealed Box Packaging: Supplied in authentic KORLOY packaging containing 10 precision indexable inserts.
3. Technical Specifications & Model Breakdown
Examine the 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 | DNMG110408-HM NC3020 | DNMG322-HM NC3020 |
| Inscribed Circle (IC) | 11.6 mm | 0.375 in (3/8") |
| Insert Thickness (S) | 3.97 mm | 0.156 in (5/32") |
| 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 & Alloy Steels (P Series) - General Turning & Roughing | 180 - 320 | 0.15 - 0.35 |
| Cast Iron (K Series) - Continuous Cutting | 150 - 270 | 0.12 - 0.30 |
Looking for precision external turning toolholders or boring bars designed for secure DNMG 1104 insert clamping?
Explore Compatible External Turning Tool Holders & Boring Bars4. Product Application Scenarios
The KORLOY DNMG110408-HM NC3020 insert provides robust performance across general industrial turning operations:
- General Mechanical Drive Shafts: High-efficiency roughing and semi-finishing of carbon steel industrial shafts.
- Automotive Powertrain Parts: Stable turning of forged steel components under continuous cutting conditions.
- Industrial Gear Blanks: Reliable facing and contour turning of alloy steel gear blanks.
5. Compatibility
Engineered to integrate seamlessly with standard ISO negative turning toolholders:
- Toolholders: Fully compatible with ISO standard DDJNR/L, MDJNR/L, and PDJNR/L external turning toolholders and boring bars configured for 1104 inserts.
- Machine Equipment: Optimized for conventional CNC lathes, heavy-duty turning centers, and automated manufacturing cells.
6. Material Comparison & Workpiece Matrix
Evaluate CVD carbide grade appropriateness across ISO workpiece material categories for general steel and cast iron turning operations.
| ISO Material Category | Target Materials | NC3020 Performance Suitability |
|---|---|---|
| P (Steel) | Carbon steel, alloy steel, low-alloy structural steel (1045, 4140, 20CrMnTi) | Optimal (General Turning P20–P35) |
| K (Cast Iron) | Gray cast iron and ductile cast iron (HT200, QT400) | Effective (Continuous Machining K15–K30) |
7. Why Choose Us
100% Genuine Guarantee
Sourced directly from authorized industrial distribution channels, guaranteeing verified batch quality and dependable carbide cutting performance.
Fast Global Logistics
Comprehensive inventory prepared for immediate dispatch through established international logistics networks to prevent shop downtime.
Technical Expertise
Supported by experienced tooling specialists ready to assist with feed/speed optimization and process troubleshooting.
8. Frequently Asked Questions (FAQ)
Q: How many carbide inserts are contained in a standard factory box?
A: Each original factory box contains exactly 10 pieces of DNMG110408-HM NC3020 inserts.
Q: What is the advantage of the 0.8mm corner radius compared to a 0.4mm radius?
A: The 0.8mm corner radius provides greater edge strength and allows for higher feed rates, making it ideal for general turning and roughing passes where edge durability is critical.
Q: Are these indexable inserts fully compatible with standard ISO and ANSI toolholders?
A: Yes, they are manufactured strictly to ISO and ANSI international standards to ensure secure seating in any standard negative turning holder.
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.