Korloy DNMG110408-HM NC3020 Steel Turning Insert, R0.8 (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy DNMG110408-HM NC3020 (ANSI Standard: DNMG 332) is a high-performance 55° diamond insert designed for efficient semi-finishing and medium-duty turning of Steel (P). Featuring a robust 0.8mm nose radius, this insert provides superior edge strength and thermal dissipation compared to smaller radii models. The NC3020 CVD grade is engineered for high-speed continuous cutting, offering industry-leading resistance to crater wear and maintaining long-term dimensional stability in carbon and alloy steels.
High-Feed Efficiency: The R0.8 radius (DNMG 332) allows for significantly higher feed rates without compromising edge security. It is the ideal choice for high-volume production where reducing cycle time is as important as surface quality.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG110408-HM |
| ANSI Code | DNMG 332 |
| Grade | NC3020 (High-Speed CVD for Steel) |
| Nose Radius | 0.8 mm (Enhanced Durability) |
Core Performance Benefits:
- Maximum Edge Security: The R0.8 geometry handles mechanical shock better than R0.4, making it more durable in long-run production.
- Optimized HM Chipbreaker: Engineered for semi-finishing, ensuring stable chip breaking even at higher feed rates and varying depths of cut.
- CVD Coating Excellence: NC3020's advanced coating acts as a thermal barrier, allowing for elevated cutting speeds (Vc) in dry or wet conditions.
- Four Cutting Edges: The negative DNMG geometry offers 4 usable edges, providing excellent economic value per component.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Mild Steel (Low Carbon) | 180 - 350 m/min | 0.15 - 0.35 mm/rev | 0.8 - 3.5 mm |
| Alloy Steel (4140 / 4340) | 150 - 280 m/min | 0.12 - 0.30 mm/rev | 0.5 - 3.0 mm |
| Die Steel / Tool Steel | 100 - 220 m/min | 0.15 - 0.32 mm/rev | 1.0 - 4.0 mm |
Compatible Tool Holders:
Fits all standard 55-degree negative holders with 11-size pockets:
- External Tool Holders: DDJNR/L 2020K11 / 2525M11 / 3232P11
- Internal Boring Bars: S25S-DDUNR11 / S32T-DDUNR11
Steel Machining Pro-Tip: R0.8 vs. R0.4
Which nose radius should you choose for DNMG 11?
Best for Efficiency & Strength. It allows for much higher feed rates and is less likely to chip. Ideal for semi-finishing larger parts where cycle time reduction is key.
Best for Precision & Low Pressure. Choose R0.4 if you need a finer surface finish at lower feed rates or if you are working with slender workpieces prone to vibration.
Machinist's Insight: For general semi-finishing of steel, the DNMG110408 in NC3020 is the most balanced choice for high-speed CNC turning.
Packaging: 10 pieces per box.
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.