Korloy DNMG110408-HM NC3030 Tough Steel Turning Insert, R0.8 (10pcs)
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The Original Korloy DNMG110408-HM NC3030 (ANSI Standard: DNMG 332) is the ultimate problem-solver for unstable steel turning applications. Designed with a robust 0.8mm nose radius, this insert offers maximum edge strength for semi-finishing and medium-duty cutting. The NC3030 grade is Korloy's premier high-toughness CVD solution, specifically engineered to withstand heavy interrupted cuts, forged surfaces, and mechanical shocks that would shatter standard inserts.
Maximum Edge Security: If your project involves turning shafts with keyways, hexagonal bars, or workpieces with rough "black" outer skins, the NC3030 in an R0.8 radius provides the necessary durability to keep your machine running without unexpected downtime.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG110408-HM |
| ANSI Code | DNMG 332 |
| Grade | NC3030 (Maximum Toughness CVD) |
| Nose Radius | 0.8 mm (Enhanced Shock Resistance) |
Core Performance Benefits:
- Shock-Absorbent Substrate: Prevents crack propagation even during violent mechanical interruptions.
- R0.8 Edge Strength: The larger radius dissipates heat more effectively and supports higher feed rates than R0.4 models.
- Advanced CVD Coating: Resists peeling and built-up edge, even when machining gummy low-carbon or structural steels.
- 4 Cutting Edges: Double-sided negative geometry offers high cost-performance for roughing and semi-finishing.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Steel with Heavy Interruption | 100 - 180 m/min | 0.15 - 0.35 mm/rev | 0.8 - 3.5 mm |
| Forged/Cast Steel (Rough Surface) | 80 - 160 m/min | 0.12 - 0.30 mm/rev | 1.0 - 4.0 mm |
| Carbon Steel (General Duty) | 140 - 240 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.5 mm |
Compatible Tool Holders:
Compatible with all standard 55° negative holders (11-size pocket):
- External Turning: DDJNR/L 2020K11 / 2525M11 / 3232P11
- Heavy Boring Bars: S25S-DDUNR11 / S32T-DDUNR11
The "Toughness" Scale: NC3030 vs. NC3120
Which reliable grade should you choose for steel?
The "Safety Grade". Use this for the most violent interruptions, forged skins, and unstable setups. It prevents the insert from snapping, even if it means running at slightly lower speeds.
The "All-Rounder". Best for general turning with light interruptions. It offers a higher wear resistance than NC3030 while still being tougher than the high-speed NC3020.
Machinist's Pro Tip: If you are working on a manual lathe or a CNC with low rigidity, NC3030 is your best friend. Its forgiving nature prevents edge micro-chipping that often occurs with harder grades.
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.