Korloy DNMG110408-HM NC3120 Universal 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 NC3120 (ANSI Standard: DNMG 332) is the industry-standard choice for versatile steel turning operations. Featuring a robust 0.8mm nose radius, this insert offers a perfect balance between surface finish quality and cutting edge strength. The NC3120 grade is Korloy's most popular "Universal" CVD solution, specifically developed to bridge the gap between high-speed finishing (NC3020) and heavy-duty interrupted cutting (NC3030).
The Workshop Workhorse: NC3120 is engineered for reliability. Whether you are turning carbon steel, alloy steel, or structural steel under varying conditions, this insert provides stable tool life and predictable performance.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG110408-HM |
| ANSI Code | DNMG 332 |
| Grade | NC3120 (Universal CVD for Steel) |
| Nose Radius | 0.8 mm (Enhanced Versatility) |
Core Performance Benefits:
- Broad Application Range: Excels in both continuous and light-to-medium interrupted turning.
- Superior Thermal Stability: The advanced multi-layer CVD coating allows for consistent results even as heat builds up during long passes.
- High Edge Security: The R0.8 geometry is resistant to chipping, making it ideal for semi-finishing tasks on uneven surfaces.
- Exceptional Chip Control: The HM chipbreaker provides excellent chip breaking over a wide range of feed rates and depths of cut.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (1045 / S45C) | 150 - 320 m/min | 0.15 - 0.35 mm/rev | 0.8 - 3.5 mm |
| Alloy Steel (4140 / SCM440) | 120 - 240 m/min | 0.12 - 0.30 mm/rev | 0.5 - 3.0 mm |
| Structural Steel / SS400 | 180 - 350 m/min | 0.15 - 0.40 mm/rev | 1.0 - 4.0 mm |
Compatible Tool Holders:
Fits all standard 55-degree negative holders (11-size pocket):
- External Turning: DDJNR/L 2020K11 / 2525M11 / 3232P11
- Boring Bars: S25S-DDUNR11 / S32T-DDUNR11
Steel Grade Choice: Why NC3120?
Finding the "Sweet Spot" in Korloy's steel turning lineup:
Choose for high-volume, continuous finishing where speed is priority.
The best all-rounder for varied jobs. Handles most steels with ease.
Choose for heavy scale, severe interruptions, or very unstable machines.
Machinist's Insight: For the DNMG110408, the NC3120 is the most forgiving grade. It doesn't chip as easily as NC3020 and lasts longer in continuous cuts than NC3030. It is the perfect balance for any CNC shop.
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.