Korloy DNMG110408-HM NC3120 Universal Steel Turning Insert, R0.8 (10pcs)
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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.