Korloy DNMG150604-HM NC3120 Thick Universal Steel Finishing Insert (10pcs)
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The Original Korloy DNMG150604-HM NC3120 (ANSI Standard: DNMG 441) is a heavy-duty 55° diamond turning insert engineered for versatile finishing and semi-finishing of Steel (P). Featuring an increased thickness of 6.35mm, the DNMG1506 series offers exceptional mechanical strength and vibration dampening compared to standard 4.76mm inserts. The NC3120 universal grade provides the perfect equilibrium between wear resistance and impact toughness, making it reliable for both continuous cuts and light interruptions.
Maximum Stability for Mixed Jobs: The extra thickness of the DNMG 441 body allows it to act as a heat sink, preventing edge deformation during long finishing passes. NC3120 ensures the edge stays sharp even when the steel material quality varies.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG150604-HM |
| ANSI Code | DNMG 441 |
| Grade | NC3120 (Universal CVD for Steel) |
| Thickness | 6.35 mm (Industrial Grade Stability) |
Core Performance Benefits:
- Enhanced Rigidity: The 6.35mm thick substrate significantly reduces the risk of insert breakage under high cutting forces or vibration.
- Universal Grade Technology: NC3120 is optimized for a wide range of steel types, reducing the need to swap inserts for different alloy compositions.
- HM Precision Chipbreaker: Excellent for finishing operations, providing tight chip control at shallow depths to ensure superior surface finishes.
- CVD Multi-Layer Coating: Offers excellent protection against heat and abrasive wear, extending tool life in medium-speed applications.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (S45C / 1045) | 160 - 300 m/min | 0.08 - 0.22 mm/rev | 0.2 - 2.0 mm |
| Alloy Steel (4140 / 4340) | 140 - 240 m/min | 0.05 - 0.18 mm/rev | 0.2 - 1.5 mm |
| Steel with Light Interruptions | 120 - 200 m/min | 0.10 - 0.25 mm/rev | 0.5 - 2.5 mm |
Compatible Tool Holders:
Must be used with holders designed for 1506 (6.35mm thick) pockets:
- External Turning: DDJNR/L 2525M15 / 3232P15
- Internal Heavy Boring: S32T-DDUNR15 / S40U-DDUNR15 / S50V-DDUNR15
Thickness Intelligence: DNMG 1506 vs. 1504
Why the 150604 is a professional favorite for large parts:
Built for Industrial Stability. The 6.35mm thickness provides more "meat" to absorb cutting heat. It's much harder to break than the standard 4.76mm version, making it safer for valuable large workpieces.
The General Standard. Great for smaller machines and lighter cuts. More common, but lacks the extreme thermal protection of the 1506 series.
Machinist's Pro Tip: If you are finishing a long shaft and experience size deviations due to tool heat, switching from 1504 to this 1506 series will provide more consistent dimensions.
Packaging: 10 pieces per box.