Korloy DNMG150608-HM NC3020 Heavy-Duty Steel Turning Insert, R0.8 (10pcs)
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The Original Korloy DNMG150608-HM NC3020 (ANSI Standard: DNMG 442) is a high-performance 55° diamond turning insert built for heavy-duty semi-finishing and medium turning of Steel (P). At 6.35mm thick, this insert provides unrivaled mechanical strength and heat absorption compared to the standard 1504 series. The NC3020 CVD grade features a sophisticated multi-layer coating designed to withstand extreme temperatures and resist crater wear during high-speed, continuous cutting on large diameter workpieces.
Engineered for Stability: The DNMG 442 (150608) is specifically designed for environments where standard inserts fail due to heat or vibration. Its increased mass and R0.8 radius allow for aggressive feed rates and longer cut times without losing edge integrity.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | DNMG150608-HM |
| ANSI Code | DNMG 442 |
| Grade | NC3020 (Premium CVD for Steel) |
| Thickness | 6.35 mm (Industrial Duty) |
Core Performance Benefits:
- Maximum Edge Security: The combination of a 6.35mm body and 0.8mm radius makes this insert almost impervious to thermal cracking and mechanical fracture.
- High-Speed Productivity: NC3020's Al2O3 coating allows for elevated surface speeds, significantly reducing cycle times in large-scale production.
- HM Universal Chipbreaker: Provides reliable chip breaking across a wide range of feed rates and depths of cut.
- Four Cutting Edges: Negative geometry ensures cost-efficiency by providing 4 usable edges for heavy turning.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (S45C/1045) | 200 - 350 m/min | 0.15 - 0.45 mm/rev | 1.0 - 5.0 mm |
| Alloy Steel (4140/SCM440) | 150 - 280 m/min | 0.12 - 0.38 mm/rev | 0.8 - 4.5 mm |
| Tool Steel / Die Steel | 120 - 200 m/min | 0.10 - 0.30 mm/rev | 0.5 - 3.5 mm |
Compatible Tool Holders:
Requires heavy-duty holders compatible with 1506 (6.35mm thick) pockets:
- External Turning: DDJNR/L 2525M15 / 3232P15
- Large Boring Bars: S32T-DDUNR15 / S40U-DDUNR15 / S50V-DDUNR15
Machinist's Choice: DNMG 150608 vs. 150408
Why step up to the 1506 (6.35mm) series?
Best for High-Power & Heavy Cuts. The extra thickness allows for better heat dissipation during long cycles. If you find your 1504 inserts are deforming or snapping under heavy loads, the 1506 is the solution.
The General Workshop Standard. Suitable for light-to-medium machines where cutting forces are lower. It’s more economical for daily tasks that don't push the tool to its thermal limits.
Pro Tip: When using the 150608 NC3020, use a high-pressure coolant system if available. The 0.8 radius and extra thickness are built to handle high energy, and cooling will extend your tool life by another 30%.
Packaging: 10 pieces per box.