MGMN400-04-R NC3030 (10pcs)
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The Original Korloy MGMN400-04-R NC3030 is a heavy-duty 4.0mm Right-Hand Profiling and Grooving Insert engineered for peak performance in Steel (P) mass production. Featuring a robust 0.4mm corner radius (R0.4) and advanced CVD coating technology, this insert is designed to thrive in high-speed, continuous cutting environments where heat management is critical. The NC3030 grade offers superior wear resistance and thermal stability, making it the industry standard for large-scale production of heavy shafts, flanges, and structural steel components.
Built for Heavy-Duty Productivity: The combination of a 4.0mm width and an R0.4 radius provides maximum edge security. This allows for significantly higher feed rates and more aggressive profiling depths compared to R0.2 models, especially when machining tough carbon and alloy steels at high surface speeds.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN400-04-R |
| Insert Width / Radius | 4.0 mm / R0.4 |
| Direction | Right-Hand (-R) |
| Grade | NC3030 (High-Speed Steel Optimized CVD) |
Core Performance Benefits:
- Reinforced Edge Security: The R0.4 radius minimizes stress concentration and prevents micro-chipping during high-pressure lateral profiling.
- Premium CVD Thermal Barrier: Advanced thick-layer coating allows for a 30% increase in cutting speed compared to standard PVD grades.
- Mass Production Reliability: Exceptional resistance to crater wear ensures consistent part dimensions over long production runs.
- Optimized Right-Hand Geometry: Perfect for specific tool paths, side-turning, and finishing in complex CNC shaft machining.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (S45C / 1045) | 160 - 250 m/min | 0.10 - 0.25 mm/rev |
| Alloy Steel (42CrMo / 4140) | 130 - 210 m/min | 0.08 - 0.20 mm/rev |
| Ductile Cast Iron / Steel Casting | 110 - 190 m/min | 0.12 - 0.28 mm/rev |
Compatible Tool Holders:
Precision fit for standard 4.0mm seat Right-Hand tool systems. High rigidity is recommended:
- External Holders: MGEHR 2525-4 / 3232-4 / 4040-4
- Internal Holders: MGIVR 3125-4 / 4032-4
Production Tip: Choosing the Right 4mm Radius
The choice between R0.4 and R0.2 in the NC3030 series depends on your specific machining goal:
The High-Feed Workhorse. Offers maximum edge toughness and better heat dissipation. Essential for roughing to semi-finishing in large steel parts where high production rates are required.
The Precision Finisher. Used for intricate profiles and sharp corner requirements. While precise, it cannot handle the high feed rates of the R0.4 model.
Machinist's Pro Tip: For MGMN400-04-R NC3030, always prioritize rigidity. Because this tool can handle high feeds in steel, ensure your holder is as short and stout as possible (e.g., 3232-4) to eliminate vibration and fully leverage the CVD coating's life.
Packaging: 10 pieces per box.
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