Korloy MRMN500-M NC3030 5mm Full Radius R2.5 Heavy Steel Profiling Insert (10pcs)
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The Original Korloy MRMN500-M NC3030 is a heavy-duty 5.0mm Full Radius (R2.5) Profiling Insert specifically engineered for high-performance Steel (P) machining under high-load conditions. Featuring the specialized NC3030 CVD coating, this insert provides exceptional edge toughness and resistance to thermal shock, making it the premier choice for interrupted cuts and surfaces with heavy scale. The 5mm Full Radius (Round Nose) geometry allows for aggressive 3D contouring and deep rounded grooving on large-scale industrial components.
Built for the Tough Stuff: When machining 5.0mm wide profiles, the cutting forces are immense. NC3030's tough substrate is designed to absorb these forces and resist chipping, especially on workpieces with keyways, cross-holes, or uneven hardness.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MRMN500-M |
| Insert Shape | Full Radius (Round Nose) |
| Width / Radius | 5.0 mm / R2.5 |
| Grade | NC3030 (High-Toughness Steel CVD) |
Core Performance Benefits:
- Maximum Rigidness: The massive 5.0mm body handles extreme radial and lateral pressures during heavy-duty profiling.
- CVD Shock Resistance: NC3030 technology prevents premature edge failure during interrupted cuts on scaly forged steels.
- Precise R2.5 Geometry: Perfect for machining large circular grooves and transition fillets in heavy machinery and oil & gas parts.
- Optimized -M Chipbreaker: Effectively manages large chip volumes produced by 5mm wide cuts, ensuring operator safety and machine uptime.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (1045 / S45C) | 100 - 180 m/min | 0.12 - 0.28 mm/rev |
| Alloy Steel (4140 / 42CrMo) | 80 - 150 m/min | 0.10 - 0.22 mm/rev |
| Heavy Casting/Forged Steel | 60 - 110 m/min | 0.08 - 0.18 mm/rev |
Compatible Tool Holders:
Precision 5.0mm seat fit for heavy-duty holder systems:
- External Holders: MGEHR 2525-5 / 3232-5 / 4040-5
- Internal Holders: MGIVR 3125-5 / 4032-5
Machinist Tip: The Power of 5.0mm NC3030
At 5.0mm width, the difference between NC3020 and NC3030 is substantial for tool life:
The "Heavy Industry" Standard. Best for general steel work where the machine setup might not be perfectly rigid. Its toughness prevents chipping during the high-vibration environment of 5mm profiling.
The High-Speed Specialist. Best for continuous, clean cuts in mass production. More wear-resistant but risky if you encounter interruptions or sudden load changes.
Pro Advice: For MRMN500-M NC3030, ensuring high-pressure coolant is directed at the R2.5 tip is vital. This helps flush the large 5mm chips and prevents heat re-cutting, which is the main cause of premature wear in heavy profiling.
Packaging: 10 pieces per box.
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