Korloy MRMN200-M NC3030 2mm Full Radius R1.0 Steel Profiling Insert (10pcs)
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The Original Korloy MRMN200-M NC3030 is a high-toughness 2.0mm Full Radius (R1.0) Profiling Insert, precision-engineered for Steel (P) applications where stability is a challenge. Featuring the advanced NC3030 CVD coating, this insert is the go-to solution for interrupted cuts and machining with long overhangs. The Full Radius (Round Nose) geometry, combined with the -M (Medium) chipbreaker, ensures smooth chip management and superior edge security on carbon and alloy steels.
Superior Edge Security: NC3030 is designed to be more "forgiving" than NC3020. Its specialized CVD layer and tough substrate provide excellent resistance to chipping and thermal shock, making it ideal for older machines or workpieces with surface interruptions (like holes or keyways).
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MRMN200-M |
| Insert Shape | Full Radius (Round Nose) |
| Width / Radius | 2.0 mm / R1.0 |
| Grade | NC3030 (High-Toughness Steel CVD) |
Core Performance Benefits:
- Interrupted Cut Specialist: The tough substrate allows for stable machining even through holes, keyways, or scaly surfaces.
- Full Radius (R1.0) Contouring: Delivers seamless 3D profiles and smooth fillets on small-to-medium diameter steel shafts.
- Advanced CVD Layer: Protects the cutting edge from high-temperature deformation while maintaining a sharp, stable profile.
- -M Chipbreaker Versatility: Optimized to break chips effectively at medium feed rates, preventing long tangles in soft steels.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Low Carbon Steel (S10C/1010) | 120 - 200 m/min | 0.05 - 0.12 mm/rev |
| Alloy Steel (4140/42CrMo) | 100 - 180 m/min | 0.04 - 0.10 mm/rev |
| Molding/Pre-hardened Steel | 80 - 150 m/min | 0.03 - 0.08 mm/rev |
Compatible Tool Holders:
Precision 2.0mm seat fit for standard holder systems:
- External Holders: MGEHR 1212-2 / 1616-2 / 2020-2
- Internal Holders: MGIVR 2016-2 / 2520-2
Machinist Tip: NC3030 vs. NC3020
Both are CVD grades for steel, but they serve different purposes:
The Tough Choice. Select this for interrupted cuts, slower speeds, or unstable setups. It prevents the sudden brittle failure that can happen with harder grades.
The High-Speed Choice. Best for continuous, clean cuts in mass production. It has higher wear resistance but is more prone to chipping under impact.
Pro Advice: For MRMN200-M NC3030, if you encounter heavy vibration, try reducing your cutting speed (Vc) slightly but keep the feed (f) consistent to allow the -M chipbreaker to function correctly.
Packaging: 10 pieces per box.