Korloy MRMN600-M NC3020 6mm Full Radius R3.0 Heavy Duty Steel Profiling Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MRMN600-M NC3020 is a high-capacity 6.0mm Full Radius (R3.0) Profiling Insert, engineered specifically for heavy-duty Steel (P) machining. Featuring the industry-standard NC3020 CVD coating, this insert is built to dominate high-speed production lines where heat resistance and tool longevity are critical. The massive 6mm wide Full Radius (Round Nose) geometry, paired with the -M (Medium) chipbreaker, allows for aggressive material removal and exceptional stability when machining large profiles on carbon and alloy steels.
Heavy-Duty Productivity: The NC3020 grade is optimized for high-speed continuous cutting. Its thick, smooth CVD layer acts as a powerful thermal shield, allowing you to maintain high cutting speeds on large-diameter workpieces while significantly extending tool life compared to standard PVD grades.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MRMN600-M |
| Insert Shape | Full Radius (Round Nose) |
| Width / Radius | 6.0 mm / R3.0 |
| Grade | NC3020 (Premium Steel CVD) |
Core Performance Benefits:
- Maximum Metal Removal Rate (MRR): The 6.0mm width allows for deeper and wider cuts, drastically reducing cycle times on large components.
- CVD Thermal Barrier: Superior resistance to heat buildup, making it ideal for dry cutting or high-speed machining of hardened steels.
- Stabilized -M Chipbreaker: Designed to break chips effectively at higher feed rates, preventing dangerous "bird-nesting" on large CNC lathes.
- Precision R3.0 Geometry: Delivers flawless transitions for large rounded grooves and heavy-duty 3D contouring.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Medium Carbon Steel (S45C) | 120 - 220 m/min | 0.12 - 0.35 mm/rev |
| Alloy Steel (42CrMo/SCM440) | 100 - 180 m/min | 0.10 - 0.28 mm/rev |
| Cast Steel / Heavy Castings | 90 - 160 m/min | 0.15 - 0.40 mm/rev |
Compatible Tool Holders:
Precision 6.0mm seat for heavy-duty holder systems:
- External Holders: MGEHR 2525-6 / 3232-6 / 4040-6
- Internal Holders: MGIVR 4032-6 / 5040-6
Machinist Tip: Why MRMN600-M NC3020 for Large Shafts?
When machining 6.0mm wide grooves, stability and heat management are your biggest challenges:
The High-Efficiency Choice. At 6mm wide, the contact area is huge. NC3020’s CVD coating handles the massive friction heat much better than PVD, allowing you to run faster without burning the edge.
The Heavy Interruption Choice. If your 6mm groove is on a part with hex sections or holes, switch to PC5300 for its superior impact resistance.
Pro Advice: For MRMN600-M NC3020, the tool pressure is significant. Always use the largest possible shank size (e.g., 3232 or 4040) to prevent vibration marks and ensure the full R3.0 radius remains concentric.
Packaging: 10 pieces per box.
Korloy MRMN600-M price, 6mm round nose insert for steel, heavy duty R3.0 profiling insert, NC3020 CVD insert for large diameter shafts, MRMN600-M cutting parameters
Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.