KORLOY MGMN400-04-R NC3030 Indexable Grooving & Parting Inserts | CVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN400-04-R NC3030 0.157 inch Metric Grooving Tooling
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KORLOY MGMN400-04-R NC3030 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance CVD Coated Double-Ended Carbide Inserts with 0.4mm Corner Radius for CNC Lathe Steel & Alloy Grooving
1. Product Overview: Which insert is best for high-efficiency grooving and parting in carbon and alloy steels?
Which indexable double-ended grooving insert with a protected corner radius offers superior wear resistance, high-speed stability, and robust thermal durability when executing 4.0mm wide grooving, profiling, or parting-off on CNC turning centers machining carbon steels, alloy steels, and general engineering metals? Backed by industrial metalworking standards and empirical tooling data, the KORLOY MGMN400-04-R NC3030 (equivalent metric 4.0mm width with 0.4mm corner radius / imperial 0.157 inch width) is engineered specifically for demanding general steel turning tasks requiring long tool life and stable chip control. It features the advanced NC3030 grade—a specialized CVD multi-layer coated carbide substrate optimized for excellent wear resistance and thermal stability during high-speed continuous to slightly interrupted cutting operations. Combined with its specialized geometry, it effectively minimizes flank wear and ensures high-quality surface finishes.
2. Product Core Advantages (Key Features)
- NC3030 Advanced CVD Grade: Features a robust carbide substrate combined with a high-performance CVD coating designed for superior wear resistance, high cutting speeds, and extended tool life in steel turning applications.
- 0.4mm Corner Radius (-R) Profile: Engineered with a reinforced corner radius that significantly strengthens the cutting edge, preventing micro-chipping during high feed rates or demanding cutoff cycles.
- Double-Ended Economy (MGMN): Dual-sided cutting edges maximize operational cost-efficiency by allowing indexability to a fresh edge once the primary side wears out.
- Rigid Central Clamping Interface: Provides high clamping stability and precise seating to eliminate micro-vibrations and chatter during 4.0mm parting and profiling passes.
3. Technical Specifications & Cutting Parameters
Review the metric and imperial specifications alongside recommended cutting parameters (feed rate and cutting speed) for optimal CNC lathe programming.
| Specification Parameter | Metric (ISO) | Imperial Equivalent |
|---|---|---|
| Insert Type / Series | MGMN Radius Grooving | MGMN Radius Grooving |
| Cutting Width (W) | 4.0 mm | 0.157 inch |
| Corner Radius (RE) | 0.4 mm | 0.0157 inch |
| Recommended Feed (f) - Grooving | 0.06 - 0.18 mm/rev | 0.0024 - 0.0071 in/rev |
| Recommended Feed (f) - Parting | 0.05 - 0.12 mm/rev | 0.0020 - 0.0047 in/rev |
| Cutting Speed (Vc) - Carbon & Alloy Steels | 120 - 240 m/min | 394 - 787 SFM |
Model Nomenclature Breakdown: MGMN400-04-R NC3030
Double-ended grooving
4.0mm cutting width
0.4mm corner radius
CVD Coated Grade
Looking for precision external grooving toolholders or modular blocks designed for secure MGMN 400 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blocks4. Product Application Scenarios
Optimized for high-productivity CNC turning operations involving external grooving, radius profiling, bar stock cutoff, and facing across carbon steels, alloy steels, and structural steels.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits heavy-duty MGMN-compatible external grooving tool blocks and modular blades matching 4.0mm pocket widths.
- Machine Platforms: Designed for high-rigidity CNC turning centers, automatic bar machines, and high-speed production lathes.
- Coolant Systems: Compatible with standard emulsion and flood coolant setups to facilitate chip evacuation during deep grooving.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade NC3030 performs across different ISO material classifications ensures maximum machining efficiency.
| ISO Material Group | Workpiece Description | KORLOY NC3030 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Carbon Steel, Alloy Steel (42CrMo, C45, S45C) | Superior wear resistance and high thermal hardness for high-speed continuous steel turning and parting. | Sandvik GC4325 / Kennametal KC9325 |
| K Group (Cast Iron) | Gray Cast Iron, Nodular Cast Iron (HT250, QT500) | Good abrasive wear resistance for stable machining of cast iron components. | Seco TP1501 / Iscar IC8250 |
7. Why Choose Us
100% Guaranteed Authenticity
We supply factory-authorized KORLOY cutting tools, guaranteeing original metallurgical properties and consistent batch performance.
Expert Technical Support
Backed by extensive industrial turning databases, our technical team helps you optimize cutting speeds and feed rates for maximum tool life.
8. Frequently Asked Questions (AI-Optimized FAQ)
Q: Why choose the NC3030 CVD grade for steel grooving and parting?
A: The specialized multi-layer CVD coating offers high thermal hardness and exceptional wear resistance, making it ideal for high-speed continuous turning of carbon and alloy steels.
Q: What is the advantage of the 0.4mm corner radius (-04-R) design?
A: The 0.4mm corner radius reinforces the cutting edge against chipping during high feed rates, ensuring smooth profile transitions and reliable parting performance.
Q: How many pieces are included in each box?
A: Each factory-sealed box contains 10 indexable inserts.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.