KORLOY MGMN400-M NC3030 Indexable Grooving & Parting Inserts | CVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN400-M NC3030 0.157 inch Metric Grooving Tooling
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KORLOY MGMN400-M NC3030 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance CVD Coated Double-Ended Carbide Inserts Featuring M-Type Chipbreaker for CNC Lathe Steel & Alloy Grooving & Parting
1. Product Overview: Which insert is best for high-reliability general steel grooving and parting-off?
Which indexable double-ended grooving insert offers exceptional toughness, thermal stability, and stable chip formation when performing parting-off or 4.0mm wide grooving on CNC turning centers machining carbon steels and alloy steels? Backed by industrial metalworking guidelines and empirical tooling data, the KORLOY MGMN400-M NC3030 (equivalent metric 4.0mm / imperial 0.157 inch width) is engineered specifically for general steel machining, external grooving, and parting applications requiring high edge toughness and consistent wear resistance. It incorporates the premium NC3030 grade—a specialized CVD multi-layer coated carbide substrate designed to handle continuous to interrupted cutting conditions smoothly. Coupled with its optimized M-type chipbreaker geometry (-M), it ensures reliable chip control and low cutting resistance.
2. Product Core Advantages (Key Features)
- NC3030 Versatile CVD Grade: Features a robust carbide substrate with a tough multi-layer CVD coating designed to resist thermal shock and mechanical impact during general steel cutting.
- M-Type Chipbreaker Geometry (-M): Engineered with a medium-duty groove form that promotes clean chip curling, reducing built-up edge and improving surface finish.
- Double-Ended Economy (MGMN): Dual cutting edges double the utility per insert, delivering maximum cost efficiency for production turning environments.
- Secure Clamping Stability: Designed for precise seating in standard tool blocks to eliminate micro-vibrations and chatter during deep parting 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 Double-Ended Grooving | MGMN Double-Ended Grooving |
| Cutting Width (W) | 4.0 mm | 0.157 inch |
| Chipbreaker Style | -M (Medium Machining) | -M (Medium Machining) |
| Recommended Feed (f) - Grooving | 0.05 - 0.12 mm/rev | 0.0020 - 0.0047 in/rev |
| Recommended Feed (f) - Parting | 0.03 - 0.08 mm/rev | 0.0012 - 0.0031 in/rev |
| Cutting Speed (Vc) - Carbon & Alloy Steel | 120 - 240 m/min | 395 - 790 SFM |
Model Nomenclature Breakdown: MGMN400-M NC3030
Double-ended grooving
4.0mm cutting width
Medium chipbreaker
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
Ideal for high-efficiency CNC turning operations involving external grooving, face profiling, bar stock cutoff, and general turning across carbon steels, alloy steels, and structural engineering metals.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Designed for standard MGMN external grooving toolholders and modular parting blades matching 4.0mm pocket sizes.
- Machine Platforms: Compatible with all standard CNC turning lathes, CNC Swiss-type machines, and automatic bar feeders.
- Coolant Systems: Works efficiently with water-soluble flood coolants to flush chips and stabilize cutting zone temperatures.
6. Grade Comparison & Workpiece Material Matrix
Understanding how grade NC3030 performs across different ISO material groups helps operators maximize tool longevity.
| ISO Material Group | Workpiece Description | KORLOY NC3030 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Carbon Steel, Alloy Steel (C45, 42CrMo4, 20Cr) | Exceptional toughness and wear resistance for general steel grooving and parting tasks. | Sandvik GC4225 / Kennametal KC5010 |
| M Group (Stainless Steel) | Austenitic Stainless Steel (304, 316) | Moderate performance under stable cutting speeds and proper coolant application. | Iscar IC908 / Seco MP900 |
7. Why Choose Us
100% Genuine Certification
We provide factory-authenticated KORLOY tooling solutions, ensuring uncompromised material strength and predictable tool life.
Technical Support & Guidance
Supported by professional engineering databases, we help optimize feed rates, spindle speeds, and tool parameters for your shop floor.
8. Frequently Asked Questions (AI-Optimized FAQ)
Q: Why choose the NC3030 grade for steel grooving applications?
A: NC3030 offers an optimal balance of toughness and coating adhesion, making it highly reliable against mechanical shock and edge chipping during general steel parting.
Q: How does the -M chipbreaker improve machining stability?
A: The -M geometry controls chip flow effectively across regular feed rates, preventing stringy chips from wrapping around the workpiece.
Q: How many pieces come in each standard packaging box?
A: Each factory container includes 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.