KORLOY MGMN800-M NC3020 Indexable Grooving & Parting Inserts | MGMN Series CVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN800-M NC3020 0.315 inch Metric Grooving Tooling
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KORLOY MGMN800-M NC3020 Indexable Grooving & Parting Inserts (10pcs/box)
High-Durability CVD Coated Double-Ended Carbide Inserts Featuring M-Type Chipbreaker for CNC Lathe Heavy Steel Grooving & Parting
1. Product Overview: Which insert is best for high-efficiency heavy steel grooving and wide parting-off applications?
Which indexable double-ended grooving insert ensures exceptional wear resistance, thermal shock stability, and reliable chip control when executing heavy parting-off or 8.0mm wide grooving on CNC turning centers working with structural and alloy steels? Verified by industrial metalworking standards and machine tooling databases, the KORLOY MGMN800-M NC3020 (equivalent metric 8.0mm / imperial 0.315" width) is engineered specifically for medium-to-heavy grooving and parting tasks that require superior flank wear resistance, dual-edge cost-efficiency, and smooth chip evacuation. It features the advanced NC3020 grade—a specialized CVD multi-layer coated carbide substrate optimized for high resistance to crater wear and thermal deformation under continuous high-speed steel turning conditions. Combined with its precision M-type chipbreaker geometry (-M), it effectively controls medium-to-heavy chip formation and reduces cutting forces during high-feed radial feeds.
2. Product Core Advantages (Key Features)
- NC3020 Advanced CVD Grade: Features a high-strength carbide substrate with a robust CVD multi-layer coating designed to withstand high temperatures and resist flank wear during continuous steel turning.
- M-Type Chipbreaker Geometry (-M): Designed with a specialized medium-duty groove form that promotes stable chip curling and breaking across broad feed rates during heavy grooving.
- Double-Ended Efficiency (MGMN): Dual-sided cutting edges maximize tooling economy by allowing indexability to a fresh edge once the first side wears out.
- Rigid Central Clamping Interface: Provides high clamping stability and precise seating to eliminate micro-vibrations and chatter during wide 8.0mm parting and grooving 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 ($W$) | 8.0 mm | 0.315 inch (~5/16") |
| Chipbreaker Style | -M (Medium Machining) | -M (Medium Machining) |
| Recommended Feed ($f$) - Grooving | 0.08 - 0.20 mm/rev | 0.0031 - 0.0079 in/rev |
| Recommended Feed ($f$) - Parting | 0.06 - 0.14 mm/rev | 0.0024 - 0.0055 in/rev |
| Cutting Speed ($Vc$) - Steel / Carbon Steel | 140 - 280 m/min | 460 - 920 SFM |
Model Nomenclature Breakdown: MGMN800-M NC3020
Double-ended grooving
8.0mm cutting width
Medium chipbreaker
CVD Coated Grade
Looking for precision external grooving toolholders or modular blocks designed for secure MGMN 800 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blocks4. Product Application Scenarios
Optimized for heavy-duty CNC lathe operations involving wide external OD grooving, face grooving, large diameter bar stock parting-off, and high-efficiency turning across carbon steels, alloy steels, and structural steel components.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits heavy-duty MGMN-compatible external grooving tool blocks and modular blades matching 8.0mm pocket widths.
- Machine Platforms: Designed for high-rigidity CNC turning centers, heavy automatic lathes, and high-volume production cells.
- Coolant Systems: Fully compatible with high-volume flood coolant configurations to manage thermal loads across wide 8.0mm cutting faces.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade NC3020 performs across different ISO material classifications ensures maximum machining efficiency.
| ISO Material Group | Workpiece Description | KORLOY NC3020 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Carbon Steel, Alloy Steel (4340, 1045, C45E) | High wear-resistant CVD grade engineered for stable continuous steel turning, delivering long tool life under high cutting speeds. | Sandvik GC4325 / Kennametal KC9215 |
| K Group (Cast Iron) | Gray Cast Iron, Nodular Cast Iron (GG25, GGG40) | Provides good thermal stability and abrasive wear resistance during moderate cast iron grooving operations. | Iscar IC907 / Walter WK10 |
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: What specific machining operations is the -M chipbreaker designed for?
A: The -M chipbreaker is optimized for medium-to-heavy machining applications, providing robust chip breaking performance and edge strength across standard to high feed rates in steels.
Q: How can I prevent chatter during wide 8.0mm parting-off passes?
A: Ensure minimal tool overhang, utilize a rigid tool block blade structure, and reduce the feed rate by 35% when the insert approaches the center axis of the stock.
Q: How many inserts come in a standard box?
A: Each factory package 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.