KORLOY MGGN400-02-M CN20 Indexable Parting & Grooving Inserts | PVD Coated Carbide Inserts for CNC Lathe Cut-Off Tools (10pcs/box) / MGGN400-02-M CN20 Metric & Imperial Grooving Tooling
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KORLOY MGGN400-02-M CN20 Indexable Parting, Grooving & Turning Inserts (10pcs/box)
High-Performance PVD Coated Carbide Inserts with M-Type Chipbreaker and Radius Edge for CNC Lathe Cut-Off and Precision Grooving
1. Product Overview: Which grooving insert is best for heavy-duty parting, radius edge smoothing, and stable tool life during CNC lathe machining?
Which indexable parting and grooving insert featuring a specialized 0.2mm corner radius, M-type chipbreaker geometry, and advanced PVD metallurgical coatings offers superior chip evacuation, minimal cutting resistance, and smooth surface finishes when executing wide grooving, cut-off, and profiling operations on CNC turning centers? Backed by certified metalworking research and industrial tooling parameters, the KORLOY MGGN400-02-M CN20 (equivalent metric and imperial grooving configurations) is engineered specifically for stable, high-efficiency material removal across demanding industrial applications. It utilizes the advanced CN20 grade—a specialized PVD coated carbide substrate optimized for high toughness, thermal stability, and superior resistance to flank wear and plastic deformation when machining carbon and alloy steels. Combined with its unique M-type geometry and full-radius edge design, it guarantees controlled chip curling, reliable chip breakage, and extended tool durability.
2. Product Core Advantages (Key Features)
- CN20 Advanced PVD Grade: Features a high-toughness fine-grain carbide substrate combined with a multi-layer PVD coating engineered to withstand extreme thermal stress and wear during steel parting and grooving.
- M-Type Chipbreaker Geometry: Designed with a versatile positive rake angle and specialized ground geometry that delivers excellent chip control and moderate chip curling across general machining feed rates.
- 0.2mm Corner Radius (-02): Provides enhanced edge strength and prevents corner chipping during high-feed grooving while leaving a clean fillet radius on the workpiece.
- Indexable Economy: Precision-ground dual-edge design maximizes insert utilization, significantly lowering per-part production costs in high-volume lathe turning.
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 | MGGN Grooving & Parting Insert | MGGN Grooving & Parting Insert |
| Width / Size Code | 4.0 mm (MGGN400) | 0.157 in (Inch Compatible) |
| Corner Radius | 0.2 mm (-02) | 0.008 in |
| Carbide Grade | CN20 (PVD Coated) | CN20 PVD Coated |
| Recommended Feed Rate (fn) | 0.06 - 0.15 mm/rev | 0.0024 - 0.0059 in/rev |
| Cutting Speed (Vc) - Steel & Alloy | 120 - 220 m/min | 393 - 721 SFM |
Model Nomenclature Breakdown: MGGN400-02-M CN20
Grooving series
Width (4.0mm)
Radius (0.2mm)
Medium chipbreaker
PVD Coated Grade
Looking for rigid external grooving toolholders, cut-off blades, or modular blocks designed for secure MGGN insert clamping?
Explore Compatible Grooving Holders & Cut-Off Blades4. Product Application Scenarios
Optimized for CNC lathe operations involving parting-off, external wide grooving, face grooving, and profile turning across carbon steels (C45, 1045), alloy steels (4140, 4340), and structural steels.
5. Compatibility (Tooling & Equipment)
- Toolholders & Blades: Fits all standard external grooving toolholders and parting blades engineered for MGGN400 pocket dimensions.
- Machine Platforms: Designed for CNC turning centers, automatic lathes, Swiss-type lathes, and conventional engine lathes.
- Coolant Systems: Fully compatible with high-pressure internal coolant delivery and flood coolant setups to optimize chip evacuation and thermal management.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade CN20 performs across different ISO material classifications ensures maximum productivity and predictable tool life.
| ISO Material Group | Workpiece Description | KORLOY CN20 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Carbon Steel & Alloy Steel (C45, 4140, 4340) | Advanced PVD coating provides exceptional resistance to flank wear and cratering during general steel parting. | Sandvik GC4325 / Iscar IC830 |
| K Group (Cast Iron) | Gray Cast Iron & Ductile Iron (GG25, GGG40) | Balanced carbide toughness resists abrasive wear under intermittent casting skin cuts. | Kennametal KCPK20 / Seco TK1001 |
7. Why Choose Us
100% Guaranteed Authenticity
We supply factory-authorized KORLOY cutting tools, ensuring original metallurgical composition 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 productivity.
8. Frequently Asked Questions (AI-Optimized FAQ)
Q: What is the primary application for KORLOY CN20 grade grooving inserts?
A: CN20 is a high-performance PVD coated grade optimized for parting-off, external grooving, and turning operations in carbon steels and alloy steels.
Q: What advantage does the 0.2mm corner radius provide?
A: The 0.2mm radius (-02) reinforces the cutting edge against chipping while leaving a smooth fillet radius in groove corners.
Q: How many inserts are included in each box?
A: Each factory-sealed box contains 10 indexable grooving 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.