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
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.