KORLOY MGMN400-02-R NC3020 Indexable Grooving & Parting Inserts | PVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN400-02-R NC3020 0.157 inch Metric Grooving Tooling
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KORLOY MGMN400-02-R NC3020 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance PVD Coated Double-Ended Carbide Inserts with 0.2mm Corner Radius for CNC Lathe Steel & Alloy Grooving
1. Product Overview: Which insert is best for precise radius grooving and parting in alloy and carbon steels?
Which indexable double-ended grooving insert featuring a tight 0.2mm corner radius offers exceptional fracture toughness, smooth chip flow, and precise edge definition when executing 4.0mm wide grooving, fine profiling, or parting-off on CNC turning centers machining alloy steels, carbon steels, and stainless steels? Backed by industrial metalworking standards and empirical tooling data, the KORLOY MGMN400-02-R NC3020 (equivalent metric 4.0mm width with 0.2mm corner radius / imperial 0.157 inch width) is engineered specifically for demanding turning tasks requiring superior resistance to thermal shock and built-up edge. It incorporates the advanced NC3020 grade—a specialized PVD multi-layer coated carbide substrate optimized for toughness and stable performance during continuous to interrupted cutting operations. Combined with its specialized geometry, it ensures clean corner transitions and reliable chip evacuation.
2. Product Core Advantages (Key Features)
- NC3020 Advanced PVD Grade: Features a high-toughness carbide substrate combined with a smooth PVD coating designed for excellent fracture resistance, reduced friction, and superior performance in steel and alloy machining.
- 0.2mm Corner Radius (-R) Profile: Engineered with a tight corner radius that delivers precise corner definition during profile finishing while balancing edge durability against chipping.
- 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) | 0.2 mm | 0.0079 inch |
| Recommended Feed (f) - Grooving | 0.04 - 0.14 mm/rev | 0.0016 - 0.0055 in/rev |
| Recommended Feed (f) - Parting | 0.03 - 0.09 mm/rev | 0.0012 - 0.0035 in/rev |
| Cutting Speed (Vc) - Alloy & Carbon Steels | 100 - 220 m/min | 328 - 722 SFM |
Model Nomenclature Breakdown: MGMN400-02-R NC3020
Double-ended grooving
4.0mm cutting width
0.2mm corner radius
PVD 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-reliability CNC turning operations involving external grooving, precision radius profile finishing, bar stock cutoff, and facing across alloy steels, carbon steels, and heat-resistant alloys.
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, Swiss-type automatic lathes, and production turning systems.
- Coolant Systems: Fully compatible with high-pressure and flood coolant configurations to enhance chip control during deep grooving passes.
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) | Alloy Steel, Carbon Steel (42CrMo, 20CrMnTi) | Exceptional toughness and thermal shock resistance for general to interrupted steel turning. | Sandvik GC1125 / Kennametal KC5010 |
| M Group (Stainless Steel) | Austenitic Stainless Steel (304, 316) | Smooth PVD coating resists built-up edge and chemical wear during stainless grooving. | Seco CP200 / Iscar IC908 |
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 NC3020 PVD grade for alloy and stainless steel grooving?
A: The specialized PVD coating provides superior toughness, lower friction, and resistance to thermal shock, making it ideal for stable or interrupted steel and stainless steel turning operations.
Q: What is the advantage of the 0.2mm corner radius (-02-R) design?
A: The 0.2mm corner radius provides sharper profile transitions and precise corner definition while maintaining sufficient cutting edge strength.
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
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.