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
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.