Korloy MGMN300-M NC3020 3mm Double-Ended Grooving Insert for Steel Lathe (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMN300-M NC3020 is a high-efficiency 3.0mm Double-Ended Grooving Insert designed for Continuous Steel Machining and Parting-Off. Engineered with the NC3020 CVD grade, this insert features a sophisticated multi-layer coating that excels in heat dissipation and abrasive wear resistance. It is the premier choice for high-volume CNC shops processing carbon steels and alloy steels where long tool life and consistent part dimensions are the top priorities.
Efficiency & Stability: NC3020 is optimized for stable, continuous cutting conditions. It allows for higher cutting speeds (Vc) than NC3030 while maintaining the edge integrity needed for high-carbon and alloy steel applications.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-M |
| Insert Width (w) | 3.0 mm |
| Grade | NC3020 (High Wear-Resistance CVD) |
| Chipbreaker | -M (Universal Medium-Cutting) |
Core Performance Benefits:
- Enhanced Wear Resistance: The advanced CVD coating resists flank and crater wear, extending tool life during long production runs.
- Stable Edge Performance: Designed to maintain a sharp edge under heat, ensuring dimensional accuracy across hundreds of parts.
- Universal Application: Perfect for a wide range of steel grades, from soft mild steel to hardened alloy steels.
- Double-Ended Efficiency: Two usable cutting edges significantly reduce the cost-per-cut in large-scale manufacturing.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (Medium/High) | 120 - 250 m/min | 0.08 - 0.22 mm/rev |
| Alloy Steel (e.g., 4140) | 100 - 180 m/min | 0.06 - 0.18 mm/rev |
| Mild Steel (A3/1020) | 140 - 280 m/min | 0.10 - 0.25 mm/rev |
Compatible Tool Holders:
Pairs perfectly with standard 3.0mm MGEHR/L (External) and MGIVR (Internal) tool bars:
- External Holders: MGEHR 1616-3 / 2020-3 / 2525-3
- Internal Holders: MGIVR 2016-3 / 2520-3
Finding the Right Balance: NC3020 vs. NC3030
Choosing between Korloy's steel grades depends on your cutting environment:
The Productivity King. Best for stable, continuous CNC machining at higher speeds. Focuses on maximum tool life and wear resistance.
The Tough Guardian. Best for interrupted cuts, heavy vibrations, or unstable machine setups. Prioritizes anti-chipping over speed.
Machinist's Pro Tip: If your machine is stable and you're making thousands of parts, MGMN300-M NC3020 will give you more parts per edge. If you see the tool "flanking" (rubbing on the side), check your center height—NC3020 performs best when exactly at the center line!
Packaging: 10 pieces per box.
Korloy MGMN300-M NC3020 price, 3mm steel parting insert for CNC production, MGMN300-M NC3020 cutting data, NC3020 vs NC3120 grooving grade, best 3mm insert for medium carbon steel
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.