Korloy MGMN300-M NC3020 3mm Double-Ended Grooving Insert for Steel Lathe (10pcs)
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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.
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