Korloy MGMN200-M NC3120 2mm Double-Ended Universal Steel Grooving Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMN200-M NC3120 is a high-performance 2.0mm Double-Ended Grooving Insert engineered for Versatile Steel Machining. Featuring the NC3120 CVD grade, this insert is designed to be the "all-rounder" for your CNC lathe. It bridge the gap between high-speed wear resistance and impact toughness, making it equally effective for continuous parting-off and light interrupted grooving in carbon and alloy steels.
The Versatile Specialist: NC3120 is one of Korloy's most popular grades for steel. It offers a more stable tool life than NC3020 in varying conditions, effectively handling the heat of high-speed cuts while resisting the edge chipping often seen in thinner 2mm inserts.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN200-M |
| Insert Width (w) | 2.0 mm (+/- 0.02) |
| Grade | NC3120 (Universal Steel Grade - CVD) |
| Chipbreaker | -M (Standard Medium Feed Control) |
Core Performance Benefits:
- Optimized Balance: Excellent resistance to both thermal cracking and mechanical chipping.
- Thick CVD Coating: Provides a superior surface finish and prevents built-up edge (BUE) even at higher cutting temperatures.
- Precision Parting: The 2.0mm width minimizes material waste while maintaining enough rigidity for stable cuts.
- Double-Ended ROI: Two precision-ground cutting edges per insert ensure maximum economy for your workshop.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Low Carbon Steel (1018/1020) | 120 - 220 m/min | 0.05 - 0.15 mm/rev |
| Alloy Steel (4140/4340) | 100 - 180 m/min | 0.04 - 0.12 mm/rev |
| Tool Steel / Mold Steel | 80 - 150 m/min | 0.05 - 0.10 mm/rev |
Compatible Tool Holders:
Recommended for use with standard 2.0mm MGEHR/L or MGIVR holders:
- External Holders: MGEHR 1010-2 / 1212-2 / 1616-2 / 2020-2
- Internal Holders: MGIVR 2016-2 / 2520-2
Grade Choice: NC3120 vs. NC3030
Choosing the right "Steel Grade" for your 2.0mm insert is key to cost-efficiency:
The Generalist. Use for 80% of steel applications. High wear resistance with enough toughness for light interruptions. Best for CNC production.
The Shock Absorber. Choose this if your 2.0mm cuts are failing due to heavy interruptions, vibrating workpieces, or manual lathe operation.
Machinist's Pro Tip: If you are experiencing "coning" or the cut isn't straight with the MGMN200-M NC3120, ensure your tool is set exactly at center height. In 2mm parting, being even 0.1mm above center can cause excessive rubbing and heat.
Packaging: 10 pieces per box.
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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.