Korloy MGMN300-G NC3120 3mm 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 MGMN300-G NC3120 is a high-performance 3.0mm Double-Ended Grooving Insert engineered for Versatility and Operational Stability. As part of Korloy's multi-material lineup, the NC3120 grade is designed to perform reliably across a broad spectrum of steel types and cutting conditions. Whether you are performing standard grooving, deep parting-off, or light side turning, the MGMN300-G provides the rigid edge strength and superior chip control required for modern CNC machining.
Maximum Adaptability: The NC3120 grade is specifically formulated to resist "built-up edge" (BUE) at medium speeds while providing enough toughness to handle slight interruptions. It is the perfect choice for job shops that switch frequently between different steel workpieces.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-G |
| Insert Width (w) | 3.0 mm |
| Grade | NC3120 (Universal CVD for Steel) |
| Chipbreaker | -G (Reinforced General Geometry) |
Core Performance Benefits:
- Enhanced Edge Stability: The -G geometry combined with NC3120 coating provides a robust edge that resists chipping in diverse machining environments.
- Universal Compatibility: Performs exceptionally well on Carbon Steel (P), Alloy Steel (M), and even Ductile Iron (K).
- Double-Ended Value: Two usable cutting edges allow for high-speed production with significant cost savings per part.
- Rigid 3mm Body: The 3.0mm width offers the ideal balance of material savings and tool rigidity for medium-to-large diameter parting tasks.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Mild/Low Carbon Steel | 120 - 200 m/min | 0.08 - 0.22 mm/rev |
| Medium Carbon Steel (1045) | 110 - 180 m/min | 0.08 - 0.20 mm/rev |
| Alloy Steel (4140) | 90 - 160 m/min | 0.06 - 0.18 mm/rev |
Compatible Tool Holders:
Fits all standard 3.0mm MGEHR/L or internal MGIVR holders:
- External Holders: MGEHR 1616-3 / 2020-3 / 2525-3
- Internal Holders: MGIVR 2016-3 / 2520-3
The 3.0mm Strategy: NC3120 vs. NC3020
At the 3mm width, your grade choice determines your process flexibility:
The Generalist. Use this if you machine different steel grades daily. It handles speed fluctuations better and is more resistant to built-up edge.
The Speed Specialist. Best for high-volume, high-speed continuous runs on stable machines. Offers higher wear resistance but less flexibility.
Machinist's Pro Tip: For the MGMN300-G NC3120, ensure your coolant is pointed directly at the cutting point. Because NC3120 is highly versatile, maintaining consistent temperature will significantly extend its tool life across different materials.
Packaging: 10 pieces per box.
Korloy MGMN300-G NC3120 price, 3mm universal grooving insert for steel, MGMN300-G cutting speed and feed, versatile parting insert for alloy steel, CVD coated 3.0mm lathe grooving tip
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.