Korloy MGMN300-G NC3120 3mm Double-Ended Universal Steel Grooving Insert (10pcs)
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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