Korloy MGMN200-G NC3120 2mm Double-Ended Universal Steel Grooving Insert (10pcs)
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The Original Korloy MGMN200-G NC3120 is a premium 2.0mm Double-Ended Grooving Insert designed for Versatility and Stable Tool Life. As part of Korloy's multi-purpose lineup, the NC3120 grade is engineered to bridge the gap between high-speed wear resistance and impact toughness. This makes it the ideal "all-rounder" for 2mm grooving and parting-off operations in Carbon Steel, Alloy Steel, and Mild Steel. Featuring the robust -G (General) chipbreaker, it provides exceptional chip control across a wide range of cutting depths and feed rates.
The Job Shop Hero: NC3120 is the most forgiving CVD grade for steel. It resists built-up edge (BUE) at lower speeds while maintaining hardness at higher temperatures, making it perfect for CNC operators who need a single tool to handle various steel components.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN200-G |
| Insert Width (w) | 2.0 mm |
| Grade | NC3120 (Universal CVD for Steel) |
| Chipbreaker | -G (Reinforced General Geometry) |
Core Performance Benefits:
- Optimized Kerf Width: The 2mm width provides a stable cut while maximizing material savings during parting-off operations.
- Broad Application Range: Excellent performance from low to medium-high speeds, reducing the need for multiple insert grades in the workshop.
- Enhanced Edge Sharpness: The NC3120 coating process ensures a clean edge that reduces cutting forces and prevents work-hardening.
- Double-Ended Value: Two usable cutting edges per insert effectively halve your tooling costs.
Recommended Cutting Parameters:
| Material | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Low Carbon Steel | 130 - 220 m/min | 0.05 - 0.15 mm/rev |
| Alloy Steel | 100 - 180 m/min | 0.05 - 0.12 mm/rev |
| Pre-hardened Steel | 80 - 150 m/min | 0.04 - 0.10 mm/rev |
Compatible Tool Holders:
Fits all standard 2.0mm MGEHR/L and MGIVR tool bars:
- External Holders: MGEHR 1212-2 / 1616-2 / 2020-2 / 2525-2
Steel Grade Pro-Tip: NC3120 vs. NC3020
Selecting the right CVD grade for 2mm grooving depends on your production volume and machine speed:
The Generalist. Use this for small to medium batches where you need one insert to work on various types of steel. It is more versatile and shock-resistant.
The Specialist. Best for high-speed mass production. It offers superior wear resistance in continuous cutting but is more sensitive to speed changes.
Machinist's Pro Tip: For the MGMN200-G, chip evacuation is key. If you find chips are bird-nesting in deep grooves, increase your feed rate (f) slightly to force the -G chipbreaker to snap the chip shorter.
Packaging: 10 pieces per box.
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