Korloy MGMN300-04-L PC5300 3mm R0.4 Precision Profiling Grooving Insert (10pcs)
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The Original Korloy MGMN300-04-L PC5300 is an elite 3.0mm Double-Ended Profiling Insert specifically designed for high-precision contouring and finishing. Featuring a robust 0.4mm corner radius (R0.4) and the -L optimized lead geometry, this insert excels where standard grooving tools fail—maintaining stability during lateral movements and complex curvature paths. Powered by the PC5300 PVD grade, it is a universal powerhouse for machining stainless steel, carbon steel, and high-temp alloys.
Why R0.4 Radius? The larger 0.4mm corner radius provides a significantly stronger cutting edge compared to R0.2. This allows for higher feed rates and improved heat dissipation during profiling passes, ensuring your 3.0mm grooves meet strict surface finish requirements even in tough materials.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-04-L |
| Insert Width / Radius | 3.0 mm / R0.4 |
| Grade | PC5300 (Universal High-Toughness PVD) |
| Operation | Heavy Profiling, Side-Turning, Radius Grooving |
Core Performance Benefits:
- Reinforced Edge Strength: The R0.4 radius minimizes edge chipping during high-pressure profiling cycles.
- Lateral Machining Excellence: Optimized -L geometry allows for smooth "side-turning" with minimal tool deflection.
- Universal Versatility: PC5300 grade delivers elite performance across P (Steel), M (Stainless), and K (Cast Iron).
- Exceptional Heat Resistance: Advanced PVD coating technology enables stable cutting even at elevated surface speeds.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon/Alloy Steel | 110 - 190 m/min | 0.08 - 0.18 mm/rev |
| Stainless Steel (300 Series) | 80 - 140 m/min | 0.06 - 0.14 mm/rev |
| Tool Steel / Hardened Steel | 50 - 90 m/min | 0.05 - 0.12 mm/rev |
Compatible Tool Holders:
Precision fit for standard 3.0mm seat MGEHR/L and MGIVR/L systems:
- External Holders: MGEHR 2020-3 / 2525-3
- Internal Holders: MGIVR 2520-3 / 3125-3
Profiling Selection: R0.4 vs. R0.2
In 3.0mm profiling, choosing the correct radius is essential for tool life and part geometry:
The Rugged Finisher. Offers higher edge strength. Ideal for larger parts, heavier feeds, and materials that tend to cause notch wear on sharper radii.
The Delicate Detailer. Best for very small corner radii requirements and ultra-low cutting forces in thin-walled components.
Machinist's Pro Tip: For MGMN300-04-L PC5300, the R0.4 radius allows you to use the tool for light "side-turning" (longitudinal turning) after cutting the groove. This reduces tool changes and optimizes your cycle time for complex shafts.
Packaging: 10 pieces per box.
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