Korloy MGMN300-04-R PC5300 3mm R0.4 Right-Hand Universal Tough Profiling Insert (10pcs)
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The Original Korloy MGMN300-04-R PC5300 is a high-toughness 3.0mm Right-Hand Profiling and Grooving Insert engineered for reliable performance across a wide range of materials. Featuring a robust 0.4mm corner radius (R0.4), this insert is designed to handle more aggressive feed rates and tougher cutting conditions than standard R0.2 models. Powered by the PC5300 universal PVD grade, it excels in Stainless Steel, Carbon Steel, and Heat-Resistant Alloys, making it an essential tool for shops requiring versatility and durability.
Built for Strength: The R0.4 radius significantly strengthens the cutting edge, reducing the risk of chipping during lateral turning (profiling). This is the "Heavy Duty" version of the 3.0mm profiling series, ideal for semi-finishing where material removal rates are a priority.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-04-R |
| Insert Width / Radius | 3.0 mm / R0.4 |
| Direction | Right-Hand (-R) |
| Grade | PC5300 (Universal High-Toughness PVD) |
Core Performance Benefits:
- Reinforced Edge Security: The 0.4mm radius allows for higher lateral cutting forces and prevents premature edge failure in work-hardened materials.
- Exceptional Grade Versatility: PC5300 handles Steel, Stainless, and Cast Iron with a single insert, simplifying your inventory.
- Superior Thermal Resistance: High-Al TiAlN coating effectively manages heat, preventing thermal cracking during wet or dry cutting.
- Optimized Lead Control: The right-hand geometry ensures precise chip control and smooth surface finishes on complex profiles.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon/Alloy Steel | 100 - 180 m/min | 0.07 - 0.18 mm/rev |
| Stainless Steel (304/316) | 70 - 140 m/min | 0.05 - 0.14 mm/rev |
| Ductile Cast Iron | 90 - 160 m/min | 0.08 - 0.20 mm/rev |
Compatible Tool Holders:
Precision 3.0mm seat fit for Right-Hand holder systems:
- External Holders: MGEHR 2020-3 / 2525-3 / 3232-3
- Internal Holders: MGIVR 2520-3 / 3125-3
Machinist Tip: Why R0.4 over R0.2?
When choosing between radii for your 3.0mm PC5300 insert, consider the setup stability:
Best for Roughing. Use this when your depth of cut is larger or if you have interrupted cuts. It provides a much stronger "backbone" to the tool edge, extending life in heavy alloy steel.
Best for Detail. Use this for small fillets or when cutting forces need to be kept low to prevent chatter on thin-walled parts.
Pro Advice: For MGMN300-04-R PC5300, you can push the feed rate significantly higher than the R0.2 version. If you are experiencing premature wear, increase the feed rate to ensure the chip is thick enough to carry heat away from the edge.
Packaging: 10 pieces per box.
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