Korloy MGMN250-M PC215K 2.5mm Double-Ended Cast Iron Grooving Insert (10pcs)
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The Original Korloy MGMN250-M PC215K is a specialized 2.5mm Double-Ended Grooving Insert engineered for High-Reliability Cast Iron Machining. Designed for the K-group material spectrum, the PC215K PVD grade is the professional choice for Gray Iron (GG) and Ductile Iron (GGG). Its advanced coating technology and micro-grain carbide substrate are specifically combined to combat the abrasive wear and micro-chipping often encountered in cast iron components.
The 2.5mm Sweet Spot: MGMN250 provides significantly higher tool rigidity than 2.0mm inserts while maintaining a narrower kerf than 3.0mm models. In cast iron machining, this stability is crucial for maintaining tight tolerances and a smooth surface finish.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN250-M |
| Insert Width (w) | 2.5 mm |
| Grade | PC215K (Precision Cast Iron Specialist - PVD) |
| Chipbreaker | -M (Universal Stable Geometry) |
Core Performance Benefits:
- Exceptional Edge Toughness: Specialized PVD coating prevents the "peeling" of the cutting edge when hitting hard spots in castings.
- Optimized for Iron Alloys: Reduces the chemical-wear reaction between the tool and the workpiece material.
- Balanced Dimensions: 2.5mm width offers a perfect compromise between material savings and tool holder strength.
- Versatile PVD Protection: Superior performance in interrupted cuts compared to thicker CVD coatings.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Gray Iron (HT200/GG20) | 110 - 210 m/min | 0.06 - 0.16 mm/rev |
| Ductile Iron (QT500/GGG50) | 90 - 170 m/min | 0.05 - 0.14 mm/rev |
| Chilled Cast Iron | 40 - 80 m/min | 0.04 - 0.10 mm/rev |
Compatible Tool Holders:
For best results, use dedicated 2.5mm MGEHR/L tool bars:
- External Holders: MGEHR 1616-2.5 / 2020-2.5 / 2525-2.5
Cast Iron Pro-Tip: PC215K vs. NC6210
Korloy provides two distinct technologies for K-group materials:
The Precision Blade. A PVD grade that is sharper and more impact-resistant. Best for 2.0mm-3.0mm width grooving where edge integrity and detail are key.
The Speed Specialist. A CVD grade with thick coatings. Best for 5.0mm+ widths and high-volume roughing where heat and abrasive wear resistance are the main concerns.
Machinist's Pro Tip: When using the MGMN250-M PC215K on cast iron, pay attention to the dust. Iron dust is highly abrasive; ensuring a consistent feed rate helps the -M chipbreaker carry the particles away from the tool-holder seat, preventing premature holder wear.
Packaging: 10 pieces per box.
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