Korloy MGMN300-M PC215K 3mm Double-Ended Precision Cast Iron Grooving Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMN300-M PC215K is the professional benchmark for 3.0mm Double-Ended Grooving in Cast Iron Machining. Engineered with the high-performance PC215K PVD grade, this insert is specifically designed to tackle the abrasive nature of Gray Cast Iron (GG) and Ductile Iron (GGG). Its unique micro-grain substrate provides the edge toughness required to prevent chipping, ensuring superior surface finish and consistent dimensional accuracy in high-precision CNC operations.
Engineered for Iron: The 3.0mm width provides excellent rigidity for stable deep-groove cutting. The PC215K grade’s sharp cutting edge reduces cutting forces, making it ideal for precision cast components where vibration control is essential.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-M |
| Insert Width (w) | 3.0 mm (+/- 0.02) |
| Grade | PC215K (High-Performance Cast Iron - PVD) |
| Chipbreaker | -M (Stable Geometry for General Machining) |
Core Performance Benefits:
- Edge Integrity: The PVD coating is specifically bonded to prevent delamination when cutting through the abrasive skin of castings.
- Optimized Rigidity: The 3.0mm profile is the perfect standard for general-purpose parting and deep grooving.
- Superior Finish: PC215K's sharp edge geometry delivers a high-quality surface finish even on brittle gray iron.
- Reduced Tool Pressure: Lower cutting resistance compared to CVD grades, protecting the machine spindle and tool holder.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Gray Iron (HT250/GG25) | 120 - 240 m/min | 0.08 - 0.20 mm/rev |
| Ductile Iron (QT500/GGG50) | 100 - 180 m/min | 0.07 - 0.18 mm/rev |
| Malleable Iron | 90 - 170 m/min | 0.08 - 0.18 mm/rev |
Compatible Tool Holders:
Universal 3.0mm compatibility with standard MGEHR/L or MGIVR bars:
- External Holders: MGEHR 1616-3 / 2020-3 / 2525-3
- Internal Holders: MGIVR Series (3.0mm)
Mastering Cast Iron: PC215K vs. NC6210
Korloy offers two specialized technologies for K-group materials. Choosing the right one is key to efficiency:
The Precision Blade. A PVD grade that offers a sharper edge and higher toughness. Best for 2.0mm-4.0mm grooving where edge stability and high-quality finish are required.
The High-Speed Specialist. A thick CVD grade designed for high-heat resistance. Best for large-scale roughing and widths over 5.0mm where abrasive wear resistance at high speeds is the priority.
Machinist's Pro Tip: For MGMN300-M PC215K, ensure your coolant is properly aimed. While PC215K handles heat well, consistent cooling prevents the abrasive iron "dust" from adhering to the cutting edge, which can significantly extend tool life during high-volume production.
Packaging: 10 pieces per box.
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Technical FAQ & Buying Guide
Absolutely. Our CNC carbide inserts (including CNMG, WNMG, DNMG, and APMT series) are manufactured strictly adhering to international ISO/ANSI specifications. A CNMG 120408 from OYYU BEYOND will flawlessly fit any standard turning tool holder or indexable tool from major global brands like Sandvik Coromant, Kennametal, Iscar, Walter, or SECO, providing a highly cost-effective premium alternative without sacrificing tolerance or tool life.
We offer optimized CVD and PVD multi-layer coatings for different ISO material groups:
- For Carbon/Alloy Steel (ISO P): Choose our thick multi-layer CVD coated grades (e.g., Al2O3 + TiN). They provide exceptional crater wear resistance and thermal barriers during high-speed dry or wet roughing.
- For Stainless Steel (ISO M): Choose our nano-structured PVD coated grades with sharp, positive chipbreakers (like -TM or -MA). This combination prevents work hardening and effectively controls sticky chips.
The optimal cutting parameters vary depending on the workpiece hardness and operation type:
- For General Steel Turnings: Recommended cutting speed ($V_c$) ranges from 150 to 280 m/min, with a feed rate ($f$) of 0.15 to 0.45 mm/rev.
- For Stainless Steel Finishing: Recommended cutting speed ($V_c$) is 120 to 200 m/min, with a feed rate ($f$) of 0.10 to 0.25 mm/rev.Always adjust parameters based on early wear patterns: increase $V_c$ if built-up edge occurs, or reduce $V_c$ if severe flank wear is observed.
Yes, we support machine shops, distributors, and global buyers with tiered wholesale pricing and competitive volume discounts. We also provide OEM custom manufacturing solutions for tool holders and carbide inserts based on your technical drawings. Contact our team to request a quick B2B quotation.
We provide secure worldwide express shipping (via DHL, FedEx, and UPS) with specialized, vibration-proof industrial packaging to ensure tools arrive in perfect condition. In-stock items are dispatched within 24-48 hours, while custom or bulk orders typically have a stable lead time of 15-25 days.
All our cutting tools and tool holders are manufactured strictly in accordance with ISO 9001 and international industrial standards. Every batch undergoes 100% rigorous quality control testing using high-precision optical measuring equipment to ensure reliable tool life and stable performance in continuous mass production.