Korloy MGMN300-M PC5300 3mm Double-Ended Universal Steel Grooving Insert (10pcs)
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The Original Korloy MGMN300-M PC5300 is the ultimate 3.0mm Double-Ended Universal Grooving Insert. Designed as the most versatile solution in the Korloy lineup, the PC5300 PVD grade is engineered to handle everything from carbon steel to stainless steel, even under unstable or interrupted cutting conditions. If your workshop requires a single 3.0mm insert that can "do it all" with maximum reliability and resistance to chipping, the MGMN300-M PC5300 is the industry standard.
The Toughness Specialist: Unlike specialized wear-resistant grades, PC5300 focuses on edge security. The 3.0mm width provides excellent rigidity, making it the perfect choice for parting-off solid bars where the cut becomes increasingly unstable toward the center.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN300-M |
| Insert Width (w) | 3.0 mm (+/- 0.02) |
| Grade | PC5300 (Universal High-Toughness - PVD) |
| Chipbreaker | -M (Stable Chip Control for Multi-Materials) |
Core Performance Benefits:
- Extreme Chipping Resistance: Sub-micron substrate provides the toughness needed for heavy interrupted cuts and vibrations.
- Multi-Material Versatility: Excellent performance across Steel (P), Stainless Steel (M), and even some Cast Iron (K) applications.
- 3.0mm Industry Standard: The perfect width for general-purpose parting-off, minimizing material waste while maintaining tool life.
- Advanced PVD Coating: New-generation coating technology reduces friction and heat buildup at the cutting edge.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (P) | 100 - 180 m/min | 0.08 - 0.20 mm/rev |
| Alloy Steel (42CrMo) | 80 - 150 m/min | 0.07 - 0.18 mm/rev |
| Stainless Steel (General) | 70 - 130 m/min | 0.06 - 0.15 mm/rev |
Compatible Tool Holders:
Universal 3.0mm compatibility with standard MGEHR/L or internal MGIVR tool bars:
- External Holders: MGEHR 1616-3 / 2020-3 / 2525-3
- Internal Holders: MGIVR 2016-3 / 2520-3 (3.0mm)
The Grade Choice: PC5300 vs. PC9030
Korloy's PVD grades often overlap, but choosing the right one for your 3.0mm groove is key to tool life:
The Universal Protector. Use this if you are cutting a variety of materials or if you face vibrations and interrupted cuts. It is much tougher and prevents edge breakage better than any other grade.
The Stainless Specialist. Optimized specifically for the sticky nature of M-group materials. Choose this for continuous, high-volume stainless steel runs to maximize wear resistance.
Machinist's Pro Tip: For MGMN300-M PC5300, if you are cutting pre-hardened steel or parts with heavy scale, reduce your cutting speed ($Vc$) slightly but maintain a high feed rate. This allows the tough substrate of the PC5300 to work through the hardness without over-heating the coating.
Packaging: 10 pieces per box.
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