Korloy MGMN400-M PC5300 4mm Double-Ended Universal Steel Grooving Insert (10pcs)
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The Original Korloy MGMN400-M PC5300 is a heavy-duty 4.0mm Double-Ended Universal Grooving Insert. Built upon Korloy's most resilient PVD technology, the PC5300 grade is specifically designed to excel where other inserts fail: in interrupted cuts, unstable setups, and high-tensile alloy steels. The 4.0mm width provides massive structural integrity, making the MGMN400-M the standard choice for workshops dealing with a wide variety of materials and demanding cutting conditions.
The Ultimate Generalist: Whether you are cutting carbon steel, pre-hardened alloys, or moderate stainless steel, the PC5300 grade ensures maximum edge security. It is particularly effective at 4.0mm for deep radial grooving where vibration control is paramount.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN400-M |
| Insert Width (w) | 4.0 mm (+/- 0.03) |
| Grade | PC5300 (Universal High-Toughness PVD) |
| Main Application | Steel (P), Hardened Steel (H), Interrupted Cuts |
Core Performance Benefits:
- Unmatched Edge Security: Optimized substrate prevents chipping even when encountering holes or keyways during grooving.
- 4.0mm Robust Profile: High resistance to tool deflection, ensuring straight cuts in large-diameter parting operations.
- Wide Material Spectrum: Reduces tool inventory by performing exceptionally well in Steel, Stainless Steel, and Ductile Iron.
- Advanced PVD Shield: Protects the edge from thermal shock and abrasive wear in high-alloy materials.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel / Alloy Steel | 90 - 170 m/min | 0.10 - 0.22 mm/rev |
| Pre-Hardened Steel (HRC30-45) | 50 - 90 m/min | 0.08 - 0.18 mm/rev |
| Ductile Iron (GGG40/50) | 80 - 140 m/min | 0.12 - 0.25 mm/rev |
Compatible Tool Holders:
To fully utilize the strength of a 4.0mm insert, we recommend the following tool holders:
- External Holders: MGEHR 2020-4 / 2525-4 / 3232-4
The Universal Choice: PC5300 vs. PC9030
When selecting your 4.0mm grooving insert, consider the specific challenges of your workpiece:
The Toughness King. Ideal for general steel and situations where the cut is not continuous. It handles shock and vibration much better than specialized grades.
The Stainless Expert. Optimized for the high heat and sticky nature of M-group materials. Use this for high-volume, continuous stainless steel production.
Machinist's Pro Tip: For MGMN400-M PC5300, if you encounter heavy scale on the workpiece surface, keep the feed rate ($f$) high to ensure the 4.0mm edge penetrates the scale quickly, rather than rubbing against it, which extends tool life.
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.