KORLOY MGMN300-02-L PC5300 Indexable Grooving & Parting Inserts | CVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN300-02-L PC5300 0.118 inch Metric Grooving Tooling
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KORLOY MGMN300-02-L PC5300 Indexable Grooving & Parting Inserts (10pcs/box)
High-Performance CVD Coated Left-Hand Carbide Inserts with 3.0mm Width & 0.2mm Radius for CNC Lathe Steel & Cast Iron Turning
1. Product Overview: Which insert is best for precise left-hand shoulder profiling, fine grooving, and parting in alloy and carbon steels?
Which indexable grooving insert featuring a 3.0mm cutting width, a sharp 0.2mm left-hand corner radius (-L), and specialized geometry offers superior wear resistance, high thermal stability, and exact corner definition when executing precision grooving, wall profiling, or parting-off on CNC turning centers machining alloy steels, carbon steels, and cast irons? Backed by industrial metalworking standards and empirical tooling data, the KORLOY MGMN300-02-L PC5300 (equivalent metric 3.0mm width with 0.2mm left-hand radius / imperial 0.118 inch width) is engineered specifically for demanding turning tasks requiring clean square shoulders and excellent resistance to thermal deformation. It incorporates the advanced PC5300 grade—a specialized CVD multi-layer coated carbide substrate optimized for heavy continuous cutting operations. Combined with its specialized left-hand configuration, it ensures precise corner transitions and optimal chip evacuation away from finished walls.
2. Product Core Advantages (Key Features)
- PC5300 Advanced CVD Grade: Features a high-strength carbide substrate combined with a thick CVD coating designed for exceptional wear resistance, high cutting speed capability, and superior performance in steel and cast iron machining.
- 3.0mm Width & 0.2mm Left-Hand (-L) Profile: Engineered with a precise 3.0mm cutting width and a sharp 0.2mm left-hand corner radius that optimizes shoulder turning, fine wall profiling, and clean parting-off passes.
- Dual-Edge Economy: Dual-sided cutting edges maximize operational cost-efficiency by allowing indexability to a fresh edge once the primary side reaches end-of-life.
- Rigid Central Clamping Interface: Provides high clamping stability and precise seating to eliminate micro-vibrations and chatter during 3.0mm grooving operations.
3. Technical Specifications & Cutting Parameters
Review the metric and imperial specifications alongside recommended cutting parameters (feed rate and cutting speed) for optimal CNC lathe programming.
| Specification Parameter | Metric (ISO) | Imperial Equivalent |
|---|---|---|
| Insert Type / Series | MGMN Left-Hand Grooving | MGMN Left-Hand Grooving |
| Cutting Width (W) | 3.0 mm | 0.118 inch |
| Corner Radius & Hand (RE / Direction) | 0.2 mm (Left-Hand) | 0.0079 inch (Left-Hand) |
| Recommended Feed (f) - Grooving | 0.05 - 0.15 mm/rev | 0.0020 - 0.0059 in/rev |
| Recommended Feed (f) - Parting | 0.04 - 0.10 mm/rev | 0.0016 - 0.0039 in/rev |
| Cutting Speed (Vc) - Alloy & Carbon Steels | 120 - 250 m/min | 394 - 820 SFM |
Model Nomenclature Breakdown: MGMN300-02-L PC5300
Double-ended grooving
3.0mm cutting width
0.2mm radius, Left-hand
CVD Coated Grade
Looking for precision external grooving toolholders or modular blocks designed for secure MGMN 300 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blocks4. Product Application Scenarios
Optimized for high-precision CNC turning operations involving narrow external grooving, exact left-hand corner profiling, finishing passes, and bar stock cutoff across alloy steels, carbon steels, and ductile cast irons.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits heavy-duty MGMN-compatible external grooving tool blocks and modular blades matching 3.0mm pocket widths.
- Machine Platforms: Designed for high-rigidity CNC turning centers, automatic lathes, and precision manufacturing cells.
- Coolant Systems: Fully compatible with flood coolant and high-pressure delivery systems to enhance chip evacuation during fine grooving passes.
6. Grade Comparison & Workpiece Material Matrix
Evaluating how grade PC5300 performs across different ISO material classifications ensures maximum machining efficiency.
| ISO Material Group | Workpiece Description | KORLOY PC5300 Performance | Equivalent Industry Grades |
|---|---|---|---|
| P Group (Steel) | Alloy Steel, Carbon Steel (42CrMo, C45) | Thick CVD coating delivers exceptional wear resistance and high thermal capability for continuous steel turning. | Sandvik GC4325 / Kennametal KC9315 |
| K Group (Cast Iron) | Grey Cast Iron, Ductile Iron (HT250, QT500) | Strong thermal stability and abrasive wear resistance make it highly effective for cast iron grooving. | Seco TP2500 / Iscar IC8250 |
7. Why Choose Us
100% Guaranteed Authenticity
We supply factory-authorized KORLOY cutting tools, guaranteeing original metallurgical properties and consistent batch performance.
Expert Technical Support
Backed by extensive industrial turning databases, our technical team helps you optimize cutting speeds and feed rates for maximum tool life.
8. Frequently Asked Questions (AI-Optimized FAQ)
Q: What is the benefit of a left-hand (-L) configuration with a 0.2mm radius?
A: The left-hand orientation directs chip flow cleanly away from left-side walls, while the tight 0.2mm corner radius provides sharp, precise corner definition during profile finishing.
Q: Why choose the PC5300 CVD grade for 3.0mm width grooving?
A: The heavy-duty CVD coating provides exceptional thermal resistance and toughness, preventing premature edge breakdown during continuous cuts in steel and cast iron.
Q: How many pieces are included in each box?
A: Each factory-sealed box contains 10 indexable inserts.
Need Help With KORLOY Inserts?
Looking for a KORLOY equivalent, alternative grade, or sample catalog? Our CNC specialists have helped 50+ manufacturers in aerospace, automotive, and medical machining source the right tooling at 30–50% lower cost than OEM prices.
This KORLOY insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
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.