KORLOY MGMN300-T PC5300 Indexable Grooving & Parting Inserts | MGMN Series PVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMN300-T PC5300 0.118 inch Metric Grooving Tooling
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KORLOY MGMN300-T PC5300 Indexable Grooving & Parting Inserts (10pcs/box)
High-Durability PVD Coated Double-Ended Carbide Inserts Featuring T-Type Chipbreaker for CNC Lathe Steel and Stainless Steel Grooving & Parting
1. Product Overview: Which insert is best for high-efficiency steel and stainless steel general grooving and parting-off applications?
Which indexable double-ended grooving insert ensures exceptional wear resistance, thermal shock stability, and reliable chip control when executing precision parting-off or 3.0mm wide grooving on CNC turning centers working with alloy steels and stainless steels? Verified by industrial metalworking standards, the KORLOY MGMN300-T PC5300 is engineered specifically for general-purpose grooving and parting tasks that require superior fracture toughness, dual-edge cost-efficiency, and smooth chip evacuation. It features the advanced PC5300 grade—a specialized PVD multi-layer coated carbide substrate optimized for high resistance to built-up edge and thermal cracking under continuous or unstable cutting conditions. Combined with its precision T-type chipbreaker geometry (-T), it effectively controls chip curling and reduces cutting forces during radial feeds.
2. Product Core Advantages (Key Features)
- PC5300 Advanced PVD Grade: Features a high-toughness carbide substrate with a smooth PVD coating designed to minimize friction and resist flank wear in steel and stainless steel turning.
- T-Type Chipbreaker Geometry (-T): Designed with a specialized multi-directional groove form that promotes stable chip breaking across wide feed ranges during general grooving and parting.
- Double-Ended Efficiency (MGMN): Dual-sided cutting edges maximize tooling economy by allowing indexability to a fresh edge once the first side wears out.
- Rigid Central Clamping Interface: Provides high clamping stability and precise seating to eliminate micro-vibrations during heavy parting passes.
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 Double-Ended Grooving | MGMN Double-Ended Grooving |
| Cutting Width ($W$) | 3.0 mm | 0.118 inch (~1/8") |
| Chipbreaker Style | -T (General Grooving) | -T (General Grooving) |
| Recommended Feed ($f$) - Grooving | 0.04 - 0.10 mm/rev | 0.0016 - 0.0039 in/rev |
| Recommended Feed ($f$) - Parting | 0.03 - 0.07 mm/rev | 0.0012 - 0.0028 in/rev |
| Cutting Speed ($Vc$) - Steel / Stainless | 120 - 240 m/min | 395 - 790 SFM |
Model Nomenclature Breakdown: MGMN300-T PC5300
Double-ended grooving
3.0mm cutting width
T-type chipbreaker
PVD 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 lathe operations involving external OD grooving, face grooving, bar stock parting-off, and general-purpose turning across carbon steels, alloy steels, and austenitic stainless steel components.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits standard MGMN-compatible external grooving tool blocks and modular toolholders matching 3.0mm pocket widths.
- Machine Platforms: Designed for CNC turning centers, automatic lathes, and high-productivity production cells.
- Coolant Systems: Fully compatible with flood coolant and high-pressure coolant setups to evacuate chips effectively from 3.0mm channels.
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) | Carbon Steel, Alloy Steel (4140, 1045, 8620) | High toughness PVD grade providing excellent edge retention and thermal crack resistance in steel grooving and parting. | Sandvik GC1125 / Iscar IC908 |
| M Group (Stainless Steel) | Austenitic Stainless Steel (304, 316) | Superior anti-built-up edge characteristics and smooth shear action for gummy stainless steel materials. | Kennametal KCU25 / Kyocera PR1535 |
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 specific cutting conditions is the -T chipbreaker optimized for?
A: The -T chipbreaker is engineered for general-purpose grooving and parting, providing versatile chip breaking control across medium feeds in steels and stainless steels.
Q: How can I prevent tool breakage during parting-off operations on solid bars?
A: Reduce the feed rate by 30% to 50% when approaching the center axis of exterior stock, and ensure the tool is precisely aligned with the spindle centerline.
Q: How many inserts come in a standard box?
A: Each factory package 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.