KORLOY MGMR300-6D-PT PC5300 Indexable Grooving & Parting Inserts | MGMR Series PVD Coated Carbide Inserts for CNC Lathes (10pcs/box) / MGMR300-6D-PT PC5300 0.118 inch Metric Grooving Tooling
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KORLOY MGMR300-6D-PT PC5300 Indexable Grooving & Parting Inserts (10pcs/box)
High-Durability PVD Coated Carbide Inserts for CNC Lathe Steel and Stainless Steel Grooving, Parting-Off, and Turning Applications
1. Product Overview: Which insert is best for high-efficiency steel and stainless steel grooving and parting applications?
Which indexable grooving insert ensures exceptional wear resistance, thermal shock stability, and reliable chip control when executing deep parting-off or 3.0mm grooving on CNC turning centers working with alloy steels and stainless steels? Verified by industrial metalworking standards, the KORLOY MGMR300-6D-PT PC5300 is engineered specifically for demanding metalcutting tasks that require superior fracture toughness 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 interrupted or continuous cutting conditions. Combined with its precision PT-type chipbreaker geometry, it controls chip formation and reduces cutting forces during deep radial feeds.
2. Product Core Advantages (Key Features)
- PC5300 Advanced PVD Grade: Features a tough carbide substrate with a smooth PVD coating designed to minimize friction and resist wear in steel and stainless steel turning.
- PT-Type Chipbreaker Geometry: Engineered with a positive rake angle and specialized groove profile to ensure controlled chip curling and clean evacuation from 3.0mm wide channels.
- 6D Depth Capability: Optimized design structure supporting deeper grooving and parting profiles up to 6 times the width ratio under stable setups.
- Rigid Locating Interface: Provides high clamping stability and precise indexability 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 | MGMR Grooving & Parting | MGMR Grooving & Parting |
| Cutting Width ($W$) | 3.0 mm | 0.118 inch (~1/8") |
| Depth Ratio Capacity | Up to 6D Depth | Up to 6D Depth |
| Recommended Feed ($f$) - Grooving | 0.04 - 0.10 mm/rev | 0.0016 - 0.0039 in/rev |
| Recommended Feed ($f$) - Parting | 0.03 - 0.08 mm/rev | 0.0012 - 0.0031 in/rev |
| Cutting Speed ($Vc$) - Steel / Stainless | 120 - 240 m/min | 395 - 790 SFM |
Model Nomenclature Breakdown: MGMR300-6D-PT PC5300
Grooving geometry
3.0mm cutting width
Up to 6D depth capacity
Positive chipbreaker
PVD Coated Grade
Looking for precision external grooving toolholders or parting blades designed for secure MGMR 300 insert clamping?
Explore Compatible External Grooving Tool Holders & Parting Blades4. Product Application Scenarios
Ideal for high-precision CNC lathe operations involving deep external OD grooving, face grooving, bar stock parting-off, and profile turning across carbon steels, alloy steels, and austenitic stainless steel workpieces.
5. Compatibility (Tooling & Equipment)
- Tool Holders: Fits standard MGMR-compatible external grooving blocks, tool blades, and modular parting systems matching 3.0mm pocket dimensions.
- Machine Platforms: Designed for CNC turning centers, Swiss-type lathes, and multi-axis lathe turning machines.
- Coolant Systems: Fully compatible with high-pressure coolant and flood coolant systems to assist chip evacuation in deep 6D grooving operations.
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) | High toughness PVD grade providing excellent edge retention and thermal crack resistance in steel parting. | Sandvik GC1125 / Iscar IC808 |
| M Group (Stainless Steel) | Austenitic Stainless Steel (304, 316) | Excellent 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 benefits does the PC5300 PVD grade offer when machining stainless steel and alloy steel?
A: PC5300 combines a high-toughness carbide substrate with a smooth PVD coating that resists thermal wear and built-up edge, resulting in superior performance during deep 6D grooving and parting tasks.
Q: How should feed rate be handled when reaching the center during parting-off with a 3.0mm insert?
A: It is recommended to reduce the feed rate by 30% to 50% when the insert reaches the last 0.8mm of the center axis to eliminate burrs and protect the insert tip from impact shock.
Q: How many inserts are included in each package?
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.