Korloy MGMR300-8D-PT PC5300 3mm Full Radius Profiling Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMR300-8D-PT PC5300 is a premium 3.0mm Full Radius (R1.5) Profiling Insert specifically engineered for complex 3D contouring and deep grooving. Part of the specialized 8D-PT series, this insert features a reinforced geometry that excels in lateral movement and high-vibration environments. Coated with the ultra-tough PC5300 PVD grade, it offers a universal solution for machining Stainless Steel, Heat-Resistant Alloys, and Carbon Steels with extreme precision.
Full Radius Excellence: The "8D-PT" design is optimized for deep-reach profiling. Unlike standard flat-bottom inserts, the full radius (R1.5) geometry allows for seamless multi-axis contouring, making it the ideal choice for hydraulic valve seats, rounded grooves, and artistic CNC profiles.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMR300-8D-PT |
| Insert Shape | Full Radius (Round Nose) |
| Width / Radius | 3.0 mm / R1.5 |
| Grade | PC5300 (Universal High-Toughness PVD) |
Core Performance Benefits:
- Full Radius (R1.5) Versatility: Perfect for creating half-round grooves and smooth transitional radii in CNC profiling.
- 8D Reinforced Substrate: Enhanced tool body strength provides better resistance to the high lateral forces found in deep profiling.
- PT Chipbreaker Technology: Specifically designed to control chips during multi-directional movement (plunging and side-turning).
- PC5300 Universal PVD: A "multi-tool" grade that thrives in work-hardening stainless steels and prevents built-up edge.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Stainless Steel (304/316) | 80 - 140 m/min | 0.05 - 0.15 mm/rev |
| Alloy Steel (4140/42CrMo) | 110 - 200 m/min | 0.08 - 0.20 mm/rev |
| High-Temp Alloys | 30 - 65 m/min | 0.04 - 0.12 mm/rev |
Compatible Tool Holders:
Precision 3.0mm seat fit for all standard MGEHR/MGIVR systems:
- External Holders: MGEHR 2020-3 / 2525-3
- Internal Holders: MGIVR 2520-3 / 3125-3
Machinist Tip: Why the 8D-PT Series?
The MGMR (Full Radius) series is different from standard MGMN inserts:
Deep Profiling Master. The "8D" structure provides extra support under the cutting edge, making it significantly more stable during deep lateral turning than standard full radius inserts.
Versatility. Full radius inserts often encounter varying cutting forces as the contact point moves. PC5300's PVD coating is tough enough to handle these transitions without chipping.
Pro Advice: When using MGMR300-8D-PT for 3D profiling, ensure your CNC's look-ahead and acceleration settings are optimized. Smooth transitions in your toolpath will allow the full R1.5 radius to deliver a mirror-like surface finish.
Packaging: 10 pieces per box.
Korloy MGMR300-8D-PT price, 3mm full radius grooving insert, PC5300 3.0mm round nose insert, deep profiling tool for stainless steel, MGMR300-8D-PT cutting speeds
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.