Korloy MGMN400-T PC5300 4mm Double-Ended Tough Universal Grooving Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMN400-T PC5300 is the most resilient 4.0mm Double-Ended Grooving Insert in the Korloy range. Engineered specifically for heavy-duty interrupted cutting and unstable machining environments, the -T (Tough) geometry features a significantly reinforced cutting edge that prevents catastrophic failure where standard inserts would chip. Paired with the PC5300 universal PVD grade, this insert is a powerhouse for machining heavy shafts, large flanges, and scaly alloy steels.
Built for the Toughest Conditions: The MGMN400-T is your primary "insurance policy" against downtime. When machining 4.0mm wide grooves on large workpieces with uneven surfaces or interruptions like holes and splines, the reinforced edge handles the shock loads effortlessly.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN400-T |
| Insert Width (w) | 4.0 mm (+/- 0.03) |
| Grade | PC5300 (Universal High-Toughness PVD) |
| Chipbreaker | -T (Reinforced Heavy Duty) |
Core Performance Benefits:
- Maximum Impact Resistance: The -T geometry is specifically honed to absorb vibration and mechanical shock in 4mm wide cuts.
- Sub-Micron Universal Grade: PC5300 works across Steel (P), Stainless Steel (M), and Cast Iron (K), simplifying inventory for large-scale shops.
- Excellent Thermal Stability: The advanced PVD coating allows the insert to withstand the high temperatures generated by heavy feed rates in alloy steel.
- Straight Parting Performance: The robust 4.0mm body resists deflection, ensuring accurate and vertical cuts in deep grooves.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon/Alloy Steel (Standard) | 90 - 170 m/min | 0.12 - 0.25 mm/rev |
| Interrupted Alloy Steel | 60 - 110 m/min | 0.10 - 0.20 mm/rev |
| Ductile/Grey Cast Iron | 80 - 140 m/min | 0.15 - 0.28 mm/rev |
Compatible Tool Holders:
To support the high cutting forces of a 4.0mm insert, we recommend heavy-duty holders:
- External Holders: MGEHR 2020-4 / 2525-4 / 3232-4
Machinist Tip: Choosing -T over -M at 4.0mm
At 4.0mm width, the chip load is high. Choosing the right geometry determines your tool cost per part:
The Heavy Lifter. Designed for shock resistance. Use this for interrupted cuts (holes, splines) or when machining rough-surfaced castings where edge chipping is the main concern.
The Speed Specialist. Features a sharper edge. Best for high-volume, continuous cuts in clean steel where chip control and surface finish are more critical than shock resistance.
Pro Secret: For MGMN400-T PC5300, when parting off large solid bars, the "T" geometry allows you to push the feed rate even as you approach the center. This reduces the work-hardening time and prevents the tool from "rubbing" in the final millimeters of the cut.
Packaging: 10 pieces per box.
Korloy MGMN400-T PC5300 for heavy industry, 4.0mm insert for shaft with keyway, MGMN400-T cutting speed and feed, best 4mm parting insert for scaly steel, PC5300 vs PC9030 for 4mm grooves
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.