Korloy FGD400R-04 PC9030 4mm Single-Ended Grooving Insert for Stainless Steel (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy FGD400R-04 PC9030 is a heavy-duty Single-Ended Parting and Grooving Insert specifically engineered for high-performance machining in Stainless Steel, Heat-Resistant Alloys, and Tough Steels. The 4.0mm width provides an ideal balance of structural strength and material efficiency for large-diameter parting-off. Unlike standard double-ended inserts, the single-ended FGD design offers a massive seating area that maximizes rigidity, preventing vibration and tool deflection in deep-plunge applications. Coated with the premium PC9030 PVD grade, it offers a razor-sharp edge and superior thermal stability to combat work-hardening.
Superior for Gummy Materials: The PC9030 grade is Korloy's top-tier solution for preventing "built-up edge." When grooving 304 or 316 stainless steel, the specialized PVD coating ensures chips slide off the rake face smoothly, protecting your surface finish and extending tool life.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | FGD400R-04 |
| Design | Single-Ended (High Stability) |
| Width (w) | 4.0 mm |
| Grade | PC9030 (Premium PVD for Stainless) |
Core Performance Benefits:
- Maximum Rigid Seating: The single-ended long-body design eliminates the vibration common in dual-ended inserts during deep 4mm cuts.
- Sharp Peripheral Grinding: Optimized for lower cutting forces, which is critical for preventing heat-induced deformation in thin-walled stainless parts.
- Nano-PVD Technology: PC9030 provides a high-toughness substrate that resists micro-chipping in interrupted cuts or scaled surfaces.
- Advanced Chip Management: The FGD chipbreaker is designed to fold chips tighter than 4mm, preventing "bird-nesting" and side-wall marring.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Stainless (304/316) | 70 - 140 m/min | 0.05 - 0.14 mm/rev |
| Titanium / Inconel | 25 - 55 m/min | 0.04 - 0.10 mm/rev |
| High Alloy Steel | 90 - 160 m/min | 0.07 - 0.16 mm/rev |
Compatible Tool Holders:
Ensure maximum performance by pairing with genuine FGDR holders:
- External Grooving Holders: FGDR 2020-4 / FGDR 2525-4 / FGDR 3232-4
The 4mm Advantage: PC9030 vs. NC3030
When machining 4.0mm grooves, selecting the coating is as important as the geometry:
The Stainless Specialist. Its smoother coating prevents material adhesion, making it mandatory for stainless steel and aerospace alloys where precision is key.
The Steel Powerhouse. Better suited for high-speed continuous cutting in carbon steels. It offers higher heat resistance but may cause burrs in gummy stainless.
Machinist's Pro Tip: For 4mm width parting of stainless bars, use high-pressure coolant directed specifically at the cutting edge to wash away stringy chips and prevent heat re-entry into the tool.
Packaging: 10 pieces per box.
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.