Korloy FGD400R-04 PC9030 4mm Single-Ended Grooving Insert for Stainless Steel (10pcs)
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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.