Korloy FGD400R-04 NC3030 4mm Single-Ended Grooving & Parting Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy FGD400R-04 NC3030 is a heavy-duty Single-Ended Parting and Grooving Insert engineered for maximum stability in challenging Steel (P) applications. With a robust 4.0mm cutting width and a 0.4mm corner radius, this insert is the professional choice for deep-grooving and parting-off large diameter workpieces. The single-ended design ensures superior clamping rigidity, preventing the insert from twisting or vibrating under the heavy radial forces common in 4mm-wide cuts. Utilizing the NC3030 CVD coating, it provides unmatched shock resistance for interrupted cuts and rough surfaces.
Heavy-Duty Stability: When machining grooves 4mm wide or larger, tool deflection is a major risk. The FGD400R's single-end architecture provides the massive seating support needed to maintain straight walls and a flat groove bottom, even in tough alloy steels.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | FGD400R-04 |
| Insert Design | Single-Ended (Heavy Load Capacity) |
| Width (w) | 4.0 mm |
| Grade | NC3030 (Premium Tough-CVD) |
Core Performance Benefits:
- Maximum Rigidness: The long-shank single-end body design eliminates vibration during deep parting operations in large bars.
- Interrupted Cut Excellence: The NC3030 grade is specially formulated to prevent chipping when hitting hex corners, cross-holes, or uneven surfaces.
- Proprietary Chipbreaker: FGD's geometry forces chips to collapse into a "C" shape narrower than 4mm, protecting the finished side-walls from scratches.
- Advanced Thermal Shield: CVD coating technology handles the immense heat of 4mm wide friction, extending tool life in mass production.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (AISI 1045) | 110 - 200 m/min | 0.10 - 0.22 mm/rev |
| Alloy Steel (4140/SCM440) | 90 - 160 m/min | 0.07 - 0.18 mm/rev |
| Forged Steel / Heavy Castings | 70 - 130 m/min | 0.07 - 0.15 mm/rev |
Compatible Tool Holders:
Requires Korloy FGD style 4mm specific holders:
- External Grooving Bar: FGDR / FGDR 2020-4 / 2525-4
The 4mm Powerhouse: NC3030 vs. PC9030
When machining 4mm wide grooves, the choice of grade defines your tool life:
The Impact King. Designed for heavy-duty steel machining. It thrives in high-heat environments and handles vibrations far better than PVD grades.
The Precision Specialist. Switch to this only if you are grooving Stainless Steel or require a razor-sharp edge for very soft, gummy steels.
Machinist's Pro Tip: For 4mm width parting, ensure your coolant is directed precisely at the cutting edge. The wider the insert, the harder it is for coolant to reach the tip inside a deep groove—use high-pressure through-coolant if available.
Packaging: 10 pieces per box.
Korloy FGD400R-04 price, 4mm width parting insert for large steel bars, deep grooving tools for interrupted cuts, NC3030 vs NC3020 for 4mm grooves, heavy duty CNC parting tool 4mm
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.