Korloy FMM500R-04 NC3030 5mm Single-Ended Multi-Functional Grooving Insert (10pcs)
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The Original Korloy FMM500R-04 NC3030 is a heavy-duty Single-Ended Multi-Functional Insert designed for the most demanding Grooving, Side-Turning, and Parting-off tasks. The 5.0mm cutting width provides immense structural strength, while the single-ended architecture ensures maximum clamping stability in the holder—critical for preventing vibration during deep radial plunges or high-load lateral turning. Coated with the robust NC3030 CVD grade, this insert is optimized for Carbon Steel, Alloy Steel, and Forged parts where toughness is paramount.
Heavy-Duty Performance: The FMM 5mm geometry is engineered to handle massive cutting forces. It allows you to combine heavy grooving and profiling operations into a single tool path, significantly reducing cycle times on large-diameter workpieces.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | FMM500R-04 |
| Insert Design | Single-Ended (Heavy Load Capacity) |
| Width (w) | 5.0 mm |
| Grade | NC3030 (Maximum Toughness CVD) |
Core Performance Benefits:
- Maximum Lateral Rigidity: The reinforced single-end body resists the high side-loads of 5mm wide profiling, ensuring superior dimensional accuracy.
- NC3030 Impact Defense: Features a high-toughness substrate that effectively absorbs shocks from interrupted cuts and hard skin on raw materials.
- Enhanced Surface Finish: Despite its heavy-duty nature, the FMM geometry maintains a sharp cutting action to prevent burrs and surface tearing.
- Versatile Tooling: One insert for three operations—reduce your inventory and tool-change downtime.
Recommended Cutting Parameters:
| Operation | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Radial Grooving | 80 - 160 m/min | 0.08 - 0.22 mm/rev |
| Side-Turning (Axial) | 100 - 180 m/min | 0.15 - 0.35 mm/rev |
| Parting-off | 70 - 140 m/min | 0.06 - 0.18 mm/rev |
Compatible Tool Holders:
Due to the 5mm width, use high-rigidity 25mm or 32mm shank holders:
- Multi-Functional Holders: FMMR 2525-5 / FMMR 3232-5
Deep Machining Tip: FMM vs. FGD (5mm)
At 5.0mm width, choosing the right single-end geometry is vital for chip control:
Optimized for Dynamic Profiling. If your job involves widening a groove or turning a radius after plunging, the FMM is your only choice. Its edge is toughened for multi-directional loads.
Optimized for Straight Deep Parting. Use this for standard cut-off work. It lacks the reinforced side-wall geometry of the FMM, making it unsuitable for horizontal turning.
Machinist's Pro Tip: For 5mm FMM inserts, ensure your lathe's clamping force is sufficient. The lateral forces during side-turning can be substantial—always prioritize the largest possible tool holder shank (e.g., 3232) to ensure the NC3030 grade doesn't suffer from vibration-induced chipping.
Packaging: 10 pieces per box.
Korloy FMM500R-04 price, 5mm wide grooving insert for steel, heavy duty CNC side turning tool, NC3030 grade for interrupted cuts, best 5mm parting insert for large diameter steel
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.