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