Korloy FMM400R-04 NC3030 4mm Single-Ended Multi-Functional Grooving Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy FMM400R-04 NC3030 is a heavy-duty Single-Ended Multi-Functional Insert specifically engineered for Grooving, Side-Turning, and Parting-off operations. The 4.0mm cutting width combined with the single-ended design provides maximum seating rigidity, making it superior for Deep Grooving where tool deflection must be avoided. Coated with the high-toughness NC3030 CVD grade, this insert excels in machining Carbon Steels, Alloy Steels, and parts with interrupted surfaces or tough scales.
Engineered for Versatility: The FMM series features a reinforced chipbreaker geometry that allows for both radial plunging and axial turning. This enables you to finish complex profiles and wide grooves with a single tool, significantly reducing cycle times in high-production environments.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | FMM400R-04 |
| Insert Design | Single-Ended (Maximum Stability) |
| Width (w) | 4.0 mm |
| Grade | NC3030 (Premium CVD for Steel) |
Core Performance Benefits:
- Multi-Directional Machining: Seamlessly switch between plunging and longitudinal turning without secondary tool setups.
- Single-Ended Rigid Seat: The long insert body provides a massive clamping surface, effectively eliminating vibration during heavy 4mm side-turning.
- Exceptional Toughness: NC3030 grade utilizes a specialized substrate that resists micro-chipping even in the most demanding interrupted cutting conditions.
- Optimized Chip Evacuation: The M-type chipbreaker ensures tight chip curls, preventing surface damage and tool overheating.
Recommended Cutting Parameters:
| Operation | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Radial Grooving | 90 - 170 m/min | 0.07 - 0.18 mm/rev |
| Side-Turning (Axial) | 110 - 190 m/min | 0.12 - 0.30 mm/rev |
| Parting-off | 80 - 150 m/min | 0.05 - 0.15 mm/rev |
Compatible Tool Holders:
Ensure maximum performance by pairing with high-rigidity FMMR holders:
- Multi-Functional Holders: FMMR 2020-4 / FMMR 2525-4 / FMMR 3232-4
The Single-Ended Specialist: FMM vs. FGD
Choosing the right geometry for your 4.0mm application is key to tool life:
Best for Grooving + Side Turning. The edge is specifically honed to handle the lateral loads of longitudinal turning. Mandatory for complex profile work.
Best for Direct Parting & Grooving. While highly stable in radial plunging, it is NOT designed for side-turning. Use FGD only for simple cut-off tasks.
Machinist's Pro Tip: For 4mm width lateral turning, always maintain a consistent feed rate. Reducing the feed too much can cause the insert to rub rather than cut, leading to rapid work-hardening of the steel and premature wear of the NC3030 coating.
Packaging: 10 pieces per box.
Korloy FMM400R-04 price, 4mm single end grooving insert for steel, CNC side turning and profiling tool, NC3030 grade for interrupted steel cutting, FMM400R-04 multi-function insert specs
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.