Korloy MGMN800-M NC3020 8mm Double-Ended Heavy-Duty Steel Grooving Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy MGMN800-M NC3020 is the heavyweight champion of the MGMN range, featuring an 8.0mm Double-Ended blade engineered for Massive Metal Removal Rates. When parting off the largest industrial shafts or creating wide, deep grooves in high-tensile steel, the 8.0mm width provides the maximum possible structural stability. The NC3020 CVD grade is the high-efficiency specialist, designed to withstand the intense friction and heat generated during wide-path cutting in stable CNC environments.
Unrivaled Material Removal: For heavy machinery, oil & gas, and renewable energy sectors, the MGMN800 series reduces the number of passes required for wide grooves and offers the highest lateral rigidity to eliminate tool "walking" on large diameters.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN800-M |
| Insert Width (w) | 8.0 mm |
| Grade | NC3020 (Premium High-Speed Wear Resistant CVD) |
| Target Material | Carbon Steel / Alloy Steel (Continuous Cut) |
Core Performance Benefits:
- Supreme Rigidity: The 8.0mm cross-section effectively dampens harmonics, ensuring a chatter-free finish even on ultra-large workpieces.
- High-Speed Stability: NC3020's CVD coating acts as a superior thermal barrier, maintaining edge hardness at temperatures that would soften other grades.
- Maximum Efficiency: Wider edges mean fewer tools are needed for wide-groove roughing, significantly shortening cycle times.
- Precision Chip Breaking: The -M chipbreaker is optimized for heavy feeds, curling wide chips into manageable "6" and "9" shapes for easy removal.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Heavy Carbon Steel | 120 - 210 m/min | 0.15 - 0.40 mm/rev |
| High Tensile Alloy Steel | 90 - 170 m/min | 0.12 - 0.35 mm/rev |
| Steel Castings (Stable) | 80 - 150 m/min | 0.15 - 0.30 mm/rev |
Compatible Tool Holders:
Due to the massive torque required, 8.0mm inserts must be used with high-clamping-force holders:
- External Holders: MGEHR 3232-8 / 4040-8 / 5050-8
The Heavy-Duty Guide: NC3020 vs. NC3030
At 8.0mm width, choosing the right grade is vital for preventing machine downtime:
The Productivity Master. Best for stable, high-power CNC lathes and continuous cuts. It survives high heat and abrasive wear longer than any other grade.
The Impact Specialist. Use this if your 8mm cut involves heavy scale, interrupted surfaces, or unstable setups where the tool might "bang."
Machinist's Pro Tip: For the MGMN800-M NC3020, ensure your lathe has the horsepower to maintain surface speed. If the machine "bogs down," reduce the feed rate but keep the speed high to let the CVD coating work effectively. Always check that the tool is exactly on center to avoid excessive flank pressure.
Packaging: 10 pieces per box.
Korloy MGMN800-M price, 8mm wide grooving insert for heavy industry, widest parting tool for large diameter steel, MGMN800-M NC3020 cutting speeds, heavy duty 8.0mm CNC parting insert
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.