Korloy MGMN500-M NC3030 5mm 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 MGMN500-M NC3030 is a powerhouse 5.0mm Double-Ended Grooving Insert engineered for Extreme Duty Steel Machining. When your application involves parting off large solid bars or grooving deep into high-tensile alloy steels, the 5.0mm width provides the maximum possible lateral stability. The NC3030 CVD grade acts as a shock-absorbing shield, making it the most reliable choice for interrupted cuts on large forged parts or workpieces with rough, unmachined surfaces.
Built for the Big Jobs: The MGMN500 series is designed for machines with high spindle torque. The 5.0mm blade thickness resists bending and vibration even when plunging deep into tough carbon steels (45#/1045) and alloy steels (40Cr/4140).
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | MGMN500-M |
| Insert Width (w) | 5.0 mm |
| Grade | NC3030 (Maximum Toughness CVD) |
| Application | Steel / Cast Steel / Heavy Interrupted Cuts |
Core Performance Benefits:
- Maximum Rigidness: The 5.0mm width is the ultimate defense against tool deflection in deep grooving operations.
- CVD Multi-Layer Coating: Features a thick Al2O3 layer that provides exceptional heat resistance during the long cut-times required for large bars.
- Superior Toughness: NC3030 is specially formulated to prevent chipping even when hitting sand holes or scale in cast steel.
- Optimized Chip Control: The -M geometry curls chips effectively to prevent them from birds-nesting in wide, deep grooves.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) |
|---|---|---|
| Carbon Steel (Roughing) | 90 - 180 m/min | 0.12 - 0.30 mm/rev |
| Alloy Steel (Heavy Cut) | 70 - 150 m/min | 0.10 - 0.25 mm/rev |
| Cast Steel / Forged Steel | 50 - 120 m/min | 0.12 - 0.22 mm/rev |
Compatible Tool Holders:
Must be used with heavy-duty 5.0mm MGEHR/L external holders:
- External Holders: MGEHR 2525-5 / 3232-5
The Heavy-Duty Tip: NC3030 vs. NC3120
When using a 5.0mm insert, you are likely dealing with high-torque applications. Choose your grade carefully:
The Tough Guardian. Specifically for unstable cuts, manual lathes, or heavy vibrations. It will not snap suddenly when the pressure gets intense.
The Wear Expert. Best for stable CNC production at higher speeds. Offers more flank wear resistance but is more brittle than NC3030.
Machinist's Pro Tip: For 5.0mm parting, ensure your coolant pressure is high. At these widths, heat builds up rapidly in the center of the groove. Using NC3030 provides the safety margin you need, but proper lubrication is what will get you to the finish line on a large $200mm$ bar.
Packaging: 10 pieces per box.
Korloy MGMN500-M price, 5mm wide parting tool for large diameter steel, heavy duty grooving insert for 100mm+ bars, NC3030 vs NC3120 for 5.0mm inserts, extra wide double-ended 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.