Korloy SNMG150608-GR NC3030 Heavy-Duty Roughing Insert for Steel (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy SNMG150608-GR NC3030 is the ultimate "Toughness Specialist" for the most demanding Steel (P-Group) turning tasks. Engineered with the NC3030 High-Toughness CVD Grade, this insert is specifically designed to survive where others fail: heavy interruptions, forged skins, and unstable machining conditions. The -GR (Roughing) chipbreaker features a reinforced cutting edge that can handle massive chip loads while maintaining structural integrity under high impact.
Maximum Impact Resistance: NC3030 is Korloy's toughest steel grade. If you are machining hexagonal bars, parts with keyways, or raw forgings with uneven surfaces, the combination of a 1506 thickness and the GR geometry provides the highest safety margin against breakage.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG150608-GR |
| Corner Radius | 0.8 mm (Roughing Strength) |
| Insert Thickness | 6.35 mm (Heavy Duty 1506 Size) |
| Grade | NC3030 (Ultra-Tough CVD Coating) |
Core Performance Benefits:
- Shock Absorption: The specialized NC3030 substrate is designed to absorb mechanical shocks, preventing the catastrophic crack propagation common in harder grades.
- Reinforced GR Geometry: The heavy land on the -GR chipbreaker protects the edge during the most violent entries and exits in interrupted cuts.
- CVD Al2O3 Technology: Provides excellent heat protection, allowing for consistent tool life even during heavy-duty dry or wet machining.
- Thick Substrate Stability: The 1506 size offers more carbide "meat" than standard 1204 inserts, providing superior rigidity for large-diameter work.
Recommended Cutting Parameters (Heavy Duty Steel):
| Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (Roughing) | 140 - 260 m/min | 0.30 - 0.70 mm/rev | 2.0 - 8.0 mm |
| Alloy Steel (Forged) | 110 - 210 m/min | 0.25 - 0.60 mm/rev | 1.5 - 7.0 mm |
| Heavy Interruption | 80 - 150 m/min | 0.20 - 0.45 mm/rev | 1.5 - 5.0 mm |
Compatible Tool Holders:
Designed for 15.875mm (5/8") IC negative holders:
- External Roughing: MSSNR 2525M15 / 3232P15
Machinist Tip: Why choose NC3030?
Selecting the right CVD grade for steel turning:
Unbeatable Toughness. This is your "fire extinguisher." Use it when your inserts are chipping or shattering due to heavy interruptions or hard, scaly surfaces.
Speed & Versatility. Switch to NC3120 for general-purpose work or NC3020 for high-speed continuous cutting. NC3030 is slower but significantly more durable in violent cuts.
Pro Advice: When using the -GR chipbreaker, don't be afraid to push the depth of cut ($a_p$). This geometry is built to work hard—feeding too lightly can cause the insert to rub and lead to premature wear.
Packaging: 10 pieces per box.
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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.