Korloy SNMG150612-GR NC3030 Heavy-Duty Roughing Insert for Interrupted Steel (10pcs)
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The Original Korloy SNMG150612-GR NC3030 is a powerhouse Double-Sided Square Turning Insert engineered for the most aggressive Steel (P-Group) machining. With a robust 1.2mm Corner Radius and the heavy-duty 1506 thickness (6.35mm), this insert is built for maximum metal removal rates (MRR) and incredible impact resistance. The NC3030 CVD Grade is Korloy’s toughest solution for interrupted cuts, forged surfaces, and unstable machining environments.
Superior Edge Strength: The 1.2mm radius significantly increases the tool's resistance to chipping under heavy loads. Combined with the -GR (Roughing) chipbreaker, it excels in removing hard exterior skins of raw forgings and handling deep, aggressive cuts.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | SNMG150612-GR |
| Corner Radius | 1.2 mm (High Feed Efficiency) |
| Insert Thickness | 6.35 mm (Heavy Duty) |
| Grade | NC3030 (Ultra-Tough CVD Coating) |
Core Performance Benefits:
- Maximum Toughness: Specialized NC3030 substrate prevents crack propagation during heavy interrupted machining.
- Enhanced Surface Finish: The 1.2mm radius allows for higher feed rates while maintaining a stable surface roughness.
- Aggressive Metal Removal: Reinforced -GR chipbreaker pocket ensures smooth chip flow even at deep cuts (up to 8mm).
- Long Tool Life: Advanced CVD coating technology provides superior heat and wear resistance in continuous heavy roughing.
Recommended Cutting Parameters (Heavy Roughing):
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (Roughing) | 130 - 250 m/min | 0.35 - 0.75 mm/rev | 2.5 - 8.0 mm |
| Alloy Steel (Forged) | 100 - 200 m/min | 0.30 - 0.65 mm/rev | 2.0 - 7.0 mm |
| Severe Interruption | 70 - 140 m/min | 0.25 - 0.50 mm/rev | 1.5 - 5.0 mm |
Compatible Tool Holders:
Requires 15.875mm (5/8") IC negative tool holders:
- External Heavy Turning: MSSNR 2525M15 / 3232P15
Machinist Tip: When to choose SNMG150612-GR?
Optimizing your performance in heavy steel turning:
Unstable Conditions. If your machine is older, the workpiece is massive, or you are cutting through pre-machined holes or slots, NC3030 is the safest choice to avoid edge fracture.
General Turning. For clean, continuous cuts in medium-hard steel, NC3120 offers higher cutting speeds ($V_c$) and better wear resistance than NC3030.
Pro Advice: With a 1.2mm radius, you can push the feed rate ($f_n$) higher than with a 0.8mm radius. This helps in thinning the chip and moving heat into the chip instead of the insert, extending tool life significantly.
Packaging: 10 pieces per box.
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