Korloy CNMG160612-GR NC3030 Heavy Roughing Insert, Tough CVD (10pcs)
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The Original Korloy CNMG160612-GR NC3030 (ANSI Standard: CNMG 543) is a heavy-duty turning insert engineered for extreme stability and high-impact steel machining. This insert features a 6.35mm thick body to handle intense cutting pressure. The GR (Heavy Roughing) chipbreaker is designed with a reinforced T-land for maximum edge security, while the NC3030 grade provides the highest level of toughness in the Korloy CVD lineup, making it the premier choice for interrupted cuts and machining parts with hard forged skin or scale.
Ultimate Toughness: When NC3020 might chip due to heavy interruptions or unstable setups, the NC3030 grade excels by absorbing mechanical shocks, ensuring continuous production without sudden tool failure.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CNMG160612-GR |
| ANSI Code | CNMG 543 |
| Grade | NC3030 (Maximum Toughness CVD Coating) |
| Nose Radius | 1.2 mm (Heavy Roughing Strength) |
Core Performance Benefits:
- Shock Resistance: NC3030 grade is optimized to handle the repetitive impact of interrupted cuts without edge chipping.
- Heavy Stock Removal: GR geometry allows for aggressive depths of cut (ap) on raw, forged, or uneven steel surfaces.
- Thermal Stability: Thick Al2O3 layer protects the tool during dry machining or high-heat heavy-duty cycles.
- Reduced Downtime: Exceptional reliability translates to fewer tool changes in medium-to-large scale industrial turning.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Forged Steel / Scale | 100 - 200 m/min | 0.25 - 0.60 mm/rev | 3.0 - 8.0 mm |
| Heavy Interrupted Steel | 80 - 180 m/min | 0.30 - 0.55 mm/rev | 2.5 - 7.0 mm |
| Medium Carbon Steel | 120 - 230 m/min | 0.35 - 0.70 mm/rev | 3.0 - 9.0 mm |
Compatible Tool Holders:
For heavy-duty roughing, high-clamping force is essential. We recommend D-Type or M-Type holders:
- External Roughing: MCLNR2525M16 / MCLNR3232P16
Roughing Strategy: NC3030 vs. NC3020
Which toughness level do you need for your roughing pass?
Best for unstable workpieces, heavy interruptions, and forging skin. Prioritizes tool reliability over high speed.
Best for continuous high-speed turning on clean surfaces. Offers better wear resistance but less impact protection.
Machinist's Insight: If your machine is older or your setup isn't perfectly rigid, NC3030 is your best insurance policy. It survives where other inserts shatter.
Packaging: 10 pieces per box.