Korloy CCMT09T308-HMP NC3120 Universal Steel Turning Insert (10pcs)
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The Original Korloy CCMT09T304-HMP NC3120 is the premier "All-Rounder" solution for steel turning applications. Engineered as a balanced grade, the NC3120 sits perfectly between high-wear resistance and impact toughness. This makes it the most versatile insert in your toolbox, capable of handling continuous cuts as well as light interrupted machining across a wide variety of steel alloys.
Technical Specifications:
| Brand | Korloy (100% Genuine) |
| ISO Code | CCMT09T308-HMP |
| Grade | NC3120 (Universal Balance Grade) |
| Nose Radius | 0.8 mm (High Edge Strength) |
| Chipbreaker | HMP (Medium-Duty Performance) |
Core Performance Benefits:
- Universal Efficiency: The NC3120 grade eliminates the need for constant tool changes by performing reliably across stable and semi-stable steel turning tasks.
- Enhanced Edge Strength: The 0.8mm nose radius provides a robust cutting edge, allowing for higher feed rates and deeper cuts without risking premature chipping.
- Optimized CVD Coating: A specialized coating layer provides superior thermal resistance, ensuring consistent tool life in medium-to-high speed operations.
- Excellent Surface & Feed Balance: Designed to provide a stable surface finish even when pushing for higher metal removal rates (MRR).
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (f) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (HB180-280) | 150 - 320 m/min | 0.15 - 0.40 mm/rev | 0.8 - 4.0 mm |
| Alloy Steel (HB280-350) | 120 - 250 m/min | 0.12 - 0.35 mm/rev | 0.8 - 3.5 mm |
Compatible Tool Holders:
To leverage the strength of the R0.8 radius, pair this insert with standard SCLCR/L tool holders (Size 09):
- External Turning: SCLCR1212H09 / SCLCR1616H09 / SCLCR2020K09
- Boring Bars (Internal): S16Q-SCLCR09 / S20R-SCLCR09
Quick Guide: Korloy Steel Grade Selection
Which NC grade fits your CNC setup?
Best for high-speed, continuous cutting in very rigid machines.
The perfect balance. Reliable for most steel turning applications.
Best for heavy interrupted cuts and shaky/unstable conditions.
Machinist's Tip: This R0.8 version of the NC3120 is excellent for roughing passes where you need to remove material quickly but still want the flexibility of a universal grade.
Packaging: 10 pieces per box.