Korloy TNMX160408R NC3020 (Right Hand) Universal Steel Semi-Finishing Insert (10pcs)
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The Original Korloy TNMX160408R NC3020 is a versatile Right-Hand Triangular Turning Insert engineered as the primary solution for General Steel Machining (P-Group). Built on the foundation of the NC3020 Grade, it offers an unbeatable balance of wear resistance and edge toughness. The TNMX geometry is specifically designed for medium-duty cutting, providing consistent chip breaking and high process reliability across a wide variety of steel types.
The Reliable Workhorse: NC3020 is widely recognized by CNC operators globally for its stability. Whether you are dealing with inconsistent material hardness or slightly unstable setups, the TNMX160408R NC3020 provides a forgiving and dependable cutting experience.
Technical Specifications (Metric & Imperial):
| ISO Designation | TNMX 160408R |
| Hand of Tool | Right Hand (R) |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.8 mm / (1/32") |
| Grade | NC3020 (Universal Steel Specialist CVD) |
Core Performance Benefits:
- Multi-Layer CVD Coating: Thick Al2O3 layer protects against high-speed friction and chemical wear.
- Optimized 0.8mm Radius: Provides high edge strength for semi-roughing while maintaining the ability to produce fine finishes.
- Superior Heat Resistance: NC3020 substrate and coating are fine-tuned to prevent thermal cracking during continuous turning.
- Excellent Chip Management: TNMX geometry creates manageable "6" or "9" shaped chips, protecting your workpiece and machine components.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Low Carbon Steel (1018/1020) | 180-360 m/min | 0.15-0.45 mm/rev | 0.5-4.0 mm |
| Alloy Steel (4140/4340) | 140-280 m/min | 0.12-0.38 mm/rev | 0.5-3.5 mm |
| Tool Steel (Pre-hardened) | 110-190 m/min | 0.10-0.30 mm/rev | 0.5-2.5 mm |
Compatible Tool Holders:
Fits all standard Right-Hand (R) or Neutral (N) tool holders designed for 16-size inserts:
- External Holders: MTJNR 2020K16 / MTJNR 2525M16 (ANSI 12-4B / 16-4D)
- Internal Boring Bars: S25S-WTJNR16 / S32T-WTJNR16
Machinist Tip: NC3020 vs. NC3120 Selection
How to choose between Korloy’s top steel grades:
Best for Versatility. Choose this grade if your machine has moderate rigidity, if you face interrupted cuts, or if you machine a wide mix of carbon and alloy steels daily. It is the toughest "all-rounder."
Best for Productivity. Upgrade to NC3120 if you are performing continuous high-speed finishing on hardened alloy steels. It is harder and more wear-resistant, but more prone to chipping under shock.
Pro Advice: For best results with the TNMX geometry, always use Flood Coolant. This helps the CVD coating reach its full thermal potential and ensures the chips are flushed away from the cutting zone immediately.
Packaging: 10 pieces per box.
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