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.
TNMX 160408R for general steel turning, Korloy NC3020 grade specifications, right hand semi-finishing inserts for 1045 steel, standard CNC inserts for alloy steel, TNMX series chip breaker performance
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.