Korloy TNMX160404R NC3020 (Right Hand) General Steel Finishing Insert (10pcs)
Price shown is a starting point. Contact us for a precise quote based on your requirements.
The Original Korloy TNMX160404R NC3020 is a highly reliable Right-Hand Triangular Turning Insert designed for Precision Steel Machining (P-Group). Featuring the legendary NC3020 Grade, this insert offers a perfect harmony of wear resistance and edge toughness. The TNMX geometry is engineered to excel in finishing operations, providing low cutting resistance and superior chip evacuation to ensure a flawless surface on your steel components.
The Versatility Champion: Whether you are machining low-carbon mild steel or tough alloy steel, NC3020 provides a stable performance window. It is the "safe bet" for operators who need consistent results across various steel grades without constantly changing tool offsets.
Technical Specifications:
| ISO Designation | TNMX 160404R |
| Hand of Tool | Right Hand (R) |
| Inscribed Circle (IC) | 9.525 mm / (3/8") |
| Thickness (S) | 4.76 mm / (3/16") |
| Corner Radius (r) | 0.4 mm / (1/64") |
| Grade | NC3020 (Universal Steel Specialist CVD) |
Core Performance Benefits:
- Balanced CVD Coating: Thick Al2O3 layer provides excellent heat insulation and resistance to crater wear.
- Precision Finishing: The 0.4mm radius allows for intricate details and high surface brightness (Ra 0.8 - 1.6).
- Lower Cutting Pressure: The TNMX design "slices" through the material, reducing the risk of vibration on small diameter parts.
- Long-Term Stability: NC3020 substrate is toughened to handle the occasional interrupted cut often found in real-world steel turning.
Recommended Cutting Parameters:
| Workpiece Material | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Carbon Steel (1045/S45C) | 180-350 m/min | 0.08-0.20 mm/rev | 0.2-2.0 mm |
| Alloy Steel (4140/SCM440) | 150-280 m/min | 0.06-0.18 mm/rev | 0.2-1.8 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)
- Boring Bars: S25S-WTJNR16 / S20R-WTJNR16
Machinist Tip: Why choose NC3020 for Finishing?
Optimizing your workflow between NC3020 and NC3120:
Maximum Stability. If you are running multiple steel grades (e.g., switching from 1018 to 4140), NC3020 provides the toughest edge to handle varying hardness without chipping.
Maximum Productivity. Choose NC3120 if you are running mass production on pre-hardened steels at very high RPMs. It offers slightly higher wear resistance but is more brittle than NC3020.
Pro Advice: The TNMX geometry works best when you maintain a feed rate (fn) that is at least 0.1mm/rev to ensure the chipbreaker is fully engaged, preventing long, stringy chips from damaging the finished surface.
Packaging: 10 pieces per box.
TNMX 160404R for precision steel turning, Korloy NC3020 vs NC3120 performance, right hand finishing inserts for 1045 steel, best value CNC inserts for steel, TNMX series precision lathe inserts
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.