Korloy TNMX160404R NC3120 (Right Hand) High-Speed Alloy Steel Turning Insert (10pcs)
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The Original Korloy TNMX160404R NC3120 is a high-performance Right-Hand Triangular Turning Insert meticulously engineered for Precision Steel Machining (P-Group). Optimized with the NC3120 Grade, this insert features a specialized CVD coating that excels in high-heat environments. The TNMX geometry is designed to provide lower cutting resistance and superior chip evacuation, making it the ideal choice for finishing operations where surface quality and dimensional accuracy are paramount.
Built for Speed & Finish: NC3120 is the go-to grade for alloy steels (4140, 4340) and tool steels. Its thick, hard coating structure ensures that the cutting edge remains sharp even when running at high surface speeds, reducing the frequency of tool changes in long production runs.
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 | NC3120 (High-Efficiency CVD for Steel) |
Core Performance Benefits:
- Advanced Thermal Barrier: NC3120 coating layer resists crater wear and thermal cracking during dry or high-speed machining.
- Enhanced Surface Brightness: The TNMX chipbreaker geometry "slices" through material, minimizing the rubbing that leads to dull finishes.
- Tight Tolerance Control: 0.4mm radius ensures high precision in corners and complex profiles.
- Universal Compatibility: Optimized for most standard CNC tool holders used in global manufacturing.
Recommended Cutting Parameters:
| Material Group | Cutting Speed (Vc) | Feed Rate (fn) | Depth of Cut (ap) |
|---|---|---|---|
| Alloy Steel (e.g. 4140) | 180-340 m/min | 0.08-0.22 mm/rev | 0.3-2.0 mm |
| Carbon Steel (e.g. 1045) | 220-400 m/min | 0.10-0.28 mm/rev | 0.5-2.5 mm |
Compatible Tool Holders:
This insert fits standard Right-Hand (R) or Neutral (N) tool holders for 16-size inserts:
- External Holders: MTJNR 2020K16 / MTJNR 2525M16
- Boring Bars: S25S-WTJNR16 / S32T-WTJNR16
Machinist Tip: Maximizing the TNMX Profile
Understanding the Right-Hand (R) Advantage:
NC3120 is specifically harder than NC3020. If your job involves pre-hardened steels, this grade will significantly outlast standard coatings by resisting the abrasive nature of the material.
The TNMX series is often referred to as a "Wiper" alternative or high-efficiency geometry. It allows for a slightly better finish at the same feed rate compared to standard TNMG inserts.
Pro Advice: Always check your tool path. TNMX's unique shape is optimized for longitudinal turning and facing. Ensure your lead angle (usually 93°) is set correctly to maximize chip control.
Packaging: 10 pieces per box.
TNMX 160404R for alloy steel finishing, Korloy NC3120 surface finish quality, right hand precision turning inserts, CVD coated inserts for 4140 steel, high speed CNC steel machining parameters
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.