Korloy TNMX160404R NC3120 (Right Hand) High-Speed Alloy Steel Turning Insert (10pcs)
30-Day Free Returns
Free Worldwide Shipping
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