Taegutec TNMG 160404R-FS TT8115 CVD Insert for High-Speed Steel Finishing (10pcs)
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TaeguTec TNMG 160404R-FS TT8115
Precision Steel Finishing at Peak Cutting Speeds
Product Overview
"Which insert is most effective for achieving mirror-like surface finishes on alloy steel at high RPMs?"
The TaeguTec TNMG 160404R-FS TT8115 is a high-speed finishing specialist for ISO P (Steel) materials. The TT8115 grade utilizes a state-of-the-art CVD coating with high alumina content, providing an incredible thermal barrier and wear resistance for continuous cutting. The FS (Finishing) chipbreaker is engineered for low depth-of-cut precision, featuring a sharp geometry that slices through steel to minimize vibration and prevent surface smearing. With a 0.4mm corner radius and Right-hand (R) design, this insert is the go-to for CNC operators demanding strict dimensional tolerances and elite Ra values.
Key Core Advantages
Optimized for high-speed machining (Vc up to 450 m/min), offering extreme resistance to crater and flank wear.
Excellent chip control at low feeds. Prevents long "stringy" chips from damaging workpiece surfaces or spindles.
Minimal cutting pressure allows for consistent accuracy on delicate parts or slender shafts.
Technical Specifications
Insert Code Decoding: TNMG 160404R-FS
Triangle
Negative
Tolerance
Hole/Chip
0.4 Rad
RH-Finish
| Unit System | Designation | I.C. / Thickness | Radius |
|---|---|---|---|
| Metric (ISO) | TNMG 160404R-FS | 9.525 / 4.76 mm | 0.40 mm |
| Imperial (ANSI) | TNMG 331R-FS | 3/8" / 3/16" | 1/64" |
Recommended Cutting Parameters (TT8115 Grade)
| Material (ISO P) | Vc (Speed m/min) | fn (Feed mm/rev) |
|---|---|---|
| Carbon / Alloy Steel | 220 - 450 | 0.05 - 0.20 |
| Cast Steel | 200 - 380 | 0.08 - 0.25 |
Right-Hand System Match
Applications & Tool Compatibility
- Automotive: Final turning of transmission gears and high-tensile steel shafts.
- Precision Engineering: Ideal for threaded components and thin-walled tubes requiring low pressure.
- General Lathe Work: Universal choice for fine-finishing of all 10xx, 41xx, and 86xx series steels.
- Compatibility: Fits all ISO-standard TNMG 16 size right-hand holders (MTJNR, PSSNR, MTFNR).
TaeguTec Steel Grade Performance Chart
| Grade | Application | Coating | Cutting Speed |
|---|---|---|---|
| TT8115 | High-Speed Finishing | CVD Alumina | Highest |
| TT9225 | General Turning | CVD | Medium-High |
| TT8125 | Interrupted Cutting | CVD | Medium |
Why Machinists Choose TT8115?
The **TT8115** is TaeguTec's pinnacle for steel finishing efficiency. When cycle times matter and tool life can't be compromised, this CVD grade delivers stable performance at cutting speeds that would burn through standard carbide. The **FS geometry** ensures your chips never "nest," keeping your automated lathes running safely. With 6 cutting edges per insert, this TNMG geometry provides the lowest cost-per-part for high-volume steel finishing operations.
"Amazing finish on 4140 steel. We were able to jump from 250 to 400 m/min without losing tool life."
— Robert L., USA"Die beste Wahl für die Feinbearbeitung. Die Oberflächengüte ist erstklassig."
— Hans G., Germany"Eccellente controllo del truciolo a basse profondità di passata."
— Marco B., Italy"Predictable tool wear. Essential for our automated turning cells."
— Satoshi N., JapanFrequently Asked Questions
A: No. For stainless steel, we strongly recommend the PVD-coated TT9080 grade to avoid the chemical wear associated with ISO M materials.
A: The FS is optimized for light finishing. For best chip control, keep the depth of cut (ap) below 1.5mm.
A: While TT8115 is stable, it is optimized for high-speed continuous cuts. For heavy interruptions in steel, the TT8125 grade is a tougher alternative.
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.