Taegutec TCMT16T308PC TT8125 Carbide Insert for CNC Finish Turning (10pcs)
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TaeguTec TCMT16T308PC TT8125
Advanced CVD Technology for High-Velocity Steel Finishing
Product Overview
"Which insert is the most efficient for high-speed finishing of alloy steels while maintaining a mirror surface finish?"
The TaeguTec TCMT16T308PC TT8125 is a high-performance 16mm triangular insert engineered for Steel (ISO P) applications. Featuring the specialized TT8125 CVD grade, it utilizes a multi-layered Al2O3 coating that provides an exceptional thermal barrier against crater wear at high cutting velocities. The PC (Positive Finishing) chipbreaker is characterized by its sharp cutting edge and wide chip-curling zone, which significantly reduces cutting resistance and prevents "stringing" in soft steels. With a robust 0.8mm corner radius, this insert ensures high dimensional accuracy and edge integrity during continuous, high-speed turning of automotive and industrial components.
Core Advantages
The TT8125 substrate is optimized for thermal stability, allowing for significantly higher surface speeds (Vc) than standard grades.
Sharp positive rake reduces built-up edge (BUE), resulting in superior surface Ra and extended tool life.
Advanced thick-film coating technology resists the high heat of high-carbon and alloy steel machining.
Technical Specifications
ISO Model Decoding: TCMT 16T308 PC
Triangle
7° Relief
Tolerance
W/ Hole
16.5mm L
3.97mm T
0.8mm RE
| Standard | Designation | I.C. Size | Thickness |
|---|---|---|---|
| Metric | TCMT 16T308 PC | 9.52 mm | 3.97 mm |
| Imperial | TCMT 3(2.5)2 PC | 0.375" | 0.156" |
Recommended Cutting Parameters (TT8125)
| Steel Category | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Unalloyed Steel | 220 - 450 | 0.10 - 0.25 |
| Alloy Steel (4140/4340) | 180 - 320 | 0.10 - 0.20 |
Compatible Tooling
Browse TCMT 16 Compatible Holders →Applications & Compatibility
- Precision Turning: Designed specifically for high-speed finish passes in steel.
- Target Materials: Carbon Steel, Alloy Steel, Cast Steel, and Mold Steel (ISO P).
- Typical Components: Gears, spindles, pins, and automotive transmission parts.
- Holder Match: Fits all standard S-TCMCR/L Boring Bars and STFCR/L Turning Holders.
TaeguTec Grade Comparison
| Grade | Type | ISO Scope | Performance Feature |
|---|---|---|---|
| TT8125 | CVD | P | Ultra High Speed & Wear Resistance |
| TT9225 | CVD | P | Universal Steel Grade / Toughness |
| TT9080 | PVD | M / S | Stainless & Superalloy Specialist |
Why Choose Us
Authentic TaeguTec CNC tooling backed by industrial technical support. We focus on maximizing your productivity and reducing the total cost per part with world-class carbide grades.
"TT8125 is perfect for our high-volume production. We pushed the speed to 300 m/min and the finish is flawless."
— Robert K., USA"Exzellente Standzeit bei legiertem Stahl. Der PC-Spanbrecher funktioniert hervorragend."
— Dieter W., Germany"Genuine TaeguTec quality. Excellent chip control on mild steel finishing."
— Hiroshi T., Japan"Ottima resistenza all'usura su acciai bonificati. Molto soddisfatto."
— Marco G., Italy"The best finishing insert we have tested this year. Stable and sharp."
— James L., UKFrequently Asked Questions
A: No. TT8125 is a high-hardness grade optimized for wear resistance in continuous cuts. For heavy interruptions, choose the TT9225 or TT9080 grade.
A: The PC geometry is a finishing specialist. We recommend a depth of cut (Ap) between 0.2mm and 1.5mm.
A: While it can cut some series of stainless, it is not optimized for it. For Stainless (ISO M), PVD grades like TT9080 are far superior.
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.