Taegutec TCMT16T308MT TT8115 Carbide Insert for CNC Turning (10pcs)
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TaeguTec TCMT16T308MT TT8115
High-Velocity Steel Turning: Extreme Wear Resistance and Enhanced Edge Strength
Product Overview
"Max out your RPMs without sacrificing tool life—the TT8115 grade is engineered to stay sharp where other coatings soften."
The TaeguTec TCMT16T308MT TT8115 is a premium 16mm triangular turning insert optimized for high-productivity Steel (ISO P) turning. This specific configuration bridges the gap between high-speed finishing and medium-duty roughing. By utilizing the TT8115 PVD grade—TaeguTec’s hardest PVD coating for steels—this insert delivers exceptional resistance to abrasive wear and cratering. The 0.8mm corner radius provides the mechanical strength necessary for higher feed rates and interrupted cuts, while the MT (Medium Turning) chipbreaker ensures stable chip control and reduced cutting pressure during high-velocity operations.
Core Advantages
A specialized PVD layer that maintains a high hot-hardness, preventing edge rounding during continuous high-speed runs.
Reinforced corner radius that handles higher mechanical loads, making it ideal for large diameter workpieces and forging skins.
The positive rake face allows for smooth shearing action, extending spindle life and reducing heat transfer to the part.
Technical Specifications
ISO Designation Decoding: TCMT 16T308 MT
Triangle
7° Relief
Tol. Class M
W/ Hole
16.5mm L
3.97mm T
0.8mm RE
| Standard | Model | Side Length (L) | Thickness (S) |
|---|---|---|---|
| Metric | TCMT 16T308 MT | 16.50 mm | 3.97 mm |
| Imperial | TCMT 32.52 MT | 0.650" | 0.156" |
Recommended Cutting Parameters (TT8115)
| Material Group | Vc (m/min) | fn (mm/rev) |
|---|---|---|
| Carbon Steel (P) | 220 - 450 | 0.15 - 0.45 |
| Alloy Steel / Tool Steel | 150 - 300 | 0.12 - 0.40 |
Compatible Tooling Systems
This insert is precision-matched for TCMT 16 size external tool holders and heavy-duty boring bars.
Industrial Applications
- High-speed turning of large automotive axles and driveshafts.
- Finishing and medium roughing of heavy-duty steel pipe fittings.
- Machining of alloy steel forgings requiring long continuous cuts.
- High-output production of steel components in automated CNC environments.
Grade Optimization Guide
Selected here. Ideal for stable setups, high speeds, and maximum surface finish longevity in Steel.
The better choice for setups with vibration, significant interruptions, or low-stability workholding.
Frequently Asked Questions
1. When should I choose the TT8115 over the TT8125?
Choose the TT8115 when your machine setup is rigid and you want to increase cutting speeds (Vc). It is much more resistant to heat-induced wear, making it superior for long continuous cuts in carbon and alloy steels.
2. How does the 0.8mm radius affect the finish compared to 0.4mm?
The 0.8mm radius (this insert) provides a stronger cutting edge and can actually produce a better surface finish at higher feed rates (fn). However, it requires more machine rigidity to prevent chatter compared to the 0.4mm version.
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.