Mitsubishi TPGH080204L-FS NX2525 | Left-Hand Cermet Finish Insert
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TPGH080204L-FS NX2525
Mitsubishi Materials | Ultra-Finish Cermet for Precision Boring
The Mitsubishi TPGH080204L-FS NX2525 is a high-precision Left-Hand (L) cermet insert engineered for fine finishing and boring. Utilizing the titanium-based NX2525 grade, it provides exceptional chemical stability and resistance to built-up edge (BUE). The FS chipbreaker is the master of super-finishing, making this a vital long-tail precision tool for CNC machining of carbon and alloy steels where mirror-like surface quality is the priority.
High-Speed Cermet | 11° Positive Relief | FS Super-Finish Breaker
Technical Code Breakdown
Triangular Shape
11° Positive Relief
G-Tolerance
Hole/Chip Feature
8mm Edge Length
2.38mm Thick
0.4mm Radius
Left-Hand
Super Finish
Metric (ISO) vs Inch (ANSI) Reference
| Tech Details | ISO (Metric) | ANSI Equivalent |
|---|---|---|
| Part Number | TPGH080204L-FS | TPGH 1.51.51L FS |
| Inscribed Circle | 4.76 mm | 0.187" (3/16") |
| Corner Radius | 0.4 mm | 0.016" (1/64") |
NX2525 Cermet Grade
The NX2525 grade is Mitsubishi's premium titanium-cermet. It offers higher oxidation resistance than carbide, meaning the lathe turning edge stays sharp at high speeds without chemical reaction with the steel workpiece, ensuring a glossy finish.
FS Chipbreaker Logic
The FS chipbreaker is an ultra-fine geometry. It is designed to break chips at extremely shallow depths of cut, preventing surface damage from long, stringy swarf in high-speed finishing operations.
Recommended Cutting Parameters
| Workpiece Material | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Mild / Carbon Steel | 150 - 320 m/min | 0.05 - 0.15 mm/rev | 0.1 - 0.8 mm |
| Alloy Steel | 120 - 280 m/min | 0.05 - 0.12 mm/rev | 0.1 - 0.6 mm |
REQUIRED LEFT-HAND BORING BARS
Designed for use with Left-Hand tool holders or boring bars such as STFPL or STGPL series.
Shop Left-Hand Boring Bars →
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.