Mitsubishi TPGH090202L-FS NX2525 | Left-Hand Cermet Finish Insert
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TPGH090202L-FS NX2525
Mitsubishi Materials | Precision Mirror-Finish Cermet (Left-Hand)
The Mitsubishi TPGH090202L-FS NX2525 is an elite Left-Hand (L) cermet turning insert designed for ultra-fine finishing. Engineered with the titanium-based NX2525 Cermet grade, it offers exceptional resistance to chemical wear and oxidation. The FS chipbreaker is the industry benchmark for super-finishing, making this a critical long-tail precision tool for CNC machining of small-diameter bores in carbon and alloy steels where surface luster is non-negotiable.
High-Speed Cermet | 11° Positive Relief | FS Super-Finish Breaker
Technical Code Breakdown
Triangular Shape
11° Positive Relief
G-Tolerance
Hole/Chip Feature
9mm Edge Length
2.38mm Thick
0.2mm Radius
Left-Hand
Super Finish
Metric (ISO) vs Inch (ANSI) Reference
| Tech Details | ISO (Metric) | ANSI Equivalent |
|---|---|---|
| Part Number | TPGH090202L-FS | TPGH 21.50.5L FS |
| Inscribed Circle | 5.56 mm | 0.219" (7/32") |
| Nose Radius | 0.2 mm | 0.008" |
NX2525 Cermet Grade
The NX2525 Cermet is a specialized titanium-carbonitride composite. It maintains a sharp edge far longer than carbide in high-speed finishing. Its low affinity for steel prevents built-up edge (BUE), which is essential for maintaining dimensional accuracy and achieving a reflective mirror finish.
FS "Super-Finish" Breaker
The FS chipbreaker features an exceptionally sharp rake and high positive geometry. It is specifically designed to control chips at very light depths of cut, ensuring chip evacuation is clean and does not mar the workpiece surface during lathe turning.
Recommended Cutting Parameters
| Workpiece Material | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Mild / Carbon Steel | 150 - 320 m/min | 0.03 - 0.12 mm/rev | 0.05 - 0.5 mm |
| Alloy Steel (4140) | 120 - 280 m/min | 0.03 - 0.10 mm/rev | 0.05 - 0.4 mm |
REQUIRED LEFT-HAND HOLDERS
This Left-Hand (L) insert requires standard STFPL or STGPL Left-Hand tool holders and boring bars.
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.