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.
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