Mitsubishi TPGX090204L NX2525 | Left-Hand Cermet Finishing Insert
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TPGX090204L NX2525
Mitsubishi Materials | High-Speed Steel Finishing Cermet (Left-Hand)
Superior Surface Finish Technology
The Mitsubishi TPGX090204L NX2525 is an ultra-precision Left-Hand (L) Cermet turning insert. As a G-class tolerance ground insert, it offers significantly higher dimensional accuracy than standard pressed inserts. The NX2525 Cermet grade is specifically engineered to resist chemical wear and oxidation at high cutting speeds, making it the premier choice for precision CNC boring and finishing of carbon and alloy steels where a mirror surface finish is required.
High-Speed NX2525 Cermet | 11° Positive Relief | Ground Finishing Edge
Technical Code Identification
Triangular Shape
11° Positive Relief
G-Class Tolerance
Special Geometry
9mm Edge Length
2.38mm Thick
0.4mm Radius
Left-Hand
ISO (Metric) vs ANSI (Inch) Comparison
| Technical Spec | ISO Model (Metric) | ANSI Model (Inch) |
|---|---|---|
| Part Number | TPGX090204L | TPGX 21.51L |
| Inscribed Circle (IC) | 5.56 mm | 0.219" (7/32") |
| Corner Radius | 0.4 mm | 0.016" (1/64") |
NX2525 Cermet Performance
The NX2525 grade is a non-coated Cermet substrate. Because Cermet has a low affinity for metal-to-metal bonding, it effectively eliminates built-up edge (BUE) in steel. This long-tail precision insert is ideal for maintaining tight tolerances over long finishing passes, ensuring the dimensions stay consistent from the first part to the last.
Precision Ground Edge
As a "G" tolerance insert, the periphery is ground to sub-micron accuracy. In boring bar applications, this precision prevents "chatter" and ensures that the tool pressure is distributed evenly, resulting in a cleaner shear and better surface integrity.
Recommended Cutting Parameters
| Workpiece Material | Speed ($v_c$) | Feed ($f$) | DOC ($a_p$) |
|---|---|---|---|
| Low Carbon Steel | 150 - 350 m/min | 0.05 - 0.15 mm/rev | 0.1 - 0.8 mm |
| Alloy Steel | 120 - 300 m/min | 0.05 - 0.12 mm/rev | 0.1 - 0.6 mm |
COMPATIBLE LEFT-HAND HOLDERS
Designed for Left-Hand (L) tool paths. Pairs with S-STFPL or S-STGPL style boring bars.
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