Mitsubishi DCMT070202 NX2525 Cermet Turning Insert for Steel Finish (10pcs)
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DCMT070202 NX2525
High-Speed Cermet | Mirror Finish Grade | Micro-Precision Radius
Cermet Technology for Reflective Surfaces
NX2525 Grade (Advanced Cermet): Mitsubishi's NX2525 is a micro-grain Cermet grade that excels in finishing applications. Unlike carbide, Cermet has high resistance to oxidation and wear at high temperatures. It prevents the formation of "Built-up Edge" (BUE), ensuring that the finished workpiece remains glossy and dimensionally accurate over long production runs.
DCMT Geometry (Positive 55° Diamond): The 55-degree diamond shape provides excellent clearance and versatility. As a positive rake insert, it reduces the force required to peel away chips, which significantly lowers heat generation and protects the integrity of the workpiece surface.
0.2mm Micro-Radius: The "02" radius is designed for the lightest finishing passes. It minimizes radial cutting pressure, preventing vibration (chatter) in small-diameter parts or thin-walled components.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | DCMT070202 | 6.35 mm | 2.38 mm | 0.20 mm |
| Imperial | DCMT21.50.5 | 1/4" | 3/32" | 0.0078" |
High-Speed Finishing Parameters
*Cermet must be run at high speeds to prevent micro-chipping. Avoid interrupted cuts.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Carbon/Alloy Steel | 180 - 450 m/min | 0.03 - 0.12 mm/r | 0.10 - 1.00 mm |
| Soft Steel / Lead Steel | 200 - 500 m/min | 0.05 - 0.15 mm/r | 0.10 - 0.80 mm |
Compatible Tooling
Works seamlessly with all SDJCR/L or SDUCR/L 07-series holders:
Shop 07 Series Tool HoldersCermet Tip: NX2525 vs. Carbide VP15TF
NX2525 (Cermet): Your first choice for a "shiny" mirror finish. Best for continuous cuts at high speeds. It is more brittle than carbide, so avoid heavy interruptions.
VP15TF (PVD Carbide): Choose this for toughness. Better for interrupted cuts, gummy stainless steels, or when your machine cannot reach the high RPMs required for Cermet.
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