Mitsubishi CNMG120404-FH NX2525 Cermet Finishing Insert (10pcs)
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CNMG120404-FH NX2525
Mirror Finish Specialist | NX2525 Micro-Grain Cermet | FH Precision Geometry
The Pinnacle of Surface Integrity
NX2525 Grade (Uncoated Cermet): The NX2525 is a high-performance cermet (ceramic-metal composite) grade. Unlike coated carbides, this uncoated cermet maintains a much sharper cutting edge for a longer duration. Its high resistance to Built-up Edge (BUE) and superior chemical stability at high temperatures ensure that your workpiece achieves a brilliant, glossy finish without the dulling effect of traditional carbide.
FH Chipbreaker (Fine Finish Power): The FH geometry is a "sharp-edge" design. It is optimized for light depths of cut where chip control is usually difficult. The FH breaker curls the chip tightly even at feed rates as low as 0.05mm, preventing "stringers" from scratching your finished surface.
0.4mm (1/64") Precision Radius: The small 04 radius minimizes cutting resistance and tool pressure. This is essential for preventing vibration on small-diameter parts and achieving tight tolerances on final finishing passes.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-FH | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-FH | 1/2" | 3/16" | 0.0157" (1/64") |
Precision Finishing Parameters
*NX2525 requires stable setups. Higher speeds yield better gloss. Avoid heavy interruptions or heavy depths of cut.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Low/Medium Carbon Steel | 180 - 450 m/min | 0.04 - 0.18 mm/r | 0.10 - 0.80 mm |
| Alloy Steel (Hardened) | 120 - 300 m/min | 0.04 - 0.15 mm/r | 0.10 - 0.60 mm |
Compatible Tool Holders
For high-gloss finishing, use DCLNR/L 12 series holders with high clamping rigidity:
Shop DCLNR 12 HoldersPro-Tip: Cermet NX2525 vs. AP25N
NX2525 (High Precision): The uncoated cermet choice for maximum surface gloss and dimensional precision. Perfect for high-speed continuous finishing.
AP25N (Coated Cermet): Choose AP25N when you need slightly more wear resistance at higher speeds or for light semi-finishing tasks where the tool life of uncoated cermet might be limited.
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This Mitsubishi insert is in stock. 24-hour quote response. ISO 9001 certified. Ships from Hangzhou in 3–7 days.
Technical FAQ & Buying Guide
When choosing CNC cutting tools, check the full model code, dimensions, grade and selected variant before ordering. Do not rely on the product image alone.
For carbide inserts, tool holders, drills and end mills, compare the mounting dimensions, connection type and manufacturer's specifications with your holder or machine. If you are unsure, share your existing part number and machining application with us before ordering.
Check the product listing for the selling unit, pack quantity and included components. If it is unclear whether the price is per piece or per pack, or whether a tool body and inserts are sold separately, contact us before purchasing.
Select cutting speed, feed rate and depth of cut using the relevant manufacturer's recommendations for your tool model, workpiece material, machine conditions and coolant method. The same settings are not suitable for every product or application.
Our automatic quantity discount is 6% off for 2–9 items and 12% off for 10 or more items, based on the total product quantity in the cart. Other offers may not combine with this discount; check the applicable offer conditions.
According to our shipping policy, orders are typically processed and shipped within 1–3 business days after confirmation. Delivery generally takes 5–20 business days, depending on your destination and shipping method. Customs clearance or unforeseen delays may affect delivery times. A tracking number is sent by email after shipment.