Mitsubishi CNMG120404-SH NX2525 Cermet Finishing Insert (10pcs)
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CNMG120404-SH NX2525
High-Gloss Finishing | NX2525 Cermet Technology | SH Stability Geometry
Precision Engineering for Superior Aesthetics
NX2525 Grade (Ultra-Micro Cermet): NX2525 is an uncoated TiCN-based cermet grade. It provides a unique combination of high wear resistance and toughness. Unlike traditional carbide, cermet maintains a chemically inert edge at high speeds, which prevents the workpiece material from welding to the tip. This results in the high-gloss "mirror" finish required in automotive and precision instrument components.
SH Chipbreaker (The Versatile Finisher): The SH geometry is the standard choice for finishing. It features a slightly stronger edge than the FH series, allowing it to handle minor interruptions and fluctuating depths of cut while maintaining excellent chip evacuation and low cutting resistance.
0.4mm (1/64") Precision Radius: The 04 radius is optimized to reduce radial cutting forces. This is critical for preventing chatter on long, slender parts and achieving tight dimensional tolerances on final passes.
Metric vs. Imperial Comparison
| System | Model Designation | I.C. (Inscribed Circle) | Thickness | Radius (RE) |
|---|---|---|---|---|
| Metric | CNMG120404-SH | 12.7 mm | 4.76 mm | 0.40 mm |
| Imperial | CNMG431-SH | 1/2" | 3/16" | 0.0157" (1/64") |
Finishing Cutting Parameters
*Cermet performs best at high speeds. Lower speeds may cause edge chipping. Use light depths of cut for best Ra values.
| Workpiece Material | Speed (Vc) | Feed (fn) | Depth (Ap) |
|---|---|---|---|
| Mild Steel / Carbon Steel | 200 - 450 m/min | 0.05 - 0.20 mm/r | 0.20 - 1.50 mm |
| Alloy Steel / Tool Steel | 150 - 300 m/min | 0.05 - 0.15 mm/r | 0.20 - 1.20 mm |
Compatible Tool Holders
Maximum rigidity ensures the best cermet performance. Use DCLNR/L 12 series holders:
Shop DCLNR 12 HoldersPro-Tip: NX2525 vs. AP25N
NX2525 (High Precision): Use this uncoated grade for the absolute best surface gloss and when machining soft/sticky steels that prone to sticking.
AP25N (High Production): Switch to AP25N (Coated Cermet) if you need higher wear resistance for longer production runs or slightly more toughness for semi-finishing.
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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.