Mitsubishi RCMX1204MO NX2525 Cermet Turning Insert | Genuine MMC
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RCMX1204MO NX2525
Mitsubishi Materials | Large-Scale Cermet Profiling Specialist
The Mitsubishi RCMX1204MO NX2525 is a robust 12mm round cermet turning insert designed for high-efficiency finishing and copy turning. By utilizing NX2525 cermet technology, this insert bridges the gap between traditional carbide and ceramics, offering extreme resistance to oxidation and adhesion. It is the premier indexable turning choice for machining steel when a mirror-like surface finish and long-term dimensional stability are the primary requirements.
Technical Specifications
| ISO Designation | RCMX1204MO |
|---|---|
| ANSI Designation | RCMX 43 MO |
| Grade Category | NX2525 (Titanium Carbonitride Cermet) |
| Inscribed Circle ($IC$) | 12.0 mm (0.472") |
| Thickness ($S$) | 4.76 mm (0.187") |
NX2525 High-Gloss Grade
The NX2525 grade is a specialized cermet (ceramic-metal composite) that excels in high-speed finishing. It maintains a sharp cutting edge longer than carbide because it does not react chemically with the steel workpiece. This prevents built-up edge (BUE) and allows for consistent CNC turning results across long production runs.
MO Profiling Chipbreaker
The MO chipbreaker is a medium-duty geometry that provides a reinforced edge for profiling and copy milling applications. On a round (R) insert, the MO design ensures smooth chip flow even as the lead angle varies with the depth of cut, reducing cutting resistance and preventing vibration on larger workpieces.
Recommended Cutting Parameters
Optimized for Steel Finishing (P05 - P25)
| Workpiece Material | Cutting Speed ($v_c$) | Feed per Rev ($f$) |
|---|---|---|
| Low Carbon Steel (S15C) | 150 - 450 m/min | 0.10 - 0.35 mm/rev |
| Alloy Steel (SCM440) | 120 - 350 m/min | 0.08 - 0.25 mm/rev |
| Grey Cast Iron | 150 - 300 m/min | 0.15 - 0.40 mm/rev |
SRDC / SRGC HOLDER SYSTEM
The RCMX1204MO is compatible with Mitsubishi SRDC turning tool holders for heavy-duty finishing.
Shop Tool Holders →Metric vs. Inch Cross-Reference
| Feature | Metric Designation | Inch Designation (Approx.) |
|---|---|---|
| Diameter | 12 (12.0 mm) | 4 (4/8" or 0.472") |
| Thickness | 04 (4.76 mm) | 3 (3/16" or 0.187") |
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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.