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The ACCUPRO 75392431 is a TCMT-style carbide turning insert designed for precision external turning operations on CNC and manual lathes. It carries ANSI code TCMT1.81.51 and ISO code TCMT090204, identifying its triangular shape, 7-degree relief angle, and 0.0157-inch corner radius. The insert is manufactured in grade ACP25M with a CVD coating, making it well suited for high wear-resistance applications across steel, stainless steel, and cast iron workpieces. With three usable cutting edges and a neutral hand orientation, this insert is a workhorse choice for production turning environments. Licensed machinists and CNC operators install and index this insert on the shop floor.
This insert is applicable to general-purpose external turning on steel (P), stainless steel (M), and cast iron (K) workpiece materials. The WM+ chip breaker geometry is optimized for moderate to heavy chip control across those material groups. With a maximum depth of cut of 0.1181 inches and a screw-style insert holding method, it fits standard TCMT-compatible tool holders used in both job shop and production environments. It is sold individually but carries a minimum order quantity of 10 units.
Designed as an OEM-style replacement insert for standard TCMT-compatible turning tool holders accepting ANSI code TCMT1.81.51 or ISO code TCMT090204 inserts.
Installation is performed by machinists or CNC operators on a powered-down machine with the spindle locked and all motion axes confirmed stationary. Use the appropriate Torx or hex key to seat the clamping screw to the tool holder manufacturer's specified method without over-torquing the insert pocket. Inspect the insert pocket and seating surface for chips or debris before indexing to a fresh cutting edge. Follow all applicable shop safety protocols and machine tool manufacturer guidelines when indexing or replacing inserts.
We pulled together the parts most installs need for this unit, plus a few add-ons worth a look. Check what you need — nothing here blocks checkout.
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