Sumitomo 19P7339 Turning Insert DNMG432EGU AC8025P Carbide

Product Description

The SUMITOMO 19P7339 is a solid carbide indexable turning insert designed for precision metal cutting on CNC lathes and turning centers. It carries the ANSI designation DNMG432EGU and ISO code DNMG150408N-GU, placing it in the DN series. The insert features a 55-degree diamond shape with a neutral hand orientation and a negative rake geometry. The AC8025P grade uses a CVD coating process, making it well suited for steel workpieces where edge durability and controlled chip formation are required. The EGU chip breaker geometry supports consistent chip evacuation across a range of depths of cut and feed rates. This insert is installed by machinists and CNC tooling technicians in production and job-shop environments.

The 19P7339 is intended for turning operations on steel workpieces, classified under primary workpiece material code P. It is used in external and internal turning applications where a 55-degree diamond insert with a clamp-and-pin holding method is appropriate. The 0.0313-inch corner radius suits finishing and semi-finishing passes. The 0.5-inch inscribed circle and 3/16-inch insert thickness are standard for medium-sized toolholders accepting DNMG-style inserts. Typical applications include shaft turning, facing, and contour work on carbon and alloy steels in both small-batch and high-volume production settings.

Key Features

• AC8025P CVD-coated solid carbide grade engineered for steel cutting applications
• 55-degree diamond insert shape (ANSI code D) with neutral hand orientation and negative rake
• EGU chip breaker geometry supports controlled chip formation during finishing and semi-finishing
• 0.0313-inch corner radius for semi-finish to finish turning passes
• Clamp and pin holding method compatible with standard DNMG toolholders
• Meets ANSI and ISO 13399 standards for consistent tooling system integration

Compatibility

Designed as a direct-fit replacement for DNMG432EGU-style indexable insert seats. Compatible with toolholders designed to accept DNMG series inserts using clamp-and-pin retention. Verify toolholder pocket specifications against the 0.5-inch inscribed circle and 3/16-inch insert thickness before installation.

Installation Notes

This insert is installed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer when securing the clamp-and-pin assembly. Inspect the toolholder pocket for wear or debris before seating a new insert to ensure proper contact and edge alignment.