Sumitomo 19T4APG Carbide Turning Insert WNMG432ESU AC8015P

Product Description

The SUMITOMO 19T4APG is a WNMG-style solid carbide turning insert designed for precision metal removal on steel workpieces. It carries the AC8015P grade with Absotech Platinum CVD coating, a proprietary finish engineered to extend tool life and resist wear in continuous and interrupted steel cuts. The insert features an 80-degree trigon shape, a 1/2 inch inscribed circle, a 3/16 inch thickness, and a 1/32 inch corner radius. With a negative rake angle of 13 degrees and neutral cutting direction, it suits a wide range of right-hand and left-hand toolholders. Machinists and CNC operators working in production turning environments install this insert to maximize performance on P-class steel materials.

This insert is built for steel turning applications, including general-purpose and production CNC lathe work on low-alloy and carbon steels. It falls within material grades P10 and P20, making it appropriate for medium-to-finishing passes where controlled chip formation and surface finish consistency are priorities. The ESU chip breaker geometry promotes reliable chip evacuation during steel turning. It is held in place via pin and screw insert-holding methods, fitting standard WNMG toolholders commonly used in shop turning operations.

Key Features

• AC8015P grade with Absotech Platinum CVD coating for extended wear resistance on steel
• 80-degree trigon insert shape (ANSI code WNMG432ESU, ISO code WNMG080408N-SU) for versatile toolholder compatibility
• ESU chip breaker geometry designed for controlled chip formation during steel turning
• Negative rake angle with neutral cutting direction supports both right-hand and left-hand toolholder setups
• 1/32 inch corner radius suitable for medium-finish to finishing pass applications
• Pin and screw holding method for secure, repeatable seating in standard WNMG pockets

Compatibility

Designed as an OEM-style replacement for standard WNMG432 toolholder pockets accepting pin and screw insert retention; compatible with toolholders conforming to ANSI and ISO 13399 standards for WNMG-style inserts.

Installation Notes

Installation is performed by qualified CNC machinists or manual lathe operators. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder manufacturer's specified procedure without over-torquing. Handle carbide inserts with care to avoid chipping cutting edges during installation.