Sumitomo 19P7APL Turning Insert DNMG432ESU AC8025P Carbide

Product Description

The SUMITOMO 19P7APL is a solid carbide CVD-coated turning insert in the DNMG432ESU geometry, manufactured to ANSI and ISO 13399 standards. It carries the AC8025P manufacturer grade and features a 55-degree diamond shape with a neutral hand orientation and negative rake angle. The insert measures 0.6102 inches in length with a 0.5-inch inscribed circle and a 0.0313-inch corner radius. The ESU chip breaker geometry is optimized for steel turning applications. Licensed machinists and CNC lathe operators install this insert into compatible toolholders for precision turning on production and job-shop equipment.

This insert is intended for primary use on steel workpieces, consistent with its P-grade designation. The DNMG style with clamp and pin holding method suits negative-rake external turning toolholders in both roughing and finishing passes depending on feed and depth selection. The ESU chip breaker promotes reliable chip control across a range of steel alloys. This insert is suited to both CNC turning centers and manual engine lathes operating at appropriate surface speeds for carbide tooling.

Key Features

• AC8025P grade solid carbide substrate with CVD coating for wear resistance on steel
• DNMG432ESU ANSI geometry with ISO equivalent DNMG150408N-SU for cross-reference
• 55-degree diamond insert shape (code D) provides two usable cutting edges per insert
• ESU chip breaker designed for controlled chip formation during steel turning
• Neutral hand orientation compatible with standard DNMG-style toolholders
• Clamp and pin holding method for secure seating under interrupted and continuous cuts

Compatibility

Designed as an OEM-style replacement for DNMG432 turning inserts used in negative-rake external turning toolholders accepting the DNMG insert style with clamp and pin retention.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Ensure the machine spindle is fully stopped and locked out before indexing or replacing inserts. Seat the insert firmly against the toolholder pocket faces and tighten the clamp fastener to the toolholder manufacturer's specified torque to prevent insert movement during cutting. Inspect the insert pocket and seating surfaces for chips or debris before installation to ensure proper insert contact and edge registration.