Sumitomo 19RJ339 Turning Insert DNMG432EGU AC820P Carbide

Product Description

The SUMITOMO 19RJ339 is a DNMG432EGU-style indexable turning insert engineered for precision metal cutting on CNC lathes and turning centers. It is manufactured from solid carbide and finished with an Al2O3 (aluminum oxide) CVD coating in the AC820P grade, a combination suited for continuous and semi-interrupted cuts in steel applications. The insert features a 55-degree diamond shape, a negative rake angle of 7 degrees, and an EGU chip breaker geometry. The inscribed circle measures 0.5 inches, with an insert length of 0.6102 inches and a corner radius of 0.0313 inches. Licensed machinists and CNC operators install this insert as a direct indexable tooling component in compatible turning toolholders.

This insert is intended for use in turning operations where the primary workpiece material is steel, as indicated by the secondary workpiece material code P. The DNMG style and neutral hand orientation make it adaptable to both left- and right-hand toolholder setups. The EGU chip breaker is designed to manage chip control across a range of depths of cut and feed rates typical in production turning. It conforms to ANSI code DNMG432EGU and ISO code DNMG150408N-GU, making it suitable for integration into ISO 13399-compliant tooling management systems. This insert is sold individually; the minimum order quantity is 10 units per purchase.

Key Features

• AC820P grade solid carbide substrate with CVD-applied Al2O3 coating for wear resistance in steel cutting
• EGU chip breaker geometry for controlled chip evacuation in continuous and semi-interrupted turning
• 55-degree diamond insert shape (shape code D) with negative rake for stable cutting forces
• Neutral hand orientation compatible with both left- and right-hand DNMG toolholders
• Dual holding method support: clamp and pin retention for secure seating under load
• Compliant with ANSI and ISO 13399 standards for tooling data interoperability

Compatibility

Designed for use in DNMG-style indexable turning toolholders that accept a 0.5-inch inscribed circle, 3/16-inch thick diamond insert with a clamp or pin holding method. Conforms to ANSI code DNMG432EGU and ISO code DNMG150408N-GU. Verify toolholder pocket dimensions and retention method before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque wrench and manufacturer-specified fastener hardware when seating the clamp or pin to avoid insert fracture or toolholder damage. Inspect the pocket seat and contact surfaces for debris or wear before installing a new insert.