Sumitomo 19RJ189 Turning Insert DNMG441EGU AC820P Carbide

Product Description

The SUMITOMO 19RJ189 is a solid carbide turning insert in the DNMG style, designed for precision external turning operations on CNC lathes and turning centers. Carrying the AC820P manufacturer grade, this insert features an aluminum oxide (Al2O3) coating applied via CVD process, which delivers high thermal resistance and wear performance during continuous and interrupted cuts in steel applications. The insert has a neutral hand orientation with a negative rake angle of 7 degrees. The EGU chip breaker geometry is engineered for reliable chip control and surface finish consistency across a range of cutting parameters.

This insert is suited for production turning in steel workpiece materials, corresponding to the ISO P secondary workpiece material designation. It is a standard pick for machinists running medium to finish turning passes where controlled chip formation and coating durability are priorities. The ANSI code is DNMG441EGU and the ISO 13399 code is DNMG150604N-GU, making cross-referencing straightforward in CAM and tool management systems. Toolrooms and job shops running steel components will find this insert fits standard DNMG toolholders with clamp and pin holding methods.

Key Features

• AC820P grade with Al2O3 CVD coating for heat and wear resistance in steel turning
• EGU chip breaker geometry for consistent chip control on medium to finish turning passes
• 55-degree diamond insert shape (Insert Shape Code D) for versatile profiling and turning access
• Neutral hand orientation compatible with right- and left-hand setups
• Clamp and pin holding method for secure seating in standard DNMG toolholders
• Compliant with ANSI and ISO 13399 standards for universal tool management compatibility

Compatibility

Designed for use in standard DNMG-style toolholders that accept clamp and pin holding. Compatible with steel workpiece materials per ISO P designation. ANSI code DNMG441EGU and ISO code DNMG150604N-GU confirm fitment in any toolholder specifying those standards.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician. Power down and lock out the machine before seating or replacing inserts. Ensure the toolholder pocket and clamping pin are clean and free of chips before installing the insert, as debris under the insert seat will affect runout and surface finish. Torque the clamp screw to the toolholder manufacturer specification — do not overtighten, as this can fracture the insert body.