Sumitomo 19DYBES Turning Insert CNMG432ESX AC700G Carbide

Product Description

The SUMITOMO 19DYBES is a CNMG-style solid carbide turning insert finished with an Al2O3 CVD coating in manufacturer grade AC700G. It carries an 80-degree diamond shape (insert shape code C) with a neutral hand orientation and a positive rake angle of 3 degrees. The inscribed circle measures 0.5000 inches, insert length is 0.5079 inches, insert thickness is 0.1875 inches, and the corner radius is 0.0313 inches. Designed for single-point turning operations, this insert is installed by machinists and CNC turning technicians working with cast iron and steel workpieces where wear resistance and edge stability are the primary requirements.

This insert is suited for general turning applications on cast iron and steel in both production and job-shop environments. The ESX chip breaker geometry is matched to medium-depth finishing and semi-finishing passes where controlled chip flow and surface finish consistency matter. The CVD Al2O3 coating provides thermal resistance at elevated cutting speeds typical of steel and cast iron turning. It fits standard CNMG clamp-and-pin toolholders configured for the 432 insert size, making it a straightforward drop-in for existing setups already running CNMG tooling.

Key Features

• AC700G grade CVD Al2O3-coated solid carbide for wear resistance on steel and cast iron
• 80-degree diamond insert shape with ESX chip breaker geometry for semi-finishing and finishing cuts
• Neutral hand orientation — compatible with both left- and right-hand toolholder setups
• Positive rake angle (3 degrees) reduces cutting forces and heat generation
• Clamp and pin holding method for secure, repeatable insert indexing
• Conforms to ANSI code CNMG432ESX and ISO code CNMG120408N-SX per ANSI and ISO 13399 standards

Compatibility

Designed for use in standard CNMG clamp-and-pin toolholders accepting the 432 insert size. Primary workpiece materials are cast iron (ISO material code K) and steel (ISO material code P). Material grades C7 and C8 apply. Verify toolholder clearance and pocket geometry before installation.

Installation Notes

Installation is performed by a qualified machinist or CNC turning technician. Confirm the machine spindle is fully stopped and the toolholder is secured before seating or indexing the insert. Use the appropriate torque wrench and clamp screw per the toolholder manufacturer specifications — do not overtighten the clamp screw by hand estimation. Inspect the insert pocket and locating pin for wear or debris before installing a new insert to ensure proper seating and edge geometry.