Sumitomo 19HWCGW Turning Insert VNMG331EEF AC520U Carbide

Product Description

The SUMITOMO 19HWCGW is a solid carbide turning insert designed for precision metal cutting in CNC lathe and turning center applications. Manufactured to ANSI designation VNMG331EEF and ISO code VNMG160404N-EF, this insert features a 35-degree diamond shape with a neutral hand orientation and a 0 degree rake angle. It is PVD-coated with a proprietary dual-layer TiAlN and AlCrN coating marketed under the Super ZX designation, grade AC520U, which is engineered for wear resistance and thermal stability at the cutting edge. The EEF chip breaker geometry is suited to finishing and semi-finishing operations. Licensed machinists, CNC operators, and toolroom technicians install this insert in standard tool holders that accept the VNMG form factor.

This insert is intended for turning applications on stainless steel and superalloy workpiece materials, corresponding to material codes M and S. It is appropriate for finish to semi-finish turning passes where controlled chip formation and edge sharpness are critical. The neutral hand designation allows use in both left-hand and right-hand tool holders. It fits within the VN series and is held in the holder via clamp or pin method, making it compatible with standard VNMG-style insert pockets used in production and job-shop turning environments.

Key Features

• ANSI code VNMG331EEF and ISO 13399-compliant designation VNMG160404N-EF
• Solid carbide substrate with PVD-applied TiAlN and AlCrN dual-layer coating (Super ZX), grade AC520U
• 35-degree diamond insert shape with 0 degree relief angle (clearance code N) and neutral rake
• EEF chip breaker geometry for finishing and semi-finishing cuts on stainless steel and superalloys
• Corner radius of 0.0156 inches (1/64 inch) for fine-edge finishing work
• Insert holding via clamp or pin for secure seating in VNMG tool holders

Compatibility

Designed as a replacement-style turning insert for VNMG-form tool holders within the VN series that accept clamp or pin holding methods and are configured for 35-degree diamond inserts. Compatible workpiece materials include stainless steel and superalloys per material codes M and S.

Installation Notes

This insert is installed and indexed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torque wrench and manufacturer-specified clamping hardware for the tool holder to ensure proper seating. Handle carbide inserts carefully to avoid chipping the cutting edge prior to installation.