Sumitomo 19RJ302 Turning Insert VNMG432ENZ AC820P Carbide

Product Description

The SUMITOMO 19RJ302 is a VNMG-style solid carbide turning insert designed for precision metal cutting on CNC lathes and turning centers. Coated with aluminum oxide (Al2O3) via a CVD process and classified under manufacturer grade AC820P, this insert delivers thermal resistance and wear durability across demanding cutting conditions. The 35-degree diamond shape (Insert Shape Code V) provides a strong, efficient cutting geometry. With a neutral hand orientation, it suits a broad range of toolholder setups. Licensed machinists and CNC operators working in production turning environments will find this insert sized and graded for consistent performance on steel and stainless workpieces.

This insert is intended for turning applications in both production and job-shop environments. Primary workpiece materials are ISO material groups M (stainless steel) and P (steel), with steel as the secondary workpiece material. The ENZ chip breaker geometry manages chip flow during medium to finishing passes. The ANSI code VNMG432ENZ and ISO code VNMG220408N-UZ identify this insert within standard toolholder systems. It is sold individually but must be ordered in multiples of 10 to meet the minimum order quantity requirement.

Key Features

• Solid carbide substrate with CVD Al2O3 coating for thermal and abrasion resistance
• AC820P manufacturer grade rated for material grades C5A, C6, C7, and C8
• 35-degree diamond insert shape (Shape Code V) with neutral hand orientation
• ENZ chip breaker geometry suited for medium to finishing turning passes
• Positive rake angle (4 degrees) reduces cutting forces on steel and stainless workpieces
• Compliant with ANSI and ISO 13399 standards for interchangeable insert identification

Compatibility

Designed to fit VNMG-style toolholders accepting a 1/2-inch inscribed circle insert with clamp and pin holding method. ANSI code VNMG432ENZ and ISO code VNMG220408N-UZ identify compatible toolholder pockets across standard turning systems. Verify toolholder pocket geometry and clamp style before installation.

Installation Notes

Installation is performed by qualified CNC machinists or tooling technicians. Power down and lock out the machine spindle before seating or replacing the insert. Secure the insert using the appropriate clamp and pin hardware specified for the VNMG toolholder; do not overtighten the clamp screw beyond toolholder manufacturer specifications. Inspect the insert seat and pocket for debris or damage before placing the new insert to ensure correct seating and runout.