Sumitomo 19RJAPS Turning Insert VNMG332 AC820P Carbide

Product Description

The SUMITOMO 19RJAPS is a VNMG332 geometry turning insert in grade AC820P, designed for precision metal cutting on CNC lathes and turning centers. The insert features a 35-degree diamond (rhombic) shape with a neutral hand orientation and a CVD coating applied over a solid carbide substrate. It carries a 3/8-inch inscribed circle, a 3/16-inch thickness, and a 1/32-inch corner radius. The ESU chip breaker geometry targets finishing and light machining operations, making this insert well-suited for machinists running tight-tolerance passes on steel and cast iron workpieces.

This insert is intended for turning applications on steel (ISO P) and cast iron (ISO K) workpiece materials, particularly where high wear resistance is the primary concern and moderate toughness is acceptable. The negative rake, negative side clearance geometry is standard for clamp-and-pin toolholders used in production turning environments. It fits the VN series toolholder family and is appropriate for job shops and production floors running finish-turning cycles that demand consistent surface finish and dimensional accuracy.

Key Features

• AC820P grade with CVD coating delivers high wear resistance on steel and cast iron
• ESU chip breaker optimized for finishing and light machining cuts
• 35-degree diamond (V) insert shape enables high-clearance profiling and contour turning
• Negative rake and negative side clearance (Clearance Code N) for rigid, stable cutting action
• Compatible with both clamp and pin insert-holding methods
• Conforms to ANSI and ISO 13399 standards; ISO code VNMG160408N-SU

Compatibility

Designed for use in VNMG-style toolholders that accept a 332 ANSI size code insert with clamp or pin retention. Compatible with ISO size code 160408 toolholders. Suitable for material grades C5A, C6, C7, and C8 cutting applications.

Installation Notes

Installation is performed by a machinist or CNC tooling technician. Power down and lock out the machine spindle before indexing or replacing inserts. Ensure the insert seat and shim are clean and free of chips before seating the insert, as debris under the insert can cause premature edge failure or dimensional drift. Follow the toolholder manufacturer torque specification for the clamping screw; do not over-torque, as carbide inserts are brittle and can fracture under uneven clamping load.