Sumitomo 19RJBPW Carbide Turning Insert VBMT332ESU AC820P

Product Description

The SUMITOMO 19RJBPW is a VBMT-style solid carbide turning insert with an AC820P manufacturer grade and an aluminum oxide (Al2O3) CVD coating. Designed for metal-cutting lathe operations, this insert features a 35-degree diamond shape, a 3/8-inch inscribed circle, and a 1/32-inch corner radius. The positive rake geometry and ESU chip breaker promote efficient chip evacuation and reduced cutting forces during turning. The screw-holding method provides secure seating in compatible toolholders. Machinists and CNC operators working in production turning environments will find this insert suited for consistent, repeatable performance on steel and similar workpiece materials.

This insert is intended for turning applications on steel and secondary steel-category workpiece materials. The ESU chip breaker geometry is optimized for finishing and semi-finishing passes where controlled chip flow and surface finish are priorities. It is appropriate for use in CNC turning centers and manual lathes equipped with VBMT-compatible toolholders. The neutral hand designation makes it adaptable to a range of toolholder orientations. Typical users include CNC machinists, toolroom operators, and production turning technicians.

Key Features

• AC820P grade with CVD-applied Al2O3 coating for wear resistance on steel
• ESU chip breaker geometry for controlled chip flow in finishing and semi-finishing cuts
• 35-degree diamond insert shape (V) with positive rake angle of 8 degrees
• 3/8-inch inscribed circle with 1/32-inch corner radius for precise edge geometry
• Screw-held mounting (clearance code B, tolerance code M) for rigid, repeatable seating
• Compliant with ANSI and ISO 13399 standards; ISO code VBMT160408N-SU

Compatibility

Designed for use in VBMT-compatible screw-on toolholders. ANSI code VBMT332ESU and ISO code VBMT160408N-SU can be used to cross-reference compatible toolholder designations from major toolholder manufacturers.

Installation Notes

Installation should be performed by a qualified machinist or CNC technician. Ensure the machine spindle is fully stopped and the machine is in a safe, locked-out state before changing inserts. Use the correct torx or hex key as specified by the toolholder manufacturer when tightening the clamping screw — do not overtighten. Inspect the insert pocket and seating surface for chips or debris before seating the insert to maintain proper edge geometry and runout.