Sumitomo 19HWAPR Turning Insert VNMG331ESU AC520U Carbide

Product Description

The SUMITOMO 19HWAPR is a solid carbide coated turning insert carrying the ANSI designation VNMG331ESU and ISO designation VNMG160404N-SU. It features a 35-degree diamond shape (V) with a neutral hand orientation and a negative rake geometry. The AC520U grade is applied via a PVD coating process, making it well-suited for demanding cutting applications. With a 3/8-inch inscribed circle and a 0.0156-inch (1/64 inch) corner radius, this insert is sized for precision turning operations. It measures 0.6535 inches in length and 3/16 inches in thickness. Licensed machinists and CNC lathe operators install this insert type in standard tool holders compatible with VNMG-style clamping systems.

This insert is designed for turning operations on difficult-to-machine materials, with secondary workpiece material designations of M and S covering stainless steel, superalloys, and titanium. The ESU chip breaker geometry supports controlled chip evacuation in these demanding applications. It fits into clamp-and-pin style tool holders with a 0.1500-inch hole diameter and is appropriate for both production and job-shop environments running CNC or manual lathes requiring tight tolerance VNMG tooling.

Key Features

• AC520U grade PVD-coated solid carbide construction for high-performance turning
• VNMG331ESU ANSI code with ISO equivalent VNMG160404N-SU for global tooling compatibility
• 35-degree diamond insert shape (V) with negative rake and neutral hand
• ESU chip breaker geometry optimized for stainless steel, superalloys, and titanium
• Clamp and pin holding method with 0.1500-inch hole diameter
• Tolerance code M and clearance code N per ANSI and ISO 13399 standards

Compatibility

Designed for use in VNMG-style clamp-and-pin tool holders accepting a 3/8-inch inscribed circle insert. Rated for secondary workpiece materials including stainless steel, superalloys, and titanium (material codes M and S).

Installation Notes

Installation is performed by machinists or CNC tooling technicians. Always power down and lock out the machine before changing inserts. Seat the insert fully against the tool holder pocket and verify the clamp and pin are secure before resuming operation. Do not exceed the tool holder manufacturer's specified feed and speed ranges for this insert geometry.