Sumitomo 19PWBPT Turning Insert TCMT32.51ESU AC630M Carbide

Product Description

The SUMITOMO 19PWBPT is a TCMT-style triangular turning insert designed for precision external turning operations on CNC and manual lathes. It features a 60-degree included angle, a manufacturer grade of AC630M, and an Al2O3 (aluminum oxide) CVD coating that provides thermal resistance and wear protection during continuous and interrupted cuts. The ESU chip breaker geometry and positive rake angle of 8 degrees promote free-cutting action and efficient chip evacuation. This insert is held in place via screw clamping and is intended for professional machinists and tool-and-die shops running medium to finishing passes.

This insert is suited for turning applications on stainless steel workpieces, as indicated by the secondary workpiece material code M. The ESU chip breaker geometry is optimized for controlled chip formation at moderate feed rates and depths of cut typical in finishing and semi-finishing operations. The neutral hand orientation allows use in standard TCMT toolholders. The ISO equivalent code is TCMT16T304N-SU, useful when cross-referencing international toolholder systems or ordering from ISO-coded catalogs. Professional machinists handling stainless steel components in aerospace, medical, or general manufacturing environments will find this insert applicable to their operations.

Key Features

• AC630M grade with CVD Al2O3 coating for wear resistance and thermal stability on stainless steel
• ESU chip breaker geometry for controlled chip evacuation during semi-finishing and finishing cuts
• 60-degree triangular insert shape (TCMT style) with positive rake for reduced cutting forces
• Screw-clamp insert holding method for secure, repeatable seating in TCMT toolholders
• Neutral hand orientation for use in standard right- and left-hand toolholder configurations
• Conforms to ANSI and ISO 13399 standards for interoperability and tool data exchange

Compatibility

Designed for use in TCMT-style screw-clamp toolholders. ISO equivalent designation is TCMT16T304N-SU. Compatible with toolholders accepting a 3/8-inch inscribed circle triangular insert with a 7-degree relief angle (clearance code C, tolerance code M). Intended primary application is stainless steel (ISO material group M).

Installation Notes

Installation should be performed by a qualified machinist. Power down and lock out the machine spindle before changing inserts. Use the correct torque screwdriver for the insert clamping screw to ensure proper seating without damaging the insert or pocket. Inspect the toolholder pocket and seating surfaces for chips or wear before inserting; a damaged pocket will cause premature insert failure and dimensional inaccuracy.