Sumitomo 19RBAFT Turning Insert WNMG432EMU AC830P Carbide

Product Description

The SUMITOMO 19RBAFT is a solid carbide coated turning insert in the WNMG432EMU geometry, engineered for precision metal cutting on CNC lathes and turning centers. It features an 80-degree trigon (W-shape) insert profile with a neutral hand orientation and a CVD-applied AC830P coating for enhanced wear resistance and thermal stability. The inscribed circle measures 0.5 inches with a corner radius of 0.0313 inches (1/32 inch) and an insert thickness of 0.1875 inches. This insert is designed for machinists and tooling technicians working in production turning environments where consistent tool life and predictable performance are required.

This insert is suited for turning operations on ISO material groups P (carbon and alloy steels) and M (stainless steels), as well as universal secondary workpiece materials. The EMU chip breaker geometry supports medium to universal cutting conditions. It is used in clamp-and-pin style toolholders compatible with WNMG-style seating. Typical applications include external turning, profiling, and facing on steel and stainless components in both job shop and production settings.

Key Features

• AC830P CVD-coated solid carbide grade for wear resistance in steel and stainless turning
• WNMG432EMU geometry: 80-degree trigon shape, neutral hand, EMU chip breaker
• Corner radius of 0.0313 inches (1/32 inch) for balanced edge strength and surface finish
• Inscribed circle of 0.5 inches with insert length of 0.3425 inches
• Negative rake, clearance code N, tolerance code M per ANSI and ISO 13399 standards
• Compatible with clamp and pin toolholder holding method

Compatibility

Designed for use in WNMG-style clamp-and-pin turning toolholders. Compatible with material grades C5, C5A, and C6 applications per industry classification. ANSI code WNMG432EMU; ISO code WNMG080408N-MU.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Before seating the insert, power down the machine and lock out the spindle per your facility lockout/tagout procedure. Ensure the toolholder pocket and clamping pin are clean and free of chips before seating the insert. Do not overtighten the clamping screw; follow the toolholder manufacturer torque guidance for the specific holder being used.