Sumitomo 19HV178 Turning Insert WNMG432EEX AC510U Carbide

Product Description

The SUMITOMO 19HV178 is a solid carbide turning insert carrying the ANSI designation WNMG432EEX and ISO code WNMG080408N-EX. It is designed for single-point turning operations on CNC lathes and turning centers. The insert features a dual PVD coating of TiAlN and AlCrN under SUMITOMO's Super ZX proprietary coating designation, which provides heat and wear resistance at elevated cutting speeds. Key geometry details include an 80-degree trigon shape, a neutral hand orientation, a 0.0313-inch corner radius, and a positive rake angle of 16 degrees. This insert is specified for grade AC510U with the EEX chip breaker profile. Installation is handled by machinists and CNC operators in production and job-shop environments.

The 19HV178 is suited for turning applications where thermal stability and edge toughness are required, particularly in superalloy machining. The EEX chip breaker geometry supports controlled chip formation across a range of depths of cut and feed rates. It fits standard WNMG-style toolholders that accept a 0.5-inch inscribed circle insert with clamp and pin holding. Secondary workpiece material classification is superalloy (code S), making it appropriate for aerospace, energy, and high-temperature alloy components.

Key Features

• Dual PVD coating: TiAlN and AlCrN (Super ZX designation) for elevated heat and wear resistance
• 80-degree trigon insert shape (code W) with neutral hand orientation
• EEX chip breaker profile engineered for controlled chip formation in difficult materials
• Positive rake geometry at 16 degrees reduces cutting forces
• Solid carbide substrate grade AC510U optimized for superalloy turning
• Conforms to ANSI and ISO 13399 standards for toolholder compatibility

Compatibility

Designed as an OEM-style replacement turning insert for WNMG-style toolholders accepting a 0.5-inch inscribed circle with clamp and pin holding, conforming to ANSI and ISO 13399 standards.

Installation Notes

This insert is installed by machinists or CNC tooling technicians. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torque wrench and clamp hardware specified by the toolholder manufacturer — do not overtighten the clamp screw. Inspect the insert seat and chip pocket for debris before seating a new insert to ensure proper support and runout.