Sumitomo 19P7BYJ Turning Insert WNMG433EGE AC8025P Carbide

Product Description

The SUMITOMO 19P7BYJ is a WNMG433EGE-style solid carbide turning insert with an AC8025P CVD coating, designed for negative-rake external turning operations on steel workpieces. The insert conforms to an 80-degree trigon (W) shape with a neutral hand orientation, making it suitable for general-purpose turning where consistent chip control and edge integrity are critical. At 0.3425 inches in length with a 0.5 inch inscribed circle and a 3/64-inch (0.0469 inch) corner radius, it fits standard WNMG toolholders. The EGE chip breaker geometry helps manage chip flow across a range of depths of cut and feed rates. This insert is installed by machinists and CNC operators in production turning environments.

This insert is intended for turning steel workpieces in CNC lathe and manual turning applications. The AC8025P grade with CVD coating provides wear resistance suited to medium-duty cutting conditions in ferrous materials. The WNMG form factor is widely used in external turning, facing, and light profiling operations. The ISO code WNMG080412N-GE confirms compatibility with standard WNMG insert pockets. This insert is sold individually but carries a minimum order quantity of 10 units per order.

Key Features

• AC8025P CVD-coated carbide grade optimized for steel turning (ISO P workpiece material code)
• EGE chip breaker geometry for controlled chip flow during turning and facing
• 80-degree trigon insert shape (W) with negative rake and neutral hand orientation
• 0.5 inch inscribed circle with 3/64-inch corner radius for general-purpose turning profiles
• Clamp and pin holding method for secure seating in WNMG-style toolholders
• Compliant with ANSI and ISO 13399 insert standards

Compatibility

Designed for use in WNMG-style insert pockets with clamp and pin holding. ISO code WNMG080412N-GE confirms fitment in toolholders dimensioned for the WNMG 433 insert size. Insert size code 433 and a 0.2031-inch hole diameter apply when selecting compatible toolholder bodies.

Installation Notes

Installation is performed by qualified machinists or CNC setup technicians. The machine spindle must be stopped and locked out before indexing or replacing inserts. Use the appropriate torque wrench for the clamp screw to avoid cracking the carbide or distorting the pocket seating surface. Inspect the insert pocket for chips, debris, or wear before seating the new insert, as pocket condition directly affects edge runout and tool life.