Kennametal 7026401 CNMG432MN KCP25C Carbide Turning Insert

Product Description

The KENNAMETAL 7026401 is a CNMG432MN carbide turning insert with KCP25C grade and a multilayer CVD coating of TiN, Al2O3, and TiCN. The diamond-shaped (80-degree included angle) insert carries a negative rake geometry and a chamfered and honed cutting edge. It measures 12.9 mm (0.5077 inches) in length with a 0.5-inch inscribed circle and a 1/32-inch (0.0313-inch) corner radius. With four available cutting edges and a 3/16-inch thickness, it delivers efficient material removal in both roughing and finishing passes. Licensed machinists, CNC operators, and tool-and-die professionals install this insert as part of the KENLOC series tooling system.

This insert is rated for turning, facing, and boring operations on steel and cast iron workpieces, corresponding to ISO material codes P and K. It is suited for both general-purpose production turning and applications requiring consistent surface finish across multiple cutting edges. The MN chip breaker geometry is designed to manage chip flow during medium-duty cuts on ferrous materials. A maximum depth of cut of 0.1691 inches supports a range of material removal strategies common in job shop and production floor environments.

Key Features

• KCP25C grade with multilayer CVD coating: TiN outer layer, Al2O3 mid-layer, TiCN base layer for wear and thermal resistance
• Diamond insert shape with 80-degree included angle for versatile toolpath options
• Four cutting edges for extended tool life per insert
• MN chip breaker geometry optimized for steel and cast iron at medium depths of cut
• Compatible with clamp and pin holding methods for secure seating in KENLOC toolholders
• Meets ANSI and ISO standards; ISO designation CNMG120408MN

Compatibility

Designed for use in KENLOC series toolholders that accept CNMG-style inserts with clamp or pin retention. Rated for primary workpiece materials steel (ISO code P) and cast iron (ISO code K). Multi-use application includes turning, facing, and boring.

Installation Notes

Installation is performed by machinists or CNC technicians following standard indexable insert procedures. The machine spindle must be fully stopped and the toolholder secured in the turret before seating or indexing the insert. Use the appropriate torque wrench and clamping hardware specified by the toolholder manufacturer — do not overtighten the clamp screw, as this can chip the insert or damage the seat. Inspect the insert pocket and locating pin for chips or debris before seating a new cutting edge.