Kennametal 7026656 DNMG433RP KCP25C Carbide Turning Insert

Product Description

The KENNAMETAL 7026656 is a DNMG433RP KCP25C grade carbide turning insert designed for precision material removal on CNC lathes and turning centers. It features a CVD-applied multilayer coating of TiCN and Al2O3 that provides wear resistance and thermal stability during continuous and interrupted cuts. The diamond-shaped insert body carries a 55-degree included angle, a negative rake geometry, and a chamfered and honed cutting edge style. With four usable cutting edges and a 3/64-inch corner radius, this insert delivers consistent performance across roughing and finishing passes on steel and cast iron workpieces. Licensed HVAC and metalworking shops running KENLOC-style toolholders will find this insert a direct fit.

This insert is suited for turning, facing, boring, back turning, and back boring operations in production and job-shop environments. It targets steel and cast iron as primary workpiece materials, making it appropriate for general machining of shafts, flanges, housings, and similar components. The RP chip breaker geometry manages chip evacuation at a range of feed rates, helping maintain process control in both light and medium-depth cuts. Machinists and CNC operators in industrial and trade settings install this insert as part of standard tooling maintenance cycles.

Key Features

• CVD multilayer TiCN and Al2O3 coating for thermal and abrasion resistance
• Diamond insert shape with 55-degree included angle and negative rake for stable cutting forces
• RP chip breaker geometry supports turning, facing, boring, back turning, and back boring
• Four cutting edges per insert extend tooling value across production runs
• Chamfered and honed cutting edge reduces micro-chipping on entry and exit
• Compatible with both clamp and pin insert holding methods

Compatibility

Designed as an OEM-style replacement insert for KENLOC-series toolholders accepting DNMG-style diamond inserts with a 1/2-inch inscribed circle. Industry standard number DNMG433RP and ISO code DNMG150412RP confirm fitment against standard toolholder catalogs. Meets ANSI and ISO insert standards.

Installation Notes

Insert seating and clamping should be performed with the machine fully powered down and the spindle locked. Use the appropriate torque wrench and KENLOC clamp hardware to secure the insert without over-tightening the clamp screw. Inspect the pocket seat for chips or debris before seating a new insert, as contamination can cause insert rocking and premature edge failure. This work is typically performed by a CNC machinist or toolroom technician following the toolholder manufacturer's seating procedure.