Kennametal 7026678 SNMG433RN KCP25C Turning Insert

Product Description

The KENNAMETAL 7026678 is a SNMG433RN-style square carbide turning insert in the KCP25C grade, designed for medium to heavy turning operations in metalworking applications. It features a multilayer CVD coating of TiCN and Al2O3, delivering wear resistance and thermal stability under demanding cut conditions. The insert measures 0.5 inches in length and 0.5 inches inscribed circle diameter, with a corner radius of 3/64 inches (0.0469 inches) and a 3/16-inch thickness. The RN chip breaker geometry and chamfered-and-honed cutting edge are suited for continuous and interrupted cuts on steel and cast iron workpieces. This insert is installed by machinists and CNC turning professionals in production environments.

This insert is designed for use in turning, facing, and boring operations on a lathe or turning center. It targets primary workpiece materials including steel (ISO P) and cast iron (ISO K). With eight cutting edges per insert and a neutral hand orientation, it is a versatile tooling choice for general-purpose external and internal turning on both manual and CNC equipment. The KENLOC series designation indicates compatibility with KENLOC-style insert holders using clamp and pin holding methods. The square insert shape and 90-degree included angle make it well suited for profiling and shoulder work.

Key Features

• Multilayer CVD coating: TiCN plus Al2O3 for heat and wear resistance in steel and cast iron cuts
• 8 usable cutting edges per insert for extended tool life and cost efficiency
• RN chip breaker with chamfered and honed edge for controlled chip formation and edge security
• Neutral hand orientation supports use in both right-hand and left-hand toolholders
• Maximum depth of cut of 0.1665 inches suitable for medium stock removal
• Meets ANSI and ISO standards; ISO code SNMG120412RN for global toolholder cross-reference

Compatibility

Designed for use in KENLOC-series insert holders that accept SNMG-style square inserts with clamp and pin holding. Compatible with toolholders sized for a 0.5-inch inscribed circle insert with a 0.2031-inch hole diameter. Suitable for turning, facing, and boring of steel and cast iron. Conforms to ANSI and ISO standard insert geometry SNMG433RN / SNMG120412RN.

Installation Notes

Install and index this insert with the machine fully powered down and the spindle locked. Use the appropriate torque wrench and KENLOC clamp hardware specified for the holder to secure the insert without cracking the carbide substrate. Inspect the seating pocket and locating pin for chips or debris before seating the insert. Follow the toolholder manufacturer guidelines and applicable shop safety procedures when indexing or replacing cutting inserts.