Kennametal 4050462 CNMG543MS KCU25 Carbide Turning Insert

Product Description

The KENNAMETAL 4050462 is a solid carbide turning insert in the CNMG543MS geometry, grade KCU25, with a Physical Vapor Deposition (PVD) AlTiN coating. It features an 80-degree diamond shape, negative rake angle of 13 degrees, and a honed cutting edge for consistent performance under demanding cutting conditions. The insert measures 16.12 mm (0.6346 inches) in length with a 5/8-inch inscribed circle and a 3/64-inch (0.0469 inches) corner radius. With four cutting edges and compatibility with clamp and pin holding methods, it is well suited for production turning environments where tool life and edge integrity are critical. Installation is performed by machinists and CNC turning specialists.

This insert is designed for use in turning, facing, and boring operations. Its primary workpiece materials are steel, stainless steel, superalloys, and titanium, covering ISO material codes P, M, and S. The MS chip breaker geometry is engineered for medium cutting conditions across these material groups. It is classified under industry standard designations CNMG543MS (ANSI) and CNMG160612MS (ISO), making it straightforward to cross-reference in standard tooling systems. The KENLOC series designation indicates compatibility with KENLOC-style toolholders that accept CNMG insert geometry with clamp and pin retention.

Key Features

• KCU25 carbide grade with PVD AlTiN coating for extended tool life in steel and high-temp alloy cutting
• 80-degree diamond insert shape (CNMG) with negative rake for strength and stability
• MS chip breaker geometry optimized for turning steel, stainless steel, superalloys, and titanium
• Four usable cutting edges per insert for cost efficiency
• Honed cutting edge style reduces microchipping at the edge line
• Dual standard compliance: ANSI (CNMG543MS) and ISO (CNMG160612MS)
• Multi-use application: turning, facing, and boring from a single insert geometry

Compatibility

Designed for use in KENLOC-series toolholders accepting CNMG insert geometry with clamp and pin holding. Compatible with standard CNMG543 pocket configurations per ANSI and ISO toolholder specifications. Suitable for CNC turning centers and manual lathes equipped with appropriate insert retention hardware.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine before seating or replacing inserts. Use the correct torque wrench and clamp hardware specified for the KENLOC toolholder to secure the insert without overtightening. Inspect the insert pocket for wear or debris before each insert change to ensure proper seating and edge alignment.