Kennametal 4050460 Turning Insert CNMG542MS KCU25 Carbide

Product Description

The KENNAMETAL 4050460 is a CNMG542MS style solid carbide turning insert in the KCU25 grade, PVD-coated with AlTiN for wear resistance and heat performance. It features an 80-degree diamond shape with a neutral hand orientation, a 5/8-inch inscribed circle, and a 1/32-inch corner radius. Insert length is 16.12 mm (0.6346 inches) and insert thickness is 1/4 inch. With four cutting edges and a honed cutting edge style, this insert is suited for general turning, facing, and boring operations on ferrous and difficult-to-machine workpiece materials. It is part of the KENLOC series and conforms to both ANSI and ISO standards. Licensed machinists and CNC operators are the primary users.

This insert is designed for turning, facing, and boring operations across a range of workpiece materials including steel, stainless steel, superalloys, and titanium. The MS chip breaker geometry and negative rake angle make it well-suited for medium-duty cutting conditions. The maximum depth of cut is 0.2113 inches. It is held using a clamp and pin method, which is standard for CNMG-style inserts in indexable toolholders. The insert is multi-use rated for production environments where consistent chip control and edge life are priorities.

Key Features

• AlTiN PVD coating for elevated-temperature wear resistance in steel and superalloy cutting
• 80-degree diamond insert shape with neutral hand orientation for flexible toolholder pairing
• MS chip breaker geometry with negative rake angle for controlled chip formation in medium-duty applications
• Four usable cutting edges per insert for extended tooling value
• Honed cutting edge style for improved edge stability and reduced micro-chipping
• Conforms to ANSI and ISO standards with ISO code CNMG160608MS

Compatibility

Designed as an OEM-style replacement insert for CNMG-style indexable turning toolholders that accept a 5/8-inch inscribed circle insert with clamp and pin holding. Compatible with multi-use turning, facing, and boring applications on steel, stainless steel, superalloys, and titanium workpiece materials per KENLOC series toolholder specifications.

Installation Notes

Installation should be performed by a qualified machinist or CNC technician. Ensure the machine spindle is fully stopped and the toolholder is secured before indexing or replacing inserts. Use the appropriate torque wrench for the clamping screw to avoid seat damage or insert cracking. Inspect the insert pocket and seating surface for chips or debris before seating the new insert.