Kennametal 1866955 CCGT21505HP KC5025 Carbide Turning Insert

Product Description

The KENNAMETAL 1866955 is a solid carbide turning insert designed for precision metal removal in finishing operations. It carries the ANSI insert designation CCGT21505HP and the ISO equivalent CCGT060202, with manufacturer grade KC5025 and a PVD-applied TiAlN coating. The insert features an 80-degree diamond (rhombic) shape, a positive rake angle of 15 degrees, and a honed cutting edge style. With a 0.25-inch inscribed circle and a corner radius of 0.0079 inches, it is built for light, accurate finishing cuts. Licensed machinists and CNC lathe operators install this insert in screw-on toolholders for turning, facing, and boring applications.

This insert is suited for finishing passes on stainless steel, superalloys, titanium, steel, cast iron, aluminum, and other non-ferrous materials. The KC5025 grade provides moderate wear resistance and toughness across material categories P, M, K, N, and S per ISO classification. Typical applications include light-depth finishing cuts on precision turned components in job shops, aerospace machining cells, and general metalworking environments where tight tolerances and surface finish are priorities. The HP chip breaker geometry supports chip control at finishing parameters.

Key Features

• ANSI code CCGT21505HP with ISO equivalent CCGT060202 for toolholder compatibility verification
• KC5025 grade with PVD TiAlN coating for wear resistance on stainless steel and superalloys
• 80-degree diamond insert shape with positive rake and positive side clearance for reduced cutting forces
• HP chip breaker optimized for finishing operations and effective chip evacuation
• Screw-on holding method with a 0.1102-inch hole diameter for secure clamping
• Neutral hand orientation and multi-use design supports turning, facing, and boring on a single insert

Compatibility

Designed for use in screw-on style toolholders accepting CCGT-style inserts with a 0.25-inch inscribed circle. Conforms to ANSI and ISO insert standards for dimensional interchangeability with compliant toolholder systems.

Installation Notes

This insert is installed by a qualified machinist or CNC operator. Power down and lock out the machine before indexing or replacing inserts. Use the appropriate torx or hex key to secure the clamping screw to the toolholder manufacturer's specified procedure — do not overtighten, as carbide inserts are brittle. Inspect the insert seat and shim for damage before seating a new insert.