Kennametal 1866997 CPGT2151HP KC5025 Turning Insert

Product Description

The KENNAMETAL 1866997 is a solid carbide turning insert in the CPGT2151HP geometry with KC5025 grade, featuring a PVD-applied TiAlN coating for extended tool life in demanding cutting applications. The insert measures 6.45 mm (0.2539 inches) in length with a 1/4 inch inscribed circle and a 1/64 inch corner radius. It carries an 80-degree diamond (rhombic) shape with a positive rake angle of 15 degrees and an 11-degree relief angle. The HP chip breaker is optimized for finishing operations. Honed cutting edges and positive side clearance make this insert well-suited for light, precise cuts on difficult workpiece materials. It is installed by machinists and CNC tooling technicians in screw-on toolholders.

The 1866997 is designed for turning, facing, and boring operations on stainless steel, superalloys, and titanium as its primary workpiece materials, with additional suitability for steel, cast iron, and aluminum and non-ferrous materials. The KC5025 grade is characterized by moderate wear resistance and toughness across material categories P, M, K, N, and S. The neutral hand orientation supports use in standard right-hand and left-hand toolholders without restriction, making it a versatile insert for multi-material production environments and repair shops alike.

Key Features

• KC5025 grade with PVD TiAlN coating for moderate wear resistance and toughness across steel, stainless, cast iron, aluminum, and superalloy materials
• 80-degree diamond (CPGT) shape with HP chip breaker geometry optimized for finishing cuts
• Positive 15-degree rake angle and 11-degree relief angle reduce cutting forces on difficult materials
• Honed cutting edge style for consistent performance on stainless steel and superalloys
• Screw-on holding method with 2 cutting edges per insert
• Meets ANSI and ISO standards; ANSI code CPGT2151, ISO code CPGT060204

Compatibility

Designed for use in screw-on CPGT-style toolholders accepting a 1/4 inch inscribed circle insert with ANSI size code 2151 and ISO size code 060204. Suitable for turning, facing, and boring applications across compatible CNC and manual lathe tooling systems.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Before changing inserts, power down the machine and lock out the spindle per applicable safety procedures. Seat the insert fully against the pocket locating surfaces before tightening the clamping screw to avoid seating errors that can cause edge chipping. Verify toolholder compatibility with the CPGT screw-on pocket style prior to installation.