Kennametal 2229659 Turning Insert CNMG432MS KC5025 Carbide

Product Description

The KENNAMETAL 2229659 is a solid carbide turning insert with ANSI designation CNMG432MS and ISO designation CNMG120408, coated with TiAlN via a PVD process. It carries the KC5025 manufacturer grade, which delivers moderate wear resistance and toughness across steel, stainless steel, cast iron, and aluminum workpiece materials. The insert features an 80-degree diamond (rhombic) shape, a 0.5-inch inscribed circle, a 1/32-inch corner radius, and a negative rake and relief angle geometry. It is designed for the KENLOC clamping system and is installed by machinists and tooling technicians in turning, facing, and boring operations on CNC lathes and machining centers.

This insert is suited for roughing and medium machining applications. Its MS chip breaker geometry is optimized for stainless steel and superalloys and titanium as the primary workpiece materials, though the KC5025 grade also supports steel, cast iron, and non-ferrous materials. With four cutting edges per insert and a neutral hand orientation, it offers versatile positioning in standard CNMG-compatible toolholders. Typical applications include external turning, shoulder facing, and internal boring passes where consistent chip control is needed across variable depths of cut up to 1.25 mm (0.0492 inch).

Key Features

• KC5025 grade with TiAlN PVD coating for moderate wear resistance and toughness across steel, stainless, cast iron, and non-ferrous materials
• 80-degree diamond insert shape (CNMG) with negative rake and negative side clearance for stable, rigid cutting
• MS chip breaker geometry optimized for roughing and medium machining of stainless steel and superalloys
• Four available cutting edges per insert for extended tooling economy
• Neutral hand orientation compatible with standard CNMG-style left- or right-hand toolholders
• Honed cutting edge style for improved edge stability and reduced micro-chipping
• Multi-use capability across turning, facing, and boring operations

Compatibility

Designed for use in KENLOC-series toolholders and other CNMG432-compatible clamp-and-pin style insert holders that accept a 0.5-inch inscribed circle, 3/16-inch thick, 80-degree diamond insert with a center hole diameter of 0.2031 inch.

Installation Notes

Installation is performed by qualified machinists or tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Seat the insert fully against the toolholder pocket and verify clamp and pin engagement before resuming cuts. Do not use damaged or chipped cutting edges, and follow the toolholder manufacturer torque guidance for the clamping screw.