Kennametal 1868257 CPGM32505 KC5025 Carbide Turning Insert

Product Description

The KENNAMETAL 1868257 is a CPGM32505 solid carbide turning insert in the KC5025 grade, designed for precision metal-cutting operations on CNC and manual lathes. The insert features a TiAlN coating applied via PVD process, combining moderate wear resistance with toughness for reliable performance across a range of workpiece materials. The 80-degree diamond (rhombic) shape provides a strong cutting geometry, and the 0.0079 inch corner radius supports general-purpose turning, facing, and boring. With a screw-on holding method and positive rake angle of 5 degrees, this insert seats securely in compatible toolholders and delivers consistent cutting performance for production and job-shop environments.

This insert is suited for turning, facing, and boring operations in both residential shop and industrial production settings. Primary workpiece materials include stainless steel and superalloys and titanium, with the KC5025 grade also rated for steel, cast iron, and aluminum and non-ferrous materials. The medium chip-breaker geometry handles moderate material removal rates. The neutral hand orientation makes it adaptable to a variety of toolholder configurations. Licensed machinists and CNC operators working in precision machining shops are the typical end users for this insert.

Key Features

• KC5025 grade with TiAlN PVD coating for moderate wear resistance and toughness across multiple material groups
• 80-degree diamond insert shape (CPGM) with positive rake and positive side clearance for clean chip formation
• Neutral hand orientation compatible with a wide range of screw-on toolholders
• Medium chip-breaker geometry suitable for turning, facing, and boring at moderate depths of cut
• Two cutting edges per insert for extended tool life and cost efficiency
• Honed cutting edge style reduces microchipping at the cutting edge during entry and exit

Compatibility

Designed as an OEM-style replacement or direct-fit insert for screw-on toolholders accepting CPGM32505 geometry inserts per ANSI and ISO standards (ISO Insert Code: CPGM09T302). Compatible with toolholders specifying a 3/8 inch inscribed circle, CPGM insert style, and positive clearance geometry.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and de-energize the machine spindle before indexing or replacing inserts. Use the manufacturer-specified torque wrench and insert screw to seat the insert correctly in the pocket — do not overtighten by hand. Inspect the insert pocket and seating surface for wear or debris before installing a new insert to ensure proper seating and cutting-edge alignment.