Kennametal 2425807 Turning Insert TCMT3252LF KC5025

Product Description

The KENNAMETAL 2425807 is a TCMT3252LF-geometry solid carbide turning insert finished with a PVD TiAlN coating and assigned grade KC5025. The insert features a 60-degree triangle shape (TCMT style) with a neutral hand orientation, a positive rake angle of 5 degrees, and a 7-degree relief angle. The LF chip breaker geometry is engineered for finishing and light machining operations. With 3 usable cutting edges and a screw-on holding method, this insert suits high-volume turning applications where consistent surface finish and edge predictability matter. Licensed ANSI code TCMT3252 and ISO code TCMT16T308 make cross-referencing straightforward for tool crib management.

This insert is primarily targeted at turning, facing, and boring operations on stainless steel, superalloys, and titanium, with additional suitability across steel, cast iron, aluminum, and other non-ferrous materials. The KC5025 grade delivers moderate wear resistance balanced with toughness, making it well suited to interrupted cuts and variable-condition machining common in job shop and production environments. The positive side clearance and honed cutting edge style help reduce built-up edge and extend tool life on gummy or work-hardening materials. CNC lathe operators and manual turners running light finishing passes will find this geometry consistent and predictable.

Key Features

• KC5025 grade with PVD TiAlN coating for moderate wear resistance and toughness across multiple workpiece materials
• LF chip breaker geometry optimized for finishing and light machining cuts
• 60-degree triangle insert shape with 3 usable cutting edges for cost-effective indexing
• Positive rake angle (5 degrees) and honed cutting edge reduce cutting forces and built-up edge
• Screw-on insert holding method for secure, repeatable seating in compatible toolholders
• Compliant with both ANSI and ISO insert standards for broad toolholder compatibility

Compatibility

Designed for use in TCMT-style screw-on toolholders accepting a 3/8-inch inscribed circle, 60-degree triangle insert with ANSI size code 3252 and ISO size code 16T308. Suitable for turning, facing, and boring applications on stainless steel, superalloys, titanium, steel, cast iron, and aluminum or non-ferrous materials.

Installation Notes

Installation is performed by machinists or CNC setup technicians following standard insert indexing procedures. Power down and lock out the machine spindle before indexing or replacing inserts. Use the correct torx or hex key specified by the toolholder manufacturer to tighten the clamping screw - do not overtighten, as this can fracture the insert. Inspect the insert seat and clamp pocket for chips or debris before seating a new insert to ensure proper contact and runout.