Kennametal 2425843 Turning Insert DCMT2151LF KC5025

Product Description

The KENNAMETAL 2425843 is a solid carbide turning insert with ANSI designation DCMT2151LF and ISO designation DCMT070204, finished with a PVD-applied TiAlN coating and manufactured to the KC5025 grade. The insert features a 55-degree diamond (rhombic) shape, a 0.25-inch inscribed circle, and a 1/64-inch (0.0156-inch) corner radius, making it well-suited for finishing and light machining operations. The neutral hand orientation and positive rake angle allow it to be used across turning, facing, boring, back turning, and back boring applications. Licensed machinists and CNC operators install this screw-on insert in compatible toolholders for precision metalcutting work.

This insert is designed primarily for stainless steel and superalloys, with grade characteristics that deliver moderate wear resistance and toughness across steel (P), stainless steel (M), cast iron (K), and aluminum and non-ferrous (N) material groups. The LF chip breaker geometry targets light chip loads and fine surface finishes. The maximum depth of cut is 1.25 mm (0.0492 inches), confirming its role in finish-pass and semi-finish applications rather than aggressive roughing. It is sold individually with a minimum order quantity of 5 units.

Key Features

• KC5025 grade with PVD TiAlN coating for moderate wear resistance and toughness across P, M, K, and N material groups
• 55-degree diamond (DCMT) shape with positive rake and positive side clearance for reduced cutting forces
• LF chip breaker optimized for finishing and light machining operations
• Screw-on holding method with a 0.1142-inch (2.80 mm) hole diameter for secure toolholder engagement
• Two cutting edges per insert; honed cutting edge style for consistent performance on stainless steel and superalloys
• Meets ANSI and ISO insert standards (DCMT2151 / DCMT070204)

Compatibility

Designed for use in screw-on DCMT-style toolholders accepting a 0.25-inch inscribed circle insert with a 7-degree relief angle. Verify toolholder pocket dimensions and clamping screw compatibility before installation.

Installation Notes

Installation is performed by qualified machinists or CNC tooling technicians. Power down and lock out the machine spindle before indexing or replacing inserts. Use the appropriate torque wrench and manufacturer-specified clamping screw when seating the insert to avoid cracking the carbide substrate. Inspect the insert pocket and seating surface for chips or debris before each insert installation.