Kennametal 2425814 TPMT3251LF KC5025 Carbide Turning Insert

Product Description

The KENNAMETAL 2425814 is a solid carbide turning insert with ANSI designation TPMT3251LF and ISO designation TPMT16T304, coated with TiAlN via a PVD process. Carrying the KC5025 manufacturer grade, this insert is engineered for finishing and light machining operations. It features a 60-degree triangular shape, a positive rake angle of 5 degrees, an 11-degree relief angle, and a honed cutting edge. The inscribed circle measures 3/8 inches (0.3750 inches), the insert length is 0.6495 inches (16.50 mm), and the corner radius is 1/64 inches (0.0156 inches). Three usable cutting edges per insert help extend tooling value in production environments. Licensed machinists and CNC tooling technicians are the primary users.

This insert is suited for turning, facing, and boring applications on a broad range of workpiece materials. The KC5025 grade with TiAlN PVD coating delivers moderate wear resistance and toughness across steel (P), stainless steel (M), cast iron (K), aluminum and non-ferrous (N), and superalloys and titanium (S) material categories. The LF chip breaker geometry is optimized for finishing and light machining cuts, with a maximum depth of cut of 0.0492 inches (1.25 mm). This insert is appropriate for both CNC turning centers and manual lathes where screw-on insert holding is used.

Key Features

• TiAlN PVD coating provides thermal resistance and moderate wear protection across steel, stainless steel, cast iron, and non-ferrous materials
• LF chip breaker geometry optimized for finishing and light machining operations
• 60-degree triangular insert shape with 3 cutting edges for extended tooling use
• Positive rake and positive side clearance reduce cutting forces on workpiece and toolholder
• Screw-on insert holding method for secure, repeatable seating in compatible toolholders
• Conforms to ANSI and ISO standards (ANSI: TPMT3251, ISO: TPMT16T304)

Compatibility

Designed for use in screw-on style TPMT-compatible turning toolholders. Suitable for multi-use applications including turning, facing, and boring. Compatible toolholders must accept the TPMT insert style with a 0.1732-inch (4.40 mm) mounting hole diameter.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine before seating or replacing inserts. Use the manufacturer-specified torque wrench and clamping screw for the toolholder to avoid cracking the carbide body - do not overtighten by feel alone. Inspect the insert seat and screw threads for debris or damage before each insert change.