Kennametal 2979112 Cutoff Insert KC5025 Carbide 1.99mm

Product Description

The KENNAMETAL 2979112 is a carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. It carries the style designation A4C0205R06CF02 and is manufactured in grade KC5025 with a PVD-applied TiAlN coating for wear resistance in interrupted and continuous cut-off applications. The insert delivers a cutting width of 1.99 mm (0.0783 inches) with a right-hand lead angle of 6 degrees and a relief angle of 2 degrees. The CF chipbreaker geometry promotes chip control in medium to finish turning conditions. Overall length is 20.03 mm (0.7886 inches) with a cutting height of 4.09 mm (0.1610 inches).

This insert is suited for production turning environments where consistent chip evacuation and tool life are priorities. It installs into Series A4 toolholders using a clamp holding method and is appropriate for cut-off operations on a range of workpiece materials classified under material grades C2 and C6. The right-hand lead angle configuration is standard for most conventional turning setups. Machinists and CNC programmers working in job shop or production floor environments are the primary users of this insert style.

Key Features

• KC5025 carbide grade with PVD TiAlN coating for extended wear resistance
• 1.99 mm (0.0783 inch) cutting width for precise parting operations
• CF chipbreaker geometry for reliable chip control in medium to finish cuts
• Right-hand lead angle of 6 degrees reduces cutting forces at entry
• Relief angle of 2 degrees supports edge strength during cut-off
• Clamp-style holding method for secure seating in A4 series toolholders

Compatibility

Designed for use with Series A4 toolholders that accept insert seat size 2 and clamp-style holding. Specific holder compatibility should be verified against KENNAMETAL A4 series toolholder documentation before installation.

Installation Notes

This insert is installed and replaced by a qualified machinist or CNC tooling technician. Power down and lock out the machine before any insert change. Inspect the insert seat and clamp for wear or debris before seating the insert, as a contaminated pocket can cause premature edge failure or insert fracture. Corner radius is 0.0079 inches; confirm this matches the part drawing tolerance before running production.