Kennametal 2979216 Cutoff Insert KC5025 Carbide

Product Description

The KENNAMETAL 2979216 is a carbide cutoff insert engineered for parting and grooving operations on CNC lathes and turning centers. Manufactured in the A4 series with an A4C insert style, this insert features a 2.5 mm (0.0984 inch) cutting width and a TiAlN PVD coating applied over a KC5025 carbide grade substrate. The KC5025 grade delivers a balance of wear resistance and toughness suited to steel and cast iron applications. A neutral lead angle and 2-degree relief angle contribute to stable chip formation and consistent tool life across moderate cutting conditions. The CF chipbreaker geometry supports controlled chip evacuation during cut-off cycles.

This insert is intended for cut-off and deep grooving applications on bar-fed or chucked workpieces in production turning environments. Typical installation scenarios include automatic screw machine shops, job shops running multi-shift turning operations, and any facility requiring consistent parting performance on ferrous materials. The clamp-style insert holding method provides secure seating in compatible A4-series toolholders. The insert seat size is 2B, which determines toolholder compatibility.

Key Features

• A4C insert style with 2B seat size for use in A4-series clamp-style toolholders
• 2.5 mm (0.0984 inch) cutting width with neutral lead angle for straight parting cuts
• KC5025 carbide grade with TiAlN PVD coating for wear resistance on ferrous workpieces
• CF chipbreaker geometry promotes positive chip control during cut-off operations
• 2-degree relief angle and 0.0079 inch corner radius support edge stability and surface finish
• Overall insert length of 0.7886 inch (20.03 mm); cutting height of 0.1610 inch (4.09 mm)

Compatibility

Designed for use in A4-series clamp-style cutoff and grooving toolholders accepting a 2B insert seat size. Refer to KENNAMETAL toolholder documentation to confirm seat size and clamping method compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or toolroom technician with the machine in a full lockout/tagout state before any insert change. Seat the insert fully into the toolholder pocket and verify the clamp engages correctly before powering the machine. Inspect the insert seat for chips or debris that could prevent proper seating and cause premature edge failure. Follow the toolholder manufacturer's clamping torque guidance and applicable shop safety procedures when setting cutting parameters.