Kennametal 6442481 Cutoff Insert KCU25 Solid Carbide 3mm

Product Description

The KENNAMETAL 6442481 is a solid carbide cutoff insert from the Beyond Evolution series, designed for parting and grooving operations on CNC lathes and turning centers. It carries the EC030M03PN00CF00 form designation and the KCU25 manufacturer grade, a PVD-coated substrate with an Al2O3 finish engineered for consistent edge life and chip control in interrupted and continuous cuts. The CF chipbreaker geometry promotes reliable chip evacuation in medium-duty cutoff work. With a 3 mm cutting width and a neutral lead angle, this insert suits machinists and toolroom technicians running standard parting applications on steel and similar workpiece materials.

This insert is applied in production turning environments where controlled chip flow and repeatable tool life are priorities. It fits size-3 insert seats and is suited for medium material removal rates in ferrous and non-ferrous turning. The Beyond Evolution series targets shops running demanding cutoff cycles where PVD-coated carbide grades outperform uncoated alternatives. It is sized for toolholders accepting EC-style inserts with a 3 mm seat width. Licensed machinists and CNC operators handling production lathe work are the primary installers and users.

Key Features

• KCU25 grade with PVD-applied Al2O3 coating for extended edge life in cutoff and grooving
• CF chipbreaker geometry supports controlled chip formation and evacuation
• 3 mm cutting width with neutral lead angle and 0-degree lead angle for straight parting cuts
• 2-degree relief angle provides clearance to reduce rubbing on the cut face
• Solid carbide construction throughout the cutting body for rigidity and dimensional stability
• EC insert style with size-3 seat designation for compatibility with standard EC-style toolholders

Compatibility

Designed for use in EC-style cutoff and grooving toolholders accepting a size-3 insert seat and a 3 mm cutting width, consistent with standard Beyond Evolution series toolholder specifications.

Installation Notes

Cutoff inserts are installed by qualified machinists or CNC toolroom technicians. Always index or replace inserts with the machine powered down and the spindle locked. Seat the insert fully against the pocket walls and clamp it to the toolholder manufacturer torque guidance before resuming cuts. Inspect the insert seat for chips or debris before seating a new insert to avoid seating errors that accelerate edge failure.