Kennametal 5941088 Cutoff Insert KCU25 Carbide 4mm

Product Description

The KENNAMETAL 5941088 is a carbide cutoff insert engineered for parting and grooving operations on CNC lathes and turning centers. It carries the EC-U insert style designation and belongs to the Beyond Evolution series, featuring an AlTiN coating applied via PVD process. The insert delivers a 4.00 mm cutting width with a neutral lead angle and a 2-degree relief angle, producing clean, controlled separation cuts on ferrous and non-ferrous workpieces. With a corner radius of 0.008 inches and a CM chipbreaker geometry, it manages chip flow effectively at typical parting depths. The manufacturer grade KCU25 is suited for a range of cutting conditions where edge toughness and wear resistance are both priorities.

This insert is intended for single-end use in right-hand toolholder seats sized for a 4 mm insert seat. It is appropriate for production turning environments in both job-shop and high-volume manufacturing settings where consistent parting performance and dimensional repeatability are required. The CM chipbreaker geometry is particularly effective in applications with moderate feed rates and where chip curl and evacuation from the cut zone must be controlled to prevent workpiece damage or tool interference.

Key Features

• 4.00 mm cutting width for precise parting and grooving operations
• AlTiN coating via PVD process for improved heat and wear resistance
• CM chipbreaker geometry for controlled chip formation at moderate feeds
• Neutral lead angle with 2-degree relief angle reduces side forces during cutoff
• KCU25 grade spans C2 and C6 material grades for broad workpiece material compatibility
• Beyond Evolution series EC-U insert style for use in compatible toolholders

Compatibility

Designed for use in right-hand toolholders accepting a 4 mm EC-U style insert seat. Refer to the Beyond Evolution series toolholder documentation to confirm seat and clamping compatibility before installation.

Installation Notes

Carbide cutoff inserts must be seated and clamped according to the toolholder manufacturer torque and clamping specifications — do not over-torque clamping screws. Power down and lock out the machine spindle before changing inserts. Inspect the insert pocket and clamping wedge or screw for wear or damage before seating a new insert. Handle carbide inserts with care to avoid chipping cutting edges prior to use.