Kennametal 5533081 Cutoff Insert KCU25 Carbide 1.4 Mm

Product Description

The KENNAMETAL 5533081 is a carbide cutoff insert designed for parting and grooving operations on CNC lathes and turning centers. It carries the manufacturer grade designation KCU25 and is part of the Beyond Evolution series, finished with a PVD-applied AlTiN coating for extended tool life in demanding cutting conditions. The insert features a 1.40 mm (0.0550 inch) cutting width, a neutral lead angle, and a 2-degree relief angle. A CF chipbreaker geometry promotes controlled chip formation during cutoff work. This insert is installed by machinists and CNC operators running production turning applications.

This insert is suited for cutoff and parting operations in both production and job-shop turning environments. The EC-U insert style and 1B seat size position it for light to medium-duty cutoff work on bar stock and turned components. The single-end configuration means the insert is replaced rather than flipped, maintaining consistent geometry at the cutting edge. Applications include grooving and parting on ferrous and non-ferrous workpieces where tight dimensional control at the cutoff zone is required.

Key Features

• KCU25 carbide grade with PVD-applied AlTiN coating for wear resistance
• 1.40 mm (0.0550 inch) cutting width for precision parting operations
• CF chipbreaker geometry for controlled chip evacuation
• Neutral lead angle and 2-degree relief angle for stable cutoff entry
• Beyond Evolution series — EC-U insert style, 1B seat size
• Single-end insert for consistent edge geometry throughout service life

Compatibility

Designed for use in toolholders accepting EC-U style inserts with a 1B insert seat size. Consult the toolholder documentation to confirm seat compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Power down and lock out the machine spindle before seating or removing the insert. Use the manufacturer-specified torque wrench and clamping hardware for the toolholder to secure the insert without cracking the carbide substrate. Inspect the insert seat for chips or debris before installation to ensure full seating and accurate edge positioning.