Kennametal 5988789 Grooving Insert KCU25 0.25 in Carbide

Product Description

The KENNAMETAL 5988789 is a solid carbide grooving insert designed for external grooving and parting operations on CNC lathes and turning centers. Built to the EG-P insert style with a GUP chip breaker geometry, it features an AlTiN coating applied via PVD process and carries the KCU25 manufacturer grade. The cutting width measures 0.25 inches (6.35 mm) with a maximum depth of cut of 0.157 inches (4.00 mm). The positive rake angle of 27 degrees and the GUP chip breaker promote efficient chip evacuation in a range of workpiece materials. This insert is part of the Beyond Evolution series and is installed by machinists and CNC operators in production and job-shop environments.

This insert is suited for grooving and profiling operations on turning equipment where a neutral-hand, metric-sized EG-P style insert is required. The KCU25 grade with AlTiN PVD coating performs across a broad range of cutting conditions and is particularly relevant for shops running medium to high cutting speeds. It fits toolholders designed for EG-P size 6 insert style. The GUP chip breaker geometry is optimized for positive-rake grooving with controlled chip flow.

Key Features

• Solid carbide construction with AlTiN PVD coating for wear and heat resistance
• KCU25 grade suited for a wide range of turning and grooving applications
• 0.25 inch (6.35 mm) cutting width with maximum depth of cut up to 0.157 inches (4.00 mm)
• Positive rake angle of 27 degrees with GUP chip breaker for efficient chip control
• Corner radius of 0.031 inches (0.80 mm) for controlled edge geometry
• Neutral hand orientation for flexible toolholder compatibility
• Part of the Beyond Evolution series for consistent insert-to-insert performance

Compatibility

Designed as a replacement-style EG-P size 6 grooving insert for use in toolholders compatible with the Beyond Evolution series EG-P insert style. Consult toolholder documentation to confirm insert seat and clamping compatibility before installation.

Installation Notes

Grooving inserts of this type are installed by machinists and CNC setup technicians. Power down and lock out the machine spindle before changing inserts. Use the appropriate insert clamp key or torx driver specified by the toolholder manufacturer — do not overtighten. Inspect the insert seat and clamping screw for debris or damage before seating the new insert to ensure proper seating and runout.