Kennametal 4114340 Grooving Insert KCU25 Solid Carbide Altin

Product Description

The KENNAMETAL 4114340 is a solid carbide grooving insert with an AlTiN coating applied via PVD process. Designed for the Series A4 tooling platform, it features a G250GMN chip breaker geometry and a neutral hand orientation. The cutting width measures 0.25 inches (6.35 mm), and the maximum depth of cut reaches 0.187 inches (4.75 mm). The KCU25 grade combines a tough carbide substrate with the wear resistance of an aluminum titanium nitride coating, making it suited for interrupted cuts and demanding grooving operations on a range of workpiece materials.

This insert is used in external and face grooving applications on CNC lathes and turning centers. The GMN chip breaker geometry promotes chip control in medium to finish grooving passes. The 90-degree included angle and 0.031-inch (0.79 mm) corner radius support clean groove-wall definition. It is a multi-use insert appropriate for production turning environments where consistent groove geometry and surface finish are required. Machinists and CNC operators working in metalworking shops, aerospace, and general manufacturing will find this insert applicable to a broad range of grooving tasks.

Key Features

• KCU25 solid carbide grade with PVD-applied AlTiN coating for extended tool life in abrasive and interrupted-cut conditions
• GMN chip breaker geometry for effective chip control during grooving operations
• Neutral hand orientation compatible with standard Series A4 grooving toolholders
• 0.25-inch (6.35 mm) cutting width with a maximum depth of cut of 0.187 inches (4.75 mm)
• 0.031-inch (0.79 mm) corner radius for defined groove-wall transitions
• Multi-use insert design supports repeat use across compatible tooling setups

Compatibility

Designed for use with Series A4 grooving toolholders. Manufacturer catalog reference number A4G250I06P2GMN. Consult KENNAMETAL Series A4 toolholder specifications to confirm seat and clamping compatibility before installation.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician with the machine in a powered-off and locked-out state per applicable machine-guarding and lockout-tagout procedures. Verify the insert seats fully and evenly in the toolholder pocket before clamping. Do not exceed the rated maximum depth of cut of 0.187 inches (4.75 mm). Inspect the insert edge condition and seating surface between tool changes to avoid premature failure or dimensional error.