Kennametal 4114338 Grooving Insert G187GMN KCU25 Solid Carbide

Product Description

The KENNAMETAL 4114338 is a solid carbide grooving insert designed for precision turning and grooving operations on CNC lathes and turning centers. Manufactured to the G187GMN chip breaker geometry and coated with an AlTiN (aluminum titanium nitride) finish via PVD process, this insert delivers controlled chip evacuation and extended tool life in demanding materials. The KCU25 grade is engineered for a broad range of workpiece materials, making this insert a versatile choice for production environments. A double-end configuration provides two usable cutting edges per insert, improving cost efficiency per edge in high-volume operations.

This insert is suited for external grooving, parting, and related turning operations in both job shop and production machining settings. It fits A4 series toolholders and is appropriate for use on ferrous and non-ferrous workpiece materials where controlled groove geometry and accurate width are required. Neutral hand orientation supports use in standard right-hand tooling setups. The GMN chip breaker geometry is optimized for medium-depth grooving passes within the rated depth-of-cut range.

Key Features

• Solid carbide substrate with PVD-applied AlTiN coating for heat and wear resistance
• G187GMN chip breaker geometry for controlled chip formation during grooving
• Double-end insert provides two cutting edges per piece
• Neutral hand orientation compatible with standard toolholder setups
• Corner radius of 0.79 mm (0.0312 inches) for defined groove edge geometry
• A4 series designation for direct toolholder compatibility matching

Compatibility

Designed for use with A4 series grooving toolholders. Insert seat size 4. Confirm toolholder manufacturer specifications before installation to ensure proper seating and clamping.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the machine fully stopped and in a locked-out state. Use the appropriate torx or hex key as specified by the toolholder manufacturer to seat and clamp the insert securely. Do not exceed the rated maximum depth of cut for this insert. Inspect the insert seat and clamping components for wear or debris before seating a new insert.