Kennametal 6025891 Indexable Drill Insert KCU40 Carbide

Product Description

The KENNAMETAL 6025891 is a solid carbide indexable drill insert designed for use in indexable drilling systems where insert-style tooling is required. This insert carries the KCU40 manufacturer grade and features a PVD-applied TiAlN coating, which provides heat resistance and wear protection during demanding drilling operations. The insert follows a Trigon (84-degree included angle) geometry with a DS chipbreaker configuration. With a 4.4 mm inscribed circle, a thickness of 0.1875 inches (3/16 inches), and a 0.8 mm corner radius, this insert is sized for precision fitment in compatible indexable drill bodies. It is installed by machinists and tooling technicians in CNC and manual drilling applications.

This insert is suited for industrial machining environments where indexable carbide tooling is used in drilling operations on a range of workpiece materials. The TiAlN coating and KCU40 grade make it appropriate for applications involving ferrous metals and other materials that benefit from a hard, thermally stable coating. The DS chipbreaker aids in chip control during through-hole and blind-hole drilling. This is a single-insert unit, packaged individually.

Key Features

• KCU40 grade solid carbide substrate with PVD TiAlN coating for wear and heat resistance
• Trigon insert shape with 84-degree included angle for stable cutting geometry
• DS chipbreaker configuration for controlled chip evacuation during drilling
• 4.4 mm inscribed circle diameter with 0.8 mm corner radius for precision seating
• Neutral hand orientation for broad compatibility with indexable drill bodies
• Insert size designation 070408 for cross-reference and replacement identification

Compatibility

Designed as an OEM-style replacement or standard-fit indexable drill insert for compatible KENNAMETAL DFT-style indexable drill bodies requiring a Trigon insert with a 4.4 mm inscribed circle and KCU40 grade.

Installation Notes

Installation of indexable drill inserts should be performed by qualified machinists or tooling technicians. Power down and lock out the machine before changing inserts. Use the manufacturer-specified torque wrench or insert key for clamping screws to avoid over-tightening or seat damage. Inspect the insert pocket and clamping screw for wear or debris before seating a new insert.