Kennametal 5067478 Indexable Drill Insert KCU25 Altin

Product Description

The KENNAMETAL 5067478 is a solid carbide indexable drill insert designed for use in modular indexable drilling systems. It features an 84-degree trigon shape with a 12 mm (0.4724 inch) inscribed circle and carries the KCU25 grade designation, a PVD-applied AlTiN coating engineered for thermal resistance and wear performance at elevated cutting speeds. The MD chipbreaker geometry promotes chip control during drilling operations in steel and similar workpiece materials. At 0.1875 inches thick with a 0.0313-inch corner radius, this insert is suited for demanding hole-making applications. Machinists and tooling specialists working in production or job-shop environments will recognize this as a direct-fit replacement insert for compatible Kennametal DFT-style drill bodies.

This insert is intended for use in indexable drill bodies that accept DFT-style trigon inserts with a 12 mm inscribed circle and size designation 070408. It is appropriate for medium to high-volume drilling in ferrous materials where consistent hole quality and tool life are priorities. The neutral hand orientation allows for straightforward positioning in the drill body pocket. Typical applications include through-hole and blind-hole drilling on CNC machining centers and lathes with live tooling.

Key Features

• KCU25 grade solid carbide construction with PVD AlTiN coating for heat and wear resistance
• 84-degree trigon shape with MD chipbreaker for positive chip evacuation
• 12 mm inscribed circle (0.4724 inches) with insert size designation 070408
• Corner radius of 0.0313 inches (0.79 mm) for controlled edge geometry
• Neutral hand insert — compatible with standard DFT-style drill body pockets
• Mounting hole diameter of 0.1732 inches for secure pocket clamping

Compatibility

Designed as a replacement insert for Kennametal DFT-style indexable drill bodies that accept trigon inserts with a 12 mm inscribed circle and insert size 070408. Verify drill body grade and pocket specifications before ordering.

Installation Notes

Insert installation should be performed by a qualified machinist or toolroom technician. Ensure the drill body pocket and clamping screw are clean and free of chips before seating the insert. Power down and de-energize the machine spindle before any insert change. Use the manufacturer-specified torx or hex key for the clamping screw — do not over-torque, and do not use impact drivers on insert screws.