Kennametal 7034253 Carbide Indexable Drill Insert KCU25

Product Description

The KENNAMETAL 7034253 is a carbide indexable drill insert designed for use in indexable drill bodies that accept the DFPR insert style. Manufactured to KCU25 grade with an MT-TiCN coating, this insert delivers thermal and wear resistance suited to demanding drilling operations in steel and cast materials. It features an inscribed circle of 0.37 inches (9.40 mm), a thickness of approximately 0.118 inches (3.00 mm), and a corner radius of 0.019 inches (0.50 mm). The PK chipbreaker geometry promotes controlled chip evacuation during through-hole and blind-hole drilling applications. Installation is performed by licensed machinists and tooling technicians working with compatible indexable drill bodies.

This insert is intended for use in indexable drilling systems that accept DFPR-style inserts, size code 09. It is suited to production machining environments including CNC turning centers and machining centers where repeatable hole quality and insert interchangeability are required. The right-hand cutting orientation and 11-degree relief angle make it appropriate for general-purpose drilling at moderate to high feed rates in metalworking applications. It ships with a minimum order quantity of 5 pieces, with each package containing 1 insert.

Key Features

• KCU25 carbide grade with MT-TiCN coating for wear and heat resistance
• DFPR insert style, size code 09, right-hand cutting orientation
• Inscribed circle of 0.37 inches (9.40 mm) for precise seat engagement
• Corner radius of 0.019 inches (0.50 mm) for controlled edge geometry
• PK chipbreaker promotes efficient chip control in drilling operations
• 11-degree relief angle reduces flank wear in moderate-to-high feed applications

Compatibility

Designed for use in indexable drill bodies that accept DFPR-style inserts, insert size code 09, as indicated by the ANSI and ISO code DFPR090305PKO.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician with the machine powered down and spindle locked before insert exchange. Use the appropriate torx or hex key as specified by the drill body manufacturer to secure the insert clamp screw to the recommended seating torque indicated in the drill body documentation. Inspect the insert pocket and clamping surfaces for chips or debris before seating the new insert. Verify insert orientation and hand designation match the drill body requirement before resuming operation.