Kennametal 5066149 Indexable Drill Insert Dfthp KCU40

Product Description

The KENNAMETAL 5066149 is a solid carbide indexable drill insert designed for demanding metal-cutting and drilling operations. It carries the DFTHP designation, indicating a DFT insert style with an HP chipbreaker geometry engineered to manage chip flow under high-feed conditions. The insert is PVD-coated with a TiN and TiAlN multilayer finish, delivering thermal resistance and wear protection at the cutting edge. With a 15 mm (0.5906 inches) inscribed circle and an 84-degree trigon shape, this insert is suited for indexable drill bodies that accept the DFT insert family. Thickness is 0.2067 inches and corner radius is 1/32 inch (0.0313 inches). Licensed machinists and tool-and-die professionals are the primary installers.

This insert is applied in indexable drilling operations on CNC machining centers, lathes with live tooling, and dedicated drilling machines across both production and job-shop environments. The KCU40 grade is a PVD-coated carbide grade intended for a broad range of ferrous and non-ferrous workpiece materials where toughness and edge stability are required. The HP chipbreaker geometry is particularly effective in through-hole and blind-hole drilling where chip evacuation is critical to surface finish and tool life. Neutral hand orientation allows use without regard to rotation direction.

Key Features

• Solid carbide construction in KENNAMETAL KCU40 grade for toughness and wear resistance
• PVD-applied TiN and TiAlN multilayer coating for thermal protection and extended edge life
• HP chipbreaker geometry for controlled chip formation and evacuation in high-feed drilling
• 84-degree trigon (DFT) shape with neutral hand for flexible toolholder compatibility
• 1/32 inch (0.0313 inches) corner radius balances edge strength with surface finish requirements
• 15 mm inscribed circle with an insert size designation of 090508

Compatibility

Designed as an OEM-style replacement or standard consumable for indexable drill bodies that accept the DFT insert style with a 090508 insert size designation and a 5.5 mm mounting hole diameter.

Installation Notes

This insert is installed and indexed by qualified machinists following the toolholder manufacturer's torque and clamping specifications. Power down and lock out the machine spindle before seating or removing inserts. Inspect the insert pocket and clamping screw for wear or damage before installing a fresh insert. Do not exceed the feed and speed parameters specified by KENNAMETAL for the KCU40 grade and workpiece material combination.