Kennametal 6388787 Carbide Replaceable Tip Drill 9/16 in

Product Description

The KENNAMETAL 6388787 is a carbide replaceable tip drill insert designed for high-performance hole-making operations in steel and cast iron. The insert carries grade KCP15A, a fine-grain solid carbide formulation with an AlTiN coating applied via PVD process. The HPG insert geometry and helical flute design promote chip evacuation and cutting stability. This is a two-flute, two-margin insert with a standard point type and regular spiral, suited for demanding production drilling where tip replacement extends the usable life of the drill body without replacing the full assembly.

The 6388787 replaceable tip insert is intended for use in compatible KTFSS-series drill bodies in metalworking environments. Typical applications include through-hole and blind-hole drilling in steel and cast iron workpieces. The insert also supports inclined exit drilling and stacked-plate drilling operations, making it appropriate for aerospace, general machining, and fabrication shops where varied workpiece configurations are common. Licensed machinists and CNC operators are the primary installers.

Key Features

• Solid carbide KCP15A grade with fine-grain microstructure for wear resistance in steel and cast iron
• AlTiN coating via PVD process improves heat resistance and tool life
• HPG insert geometry engineered for stable cutting action and reduced thrust force
• Two-flute, two-margin design supports tight hole tolerances
• Rated for inclined exit and stacked-plate drilling applications
• Clamp-style insert holding method for secure, repeatable seating in KTFSS-series bodies

Compatibility

Designed for use with KTFSS-series replaceable tip drill bodies accepting an R-seat insert size with a 9/16 inch cutting diameter. The ISO number for this insert is KTFSS05625HPG.

Installation Notes

Installation should be performed by a qualified machinist or CNC tooling technician. Ensure the spindle is fully stopped and the machine is in a safe, locked-out state before seating or removing the replaceable tip. Clean the insert pocket and seating surfaces before installation to ensure accurate tip runout. Do not exceed the drill body manufacturer's recommended feed and speed parameters for the KCP15A grade.