Kennametal 6388781 Carbide Replaceable Tip Drill 14mm Ktfs

Product Description

The KENNAMETAL 6388781 is a carbide replaceable tip drill in the KTFS series, designed for precision hole-making in metal cutting applications. The tip carries a KCP15A grade solid carbide insert with an AlTiN coating applied via PVD process, providing thermal resistance and wear protection in demanding cutting conditions. The drill point geometry uses an HPG insert profile at a 143-degree included angle, producing self-centering entry and reduced thrust. This style of replaceable tip drill is installed and serviced by machinists and toolroom technicians on CNC machining centers and drill presses.

This drill is suited for production environments requiring consistent hole quality in ferrous and non-ferrous materials. The 14mm cutting diameter (0.5512 inches) targets general-purpose drilling operations in manufacturing and job shop settings. The replaceable tip design reduces per-hole tooling cost compared to solid integral drills by allowing tip exchange without discarding the drill body. Insert seat size is R, which determines tip-to-body fitment within the KTFS platform.

Key Features

• 14mm (0.5512 inch) cutting diameter in the KTFS replaceable tip series
• KCP15A grade solid carbide tip for high-performance metal cutting
• AlTiN coating via PVD process for heat and wear resistance
• 143-degree drill point angle with HPG insert geometry for reduced thrust and accurate entry
• Insert seat size R for direct replacement within the KTFS body platform
• No through-coolant design - suitable for external coolant or dry cutting setups

Compatibility

Designed as a replaceable tip insert for KTFS series drill bodies accepting an R seat size. Verify body series and seat designation before ordering to confirm tip-to-body fitment.

Installation Notes

Replaceable tip drills of this type are installed and exchanged by machinists following standard toolroom procedures. Ensure the machine spindle is fully stopped and the tool is secured in a vise or tool holder before tip removal or installation. Follow the drill body manufacturer torque guidance for the clamping screw using a calibrated torque wrench. Inspect the insert seat for chips or debris before seating the new tip to maintain runout and hole quality.