Kennametal 2499858 Carbide Replaceable Tip Drill 20.24mm

Product Description

The KENNAMETAL 2499858 is a carbide replaceable tip drill in the KSEM series, designed for precision hole-making in steel and cast iron. The tip is manufactured from solid carbide with a fine grain substrate and carries a PVD-applied TiAlN coating for heat and wear resistance. The HPG insert geometry and 140-degree drill point angle promote controlled chip formation and accurate entry. With a cutting diameter of 20.24mm (0.7968 inches) and two helical flutes, this insert seats into size-3 KSEM tool bodies and is secured by a clamp-style holding method. It weighs approximately 0.033 pounds and is sold individually.

This replaceable tip drill insert is suited for production drilling in ferrous materials, including steel (ISO material code P) and cast iron (ISO material code K). The through-coolant design supports both flood coolant and MQL (minimum quantity lubricant) delivery, making it appropriate for high-throughput machining operations. Typical applications include straight drilling, inclined exit drilling, and stacked plate drilling. The clamp-held carbide tip allows fast tip changes without removing the tool body from the spindle, reducing downtime in CNC machining center environments.

Key Features

• Solid carbide tip with fine grain substrate for edge stability in ferrous materials
• TiAlN PVD coating provides thermal resistance and extended tool life
• 140-degree included angle suits standard drilling in steel and cast iron
• Through-coolant capable - supports flood coolant and MQL delivery
• HPG insert geometry with 2-flute, 2-margin configuration for accurate hole geometry
• Clamp-held insert seat (size 3) enables rapid tip replacement without tool body removal

Compatibility

Designed for use with KSEM series tool bodies accepting a size-3 insert seat. ISO number KSEM0797HPG identifies the specific tip geometry and seat size for correct body matching.

Installation Notes

Installation is performed by machining technicians familiar with indexable drilling systems. Power down and lock out the machine spindle before seating or removing the carbide tip. Use the manufacturer-specified torque wrench and clamp screw to secure the insert - do not use impact tools on the clamp screw. Verify coolant port alignment and confirm the insert is fully seated before resuming operation.