Kennametal 2499775 Carbide Replaceable Tip Drill 21mm

Product Description

The KENNAMETAL 2499775 is a KSEM-series carbide replaceable tip drill designed for precision hole-making in steel and cast iron. The tip is manufactured from fine-grain solid carbide with a PVD-applied TiAlN coating, which provides thermal resistance and extended edge life in demanding metal-cutting applications. The cutting diameter is 21mm (0.8268 inches) with a 140-degree drill point angle and a helical, two-flute geometry. The insert is held by a clamp and the tool includes through-coolant capability, supporting both flood coolant and minimum quantity lubrication (MQL) delivery. This drill is suited for machining centers and CNC drilling operations in industrial manufacturing environments.

The 2499775 is built for use in drilling standard entry and exit conditions, inclined-exit surfaces, and stacked-plate setups. Its HPG insert geometry and two-flute, two-margin configuration are optimized for chip control and hole quality in P-category steel and K-category cast iron workpiece materials. The through-coolant passages support consistent lubrication at the cutting edge, reducing heat buildup during deep or high-feed drilling cycles. This tool is typically used by machinists and CNC operators in production and job-shop environments.

Key Features

• 21mm cutting diameter with fine-grain solid carbide tip for wear resistance in ferrous materials
• TiAlN PVD coating provides thermal barrier and extends tool life in steel and cast iron
• 140-degree standard drill point angle suits a broad range of entry conditions
• Through-coolant design compatible with flood coolant and MQL delivery
• HPG insert geometry with two flutes and two margins for chip control and hole accuracy
• Clamp-style insert holding for secure, repeatable tip seating

Compatibility

Designed for use in KSEM-series replaceable tip drill bodies accepting insert seat size 3. Suitable for workpiece materials classified as ISO P (steel) and ISO K (cast iron).

Installation Notes

Installation of replaceable carbide tip drills should be performed by a qualified machinist or tooling technician. Ensure the drill body is fully cleaned and free of chips or debris before seating the tip, as contamination at the insert interface can cause runout and premature tip failure. Confirm through-coolant passages are clear and that coolant pressure is appropriate for the application before beginning a cut. Never overtighten or improvise clamping hardware — use the correct torquing method specified in the KSEM toolholder documentation.