Sumitomo 5KHZ229 Carbide Replaceable Tip Drill 16.5mm ACX80

Product Description

The SUMITOMO 5KHZ229 is a carbide replaceable tip drill in the SMD Series, designed for high-performance drilling in a wide range of workpiece materials. The drill tip features a 140-degree included point angle and a MEL insert geometry, paired with a dual-layer TiAlCr and TiSi PVD coating applied through the ACX80 grade carbide. This combination supports cutting stability, heat resistance, and tool life across universal material categories. The through-coolant design channels coolant directly to the cutting edge, reducing heat buildup and aiding chip evacuation in deep-hole drilling operations. This tool is installed and used by machinists and CNC tooling professionals in production and job shop environments.

The 5KHZ229 is suited for drilling operations requiring a 16.5mm diameter hole in ferrous metals, stainless steels, cast irons, and superalloys. Its primary workpiece material codes cover K, M, P, and S classifications under ISO material groupings, making it a versatile option for shops running mixed-material production schedules. The replaceable tip design allows tip exchange without removing the drill body from the spindle, reducing downtime between tool changes. This drill is a fit for CNC machining centers and production drilling applications where consistent hole quality and tool economy are priorities.

Key Features

• ACX80 grade solid carbide tip with MEL insert geometry for controlled cutting action
• TiAlCr and TiSi dual-layer PVD coating for heat resistance and extended tool life
• 140-degree point angle optimized for universal workpiece material entry
• Through-coolant capability for chip evacuation and thermal management in deep drilling
• Replaceable tip construction reduces body replacement cost and changeover time
• ISO material coverage across K, M, P, and S classifications

Compatibility

Designed as an OEM-style replacement tip for SMD Series replaceable tip drill bodies compatible with the 16.5mm diameter tip seat. Specific body compatibility should be verified against SUMITOMO SMD Series tooling documentation before ordering.

Installation Notes

Installation of replaceable carbide drill tips should be performed by a qualified machinist following the tool manufacturer torque and seating guidelines for the SMD Series body. Ensure the spindle is fully stopped and the machine is locked out before tip removal or installation. Through-coolant passages should be inspected and cleared before reassembly to maintain consistent coolant flow to the cutting edge. Verify tip seating and clamp engagement before resuming cutting operations.