Sumitomo 5KHY191 Carbide Replaceable Tip Drill 16.5mm ACX70

Product Description

The SUMITOMO 5KHY191 is a carbide replaceable tip drill in the SMD series, designed for high-productivity hole-making in steel workpieces. The drill uses an SMDT1650MTL tip insert with ACX70 grade solid carbide, coated with a TiAlCr and TiSi finish for extended tool life in ferrous materials. The 16.5mm cutting diameter and 140-degree included angle are suited for general-purpose through-hole drilling. Through-coolant capability delivers coolant directly to the cutting zone, reducing heat buildup and improving chip evacuation. This tool is installed and operated by machinists and tooling technicians in CNC machining centers and production drilling applications.

The 5KHY191 is intended for steel cutting applications where consistent hole geometry and tool life are required. The MTL insert geometry is optimized for primary workpiece materials classified under ISO material group P, which covers carbon steels, alloy steels, and ferritic stainless steels. The replaceable tip design allows the carbide tip to be swapped without replacing the drill body, reducing tooling cost in high-volume production environments. Typical applications include structural component drilling, fixture plate machining, and general shop floor CNC work where through-coolant is available.

Key Features

• ACX70 grade solid carbide tip for wear resistance in steel cutting
• TiAlCr and TiSi dual coating for heat resistance and extended tool life
• 140-degree included angle suits general-purpose steel drilling
• Through-coolant design directs coolant to the cutting edge for chip control
• MTL insert geometry optimized for ISO P-class ferrous materials
• Replaceable tip construction reduces body replacement cost in production use

Compatibility

Designed for use with SMD series drill bodies that accept the SMDT1650MTL replaceable carbide tip. Intended for ISO material group P workpiece materials, primarily steel.

Installation Notes

Installation of replaceable tip drills should be performed by qualified tooling technicians following the drill body manufacturer torque and seating procedures documented in the SMD series tooling manual. Ensure the drill body is fully deenergized and the spindle is locked before tip replacement. Verify tip seating and clamping before running the tool at cutting speed. Through-coolant pressure and flow should be confirmed against machine and tooling specifications before operation.