Sumitomo 5KHZ274 Replaceable Drill Tip ACX80 25mm

Product Description

The SUMITOMO 5KHZ274 is a replaceable drill tip designed for use with SMD-series modular drill bodies. It features a 0.9843 inch (25.00 mm) cutting diameter and is manufactured from solid carbide with a PVD-applied TiAlCr and TiSi dual-layer coating. The MEL insert geometry and 140-degree included angle support efficient chip formation across a wide range of workpiece materials. Coolant-through capability delivers cutting fluid directly to the cutting edge, reducing heat buildup and extending tool life. This tip is installed and changed by machinists and tooling technicians on CNC turning and machining center setups.

The 5KHZ274 carries a universal primary workpiece material classification, covering material codes K, M, P, and S — making it suitable for cast iron, stainless steel, carbon steel, and heat-resistant superalloys. It is suited for production drilling applications in aerospace, automotive, and general machining environments where consistent hole quality and tool change efficiency are priorities. The replaceable tip design allows worn tips to be swapped without removing the drill body from the spindle, reducing downtime during high-volume runs.

Key Features

• 0.9843 inch (25.00 mm) cutting diameter in the SMD series modular drill system
• Solid carbide substrate with PVD-applied TiAlCr and TiSi dual-layer coating (Grade ACX80)
• MEL insert geometry with 140-degree included angle for broad material compatibility
• Coolant-through design channels cutting fluid directly to the cutting zone
• Universal workpiece material rating covers K, M, P, and S material codes
• Replaceable tip format minimizes changeover time on the machine

Compatibility

Designed for use with SUMITOMO SMD-series modular drill bodies accepting the MEL replaceable tip format at 25.00 mm diameter.

Installation Notes

Replaceable drill tips in the SMD series are installed by tooling technicians or machinists following the drill body manufacturer torque and seating procedure documented in the tooling manual. Ensure the drill body interface is clean and free of chips or debris before seating the tip. Confirm coolant-through passages are clear and unobstructed prior to operation. Do not run the tip without the drill body fully secured in the tool holder.