Guhring 9064000023500 Micro Drill Bit 2.35mm Carbide

Product Description

The GUHRING 9064000023500 is a solid carbide micro drill bit designed for precision drilling in demanding metalworking applications. Built to Series 6400 specifications, it features a 2.35 mm diameter, a 140-degree faceted point, and a TiAlN coating that improves heat resistance and extends tool life in abrasive materials. The spiral flute geometry, combined with web thinning, promotes efficient chip evacuation and reduces thrust force at entry. With an overall length of 59 mm and a flute length of 14.1 mm, this bit is suited for controlled, shallow-depth drilling operations. It is installed and used by machinists, tool-and-die technicians, and precision fabricators working on close-tolerance components.

This micro drill bit is intended for use in cast iron, stainless steel, and carbon steel as primary workpiece materials, with secondary suitability for aluminum and titanium alloys. The straight-cylindrical shank with a 4 mm diameter seats securely in standard collet chucks and drill chucks. It is well suited for CNC machining centers, drill presses, and precision benchtop drilling setups where small-diameter hole accuracy is critical. The 4xD flute-to-diameter ratio supports maximum drilling depths up to 11.2 mm per pass.

Key Features

• 2.35 mm diameter solid carbide construction using M40-grade carbide substrate for rigidity in micro drilling
• TiAlN coating for improved thermal resistance and extended tool life in ferrous and hard materials
• 140-degree faceted point reduces walking and improves entry accuracy on flat and curved surfaces
• Web-thinned geometry lowers cutting thrust and reduces heat buildup at the drill tip
• Right-hand spiral flute design promotes chip evacuation in blind and through-hole applications
• Straight-cylindrical shank at 4 mm diameter for compatibility with standard collet and drill chuck systems

Compatibility

Designed for use in cast iron, stainless steel, steel, aluminum, and titanium alloy workpieces. The straight-cylindrical shank fits standard collet chucks and drill chucks accepting a 4 mm shank diameter.

Installation Notes

This tool is installed by machinists and CNC technicians using standard tool-holding collets or drill chucks rated for the 4 mm shank diameter. Ensure the machine spindle is fully stopped and the tool holder is clean and free of debris before seating the bit. Use appropriate cutting fluid or coolant where the workpiece material and machine setup allow, even though coolant-through is not supported by this tool. Follow shop-standard feeds and speeds for carbide micro drills at this diameter to avoid tip fracture, which is the most common failure mode in sub-3 mm solid carbide tooling.