Guhring 9064050015900 Micro Drill Bit 1/16 in Carbide

Product Description

The GUHRING 9064050015900 is a solid carbide micro drill bit engineered for precision drilling in demanding industrial and machining applications. Built to Series 6405 specifications, it features a 1/16 inch (1.59 mm) diameter with a TiAlN coating for extended tool life and heat resistance at high cutting speeds. The 140-degree faceted point promotes accurate entry and reduces walking on hard materials. Through-coolant capability delivers cutting fluid directly to the cutting zone, improving chip evacuation and maintaining thermal control during deep-hole work. This bit is installed and operated by machinists and tooling professionals working on CNC machining centers and precision drill presses.

This micro drill bit is suited for production and precision machining environments where tight tolerances and small-diameter hole-making are required. It is designed for use in cast iron, stainless steel, and steel as primary workpiece materials, with secondary suitability for aluminum and titanium alloys. The straight-cylindrical shank with a 4 mm shank diameter fits standard precision collet systems and tool holders. The 5xD flute-to-diameter ratio supports drilling to a maximum depth of 11.10 mm, making it appropriate for through-hole and blind-hole applications in close-tolerance work.

Key Features

• Solid carbide construction in material grade K40 for rigidity and wear resistance in hard-material drilling
• TiAlN coating improves thermal hardness and oxidation resistance at elevated cutting temperatures
• 140-degree faceted point with web-thinned geometry reduces thrust force and improves centering accuracy
• Through-coolant design channels coolant directly to the cutting edge for efficient chip removal and heat management
• Spiral flute with regular helix promotes consistent chip flow on right-hand cut operations
• Straight-cylindrical 4 mm shank provides secure seating in collet chucks and shrink-fit holders

Compatibility

Designed for use in CNC machining centers and precision drill presses equipped with collet systems accepting a 4 mm straight-cylindrical shank. Primary workpiece materials include cast iron, stainless steel, and steel; secondary materials include aluminum and titanium alloys.

Installation Notes

Installation and operation should be performed by qualified machinists or tooling technicians familiar with small-diameter carbide tooling. Ensure the spindle and workpiece are fully secured and the machine is at a complete stop before installing or removing the bit. Solid carbide tooling is brittle and sensitive to side loads and runout — verify collet condition and holder concentricity before use to avoid premature breakage. Activate through-coolant supply before engaging the cut to maintain proper chip evacuation and tool temperature.