Guhring 9003010010400 Micro Drill Bit 1.04mm 118 Cobalt

Product Description

The GUHRING 9003010010400 is a micro drill bit designed for precision drilling in small-diameter applications. Built from cobalt high-speed steel with a bright uncoated finish, this bit delivers reliable performance in tough materials without the need for a coating. It carries a 118-degree faceted point angle and a web-thinned, tapered web configuration that reduces entry force and improves centering accuracy. The straight-cylindrical shank measures 1.50 mm and seats securely in standard collet chucks. Overall length is 25 mm, making it suitable for compact setups and precision machine work. Licensed machinists and toolroom technicians are the typical installers for this type of precision cutting tool.

This micro drill bit is sized at wire gauge 59, equivalent to 1.04 mm (0.0409 inches) in diameter. It is rated primarily for aluminum and other non-ferrous materials, with secondary suitability for titanium alloy. The spiral flute geometry with a 5xD flute-to-diameter ratio and 6.80 mm flute length handles chip evacuation effectively at this scale. Maximum drilling depth is 5.24 mm (0.2060 inches). The right-hand cutting direction suits standard spindle rotation on CNC machining centers, drill presses, and precision benchtop equipment. This bit conforms to DIN 1899 specification, Series 301.

Key Features

• Cobalt construction for elevated heat resistance in hard and abrasive materials
• 118-degree faceted point angle with web thinning for reduced thrust and improved entry accuracy
• Spiral flute with 5xD ratio promotes efficient chip clearance at 1.04 mm diameter
• Straight-cylindrical shank at 1.50 mm fits standard collet and chuck systems
• Bright uncoated finish allows easy visual inspection of cutting edge condition
• Conforms to DIN 1899 for consistent dimensional standards across the Series 301 line

Compatibility

Designed as an OEM-specification micro drill bit per DIN 1899 Series 301, suitable for use in CNC machining centers, precision drill presses, and manual spindles accepting a 1.50 mm straight-cylindrical shank. Primary workpiece material compatibility includes aluminum and non-ferrous metals; secondary compatibility includes titanium alloy.

Installation Notes

Installation and use of this micro drill bit should be performed by qualified machinists or toolroom technicians familiar with precision drilling operations. Secure the straight-cylindrical shank firmly in a matching collet or chuck to minimize runout before operation. At this diameter, even minor runout can cause bit deflection or breakage, so verify chuck concentricity before use. Follow machine manufacturer guidelines for spindle speed and feed rate when drilling aluminum or titanium alloy.