Guhring 9003010002900 Micro Drill Bit Size 84 Cobalt

Product Description

The GUHRING 9003010002900 is a cobalt micro drill bit designed for precision drilling in small-diameter applications. Built to DIN 1899 standards, this Series 301 bit carries a wire gauge size of 84 with a decimal diameter of 0.0114 inches. The 118-degree faceted point with web-thinning geometry reduces entry force and helps center the drill on the workpiece. At 0.984 inches overall length with a tapered web configuration, it is engineered for controlled, accurate penetration in tight-tolerance work. Licensed machinists, tool-and-die makers, and precision fabricators are the primary users of this class of tooling.

This micro drill bit is suited for drilling small-diameter holes in aluminum, non-ferrous metals, and titanium alloys. The 5xD flute-to-diameter ratio supports chip evacuation in shallow-depth applications up to a maximum drilling depth of 0.058 inches. The bright uncoated finish makes it appropriate for use with cutting fluids or dry where surface adhesion is not a concern. It fits standard straight-cylindrical shank toolholders with a 1.00 mm shank diameter, common in precision machining centers and manual drill presses used in aerospace, electronics, and instrument manufacturing environments.

Key Features

• Wire gauge size 84, decimal diameter 0.0114 inches for precision micro-hole applications
• Cobalt construction provides heat resistance for drilling aluminum and titanium alloys
• 118-degree faceted point with web-thinning reduces entry force and improves centering
• Tapered web and regular spiral flute geometry support chip clearance in shallow holes
• DIN 1899 specification ensures dimensional consistency across the Series 301 line
• Bright uncoated finish compatible with cutting fluid or dry drilling setups

Compatibility

Designed as a DIN 1899 Series 301 micro drill bit for use in straight-cylindrical shank toolholders with a 1.00 mm shank diameter. Rated for primary workpiece materials including aluminum and non-ferrous metals (material codes K, M, N, P) and secondary workpiece material titanium alloy (material code S).

Installation Notes

Micro drill bits of this diameter should be installed and operated by machinists familiar with precision toolholding practices. Secure the shank fully in a collet or chuck rated for 1.00 mm shanks before operation and verify runout with a dial indicator when tolerance is critical. Do not exceed the rated maximum drilling depth of 0.058 inches without retracting to clear chips. Use appropriate cutting fluid for titanium alloys to manage heat buildup and extend tool life.