Guhring 9003010006800 Micro Drill Bit 0.0268 in Cobalt

Product Description

The GUHRING 9003010006800 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. It measures 0.0268 inches in diameter with an overall length of 0.984 inches and a 118-degree faceted point angle. The web-thinned, tapered web geometry reduces thrust force at entry, which is critical when drilling into aluminum, titanium alloys, and other materials where chip control and hole accuracy matter. The spiral flute design promotes efficient chip evacuation. This bit is intended for use by machinists and precision trade professionals working with CNC equipment, drill presses, or precision hand tools where micro-bore accuracy is required.

This Series 301 micro drill bit is sized for applications demanding tight tolerances in non-ferrous metals and light alloys. Its primary workpiece material classification covers aluminum (K, M, N, P material codes), with secondary suitability for titanium alloys (S code). The 5xD flute-to-diameter ratio and a maximum drilling depth of 0.149 inches make it well-suited for shallow, high-precision holes in aerospace components, electronics hardware, and precision mechanical assemblies. The straight-cylindrical shank with a 1.00 mm shank diameter seats securely in standard micro collets and precision chucks.

Key Features

• 0.0268-inch cutting diameter with diameter tolerance of +0.000 to -0.004 mm for precise hole sizing
• 118-degree faceted point angle with web thinning reduces entry thrust and improves centering
• Cobalt construction provides heat resistance and wear durability compared to standard HSS
• Right-hand spiral flute promotes chip evacuation in shallow micro bores
• Tapered web configuration supports rigidity across the 5xD flute length
• Conforms to DIN 1899 specification for standardized micro drill geometry

Compatibility

Designed as an OEM-style micro drill bit per DIN 1899 specification, compatible with standard precision collet chucks and micro drill holders accepting a 1.00 mm straight-cylindrical shank.

Installation Notes

Micro drill bits of this diameter should be installed and operated by qualified machinists familiar with precision drilling setups. Ensure the collet or chuck is clean and properly torqued before use to prevent runout at this diameter. Always power down and secure the spindle before changing tooling. Avoid applying lateral force during drilling, as bits at this diameter are highly susceptible to deflection and breakage.