Guhring 9006600001800 Micro Drill Bit Size 94 Cobalt

Product Description

The GUHRING 9006600001800 is a micro drill bit engineered for precision drilling in demanding materials. Built to DIN 1899 specification, this Series 660 bit carries a wire size designation of 94, translating to a decimal diameter of 0.0071 inches. The substrate is cobalt high-speed steel, and the cutting edges receive a TiN coating to extend tool life under heat and abrasion. At 0.984 inches overall length with a spiral flute geometry and a faceted 118-degree point, the bit is designed for controlled entry and chip evacuation in tight-tolerance applications. A tapered web with web-thinning reduces thrust force and helps maintain accuracy at this scale.

This bit targets precision machining operations where small-diameter holes are required in aluminum, non-ferrous metals, and titanium alloys. Typical applications include aerospace component drilling, electronics enclosure work, instrument manufacturing, and toolroom operations. The 5xD flute-to-diameter ratio supports moderate depth drilling, with a maximum drilling depth of 0.033 inches. A straight-cylindrical shank with a 1.00 mm diameter seats directly into collet-style toolholders or precision drill chucks used on CNC machining centers, drill presses, and manual toolroom equipment. Right-hand cutting direction aligns with standard spindle rotation.

Key Features

• Cobalt high-speed steel construction with TiN coating for extended tool life in abrasive and heat-generating cuts
• Faceted 118-degree point with web-thinning and tapered web configuration reduces entry thrust force
• Spiral flute geometry promotes chip evacuation in micro-diameter through-holes
• DIN 1899 specification ensures dimensional consistency across production runs
• Straight-cylindrical shank compatible with standard collets and precision micro drill chucks
• Diameter tolerance held to +0.000 to -0.004 mm for tight-fit applications

Compatibility

Designed as a DIN 1899 Series 660 micro drill bit for use in collet-style toolholders and precision drill chucks accepting a 1.00 mm straight-cylindrical shank. Primary workpiece materials are aluminum and non-ferrous metals; secondary rated workpiece material is titanium alloy.

Installation Notes

Micro drill bits at this diameter require a precision collet or micro drill chuck with minimal runout — standard keyed chucks are not recommended. Secure the shank fully into the toolholder before starting the spindle, and verify concentricity before drilling. Always power down and lock out the machine before changing tooling. At sub-0.010 inch diameters, feed rate and spindle speed selection are critical to preventing bit breakage; consult the manufacturer feed and speed tables for the specific workpiece material.