Guhring 9006600008100 Micro Drill Bit Wire 67 Cobalt

Product Description

The GUHRING 9006600008100 is a micro drill bit designed for precision drilling in demanding industrial and machining applications. Built from cobalt high-speed steel and finished with a titanium nitride (TiN) coating, this bit delivers extended tool life and improved wear resistance compared to standard HSS tooling. It carries a wire gauge designation of No. 67, equivalent to 0.0319 inches in decimal, with a 118-degree faceted point angle and a web-thinned, tapered web configuration for reduced thrust and cleaner entry. The 0.984-inch overall length and 1.50 mm straight-cylindrical shank make it suited for high-precision spindle work requiring consistent, repeatable hole quality.

This drill bit is rated primarily for aluminum and non-ferrous materials, with secondary suitability for titanium alloys. It fits applications in aerospace component machining, precision instrument manufacturing, and general metalworking where tight hole tolerances and small-diameter accuracy are critical. The right-hand spiral flute geometry promotes efficient chip evacuation in short-hole drilling. Maximum drilling depth is 4.09 mm (0.161 inches), consistent with its 5xD flute-to-diameter ratio. It conforms to DIN 1899 specification. Sold individually, with a minimum order quantity of 10 units.

Key Features

• Cobalt construction with TiN coating for extended wear resistance in hard and abrasive materials
• 118-degree faceted point with web thinning reduces entry force and improves hole accuracy
• Wire size No. 67 (0.0319 inches) for tight-tolerance micro drilling
• Right-hand cut, regular spiral flute geometry for efficient chip removal
• Straight-cylindrical shank at 1.50 mm diameter for secure collet or chuck grip
• Conforms to DIN 1899 specification

Compatibility

Designed as a DIN 1899 Series 660 micro drill for use in CNC machining centers, drill presses, and precision hand-held spindles accepting a 1.50 mm straight-cylindrical shank. Primary workpiece material compatibility includes aluminum and non-ferrous metals (material codes K, M, N, P); secondary compatibility includes titanium alloys (material code S).

Installation Notes

Installation and use of this micro drill bit should be performed by qualified machinists or tooling technicians familiar with small-diameter tooling practices. Secure the straight-cylindrical shank firmly in a precision collet or drill chuck rated for the shank diameter before operation. Confirm spindle runout is within acceptable limits, as micro-diameter tooling is highly sensitive to misalignment. Do not exceed the rated maximum drilling depth of 4.09 mm per pass without retracting to clear chips.