Guhring 9006600002500 Micro Drill Bit Size 87 Cobalt

Product Description

The GUHRING 9006600002500 is a cobalt micro drill bit designed for precision drilling in demanding production and toolroom environments. Built to DIN 1899 standards, it carries a wire gauge size of 87, which corresponds to a decimal diameter of 0.0098 inches. The 118-degree faceted point with web thinning and a tapered web configuration promotes accurate hole entry and reduces thrust when drilling small-diameter holes. A TiN coating extends cutting-edge life in high-cycle applications. At 0.984 inches overall length with a 1.00 mm straight-cylindrical shank, this bit is suited for use in precision chucks, collets, and micro-drill spindles. Licensed machinists, tool-and-die makers, and CNC setup technicians are the primary users.

This micro drill bit is rated primarily for aluminum (material codes K, M, N, P) and secondarily for titanium alloy (material code S). It is well suited for small-hole drilling operations in aerospace components, precision instrument housings, electronic enclosures, and similar tight-tolerance workpieces. The spiral flute geometry supports chip evacuation in shallow-to-moderate drilling depths. Maximum drilling depth is 0.060 inches (1.53 mm), consistent with its 5xD flute-by-diameter ratio. Right-hand cut direction is standard for conventional CNC and manual drill press setups.

Key Features

• Wire gauge size 87 with 0.0098-inch decimal diameter for micro-hole applications
• 118-degree faceted drill point with web thinning reduces entry thrust and improves centering
• Cobalt tool material provides heat resistance for hard and abrasive workpiece materials
• TiN coating extends tool life and reduces built-up edge in aluminum and titanium alloy
• Spiral flute with tapered web configuration promotes consistent chip flow
• Diameter tolerance of +0.000 to -0.004 mm supports close-tolerance hole requirements
• Conforms to DIN 1899 specification for micro drills

Compatibility

Designed as an OEM-style micro drill bit conforming to DIN 1899 for use with standard straight-cylindrical 1.00 mm shank collets, precision chucks, and micro-drill spindles compatible with wire gauge size 87 tooling.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians familiar with micro-drill setups. Secure the shank fully in a precision collet or chuck before operating to prevent runout at this diameter. Always reduce spindle speed and feed rate incrementally when setting up a new micro-drill application, and verify chuck runout with an indicator before production drilling. Do not exceed the rated maximum drilling depth of 0.060 inches without retracting to clear chips.