Guhring 9006600008000 Micro Drill Bit 0.0315 in Cobalt

Product Description

The GUHRING 9006600008000 is a cobalt micro drill bit designed for precision drilling in small-diameter applications where tight tolerances and tool rigidity are critical. Built to DIN 1899 specification, this bit measures 0.0315 inches in diameter with an overall length of 0.984 inches and a 118-degree faceted point angle. The TiN coating reduces friction and extends tool life during high-speed operations. The web-thinned, tapered web construction reduces thrust force at entry, making it well suited for difficult-to-drill materials. Licensed tradespeople and machinists working in tight-tolerance environments will find this bit reliable for consistent results.

This micro drill bit is engineered for use in precision metalworking applications including drilling aluminum and titanium alloy components. The 5xD flute-to-diameter ratio and spiral flute design support chip evacuation in shallow holes up to a maximum drilling depth of 0.161 inches. It is commonly used in CNC machining centers, drill presses, and precision hand-held setups where micro-diameter accuracy is required. The straight-cylindrical shank with a 1.50 mm shank diameter seats securely in standard collets and chucks.

Key Features

• Cobalt construction with TiN coating for extended wear resistance in ferrous and non-ferrous materials
• 118-degree faceted point with web thinning reduces entry thrust and improves centering
• Tapered web configuration supports rigidity at micro diameters
• Right-hand cut, regular spiral flute promotes efficient chip evacuation
• Meets DIN 1899 specification for micro drill geometry and dimensional consistency
• Diameter tolerance held to +0.000 to -0.004 mm for precision fitment

Compatibility

Designed as an OEM-style micro drill for use with standard collet chucks and drill presses accepting a 1.50 mm straight-cylindrical shank. Rated for primary workpiece materials aluminum and titanium alloy per material codes K, M, N, P, and S.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with micro-diameter tooling. Secure the shank fully in the collet or chuck and verify runout before beginning a drilling cycle. Always power down the machine and lock out energy sources before changing tooling. Micro drill bits are brittle at small diameters — avoid side loading, interrupted cuts without proper feed control, and manual flex during operation.