Guhring 9006600006100 Micro Drill Bit Wire 73 Cobalt

Product Description

The GUHRING 9006600006100 is a micro drill bit engineered for precision drilling in tight-tolerance applications. Built from cobalt high-speed steel with a titanium nitride (TiN) coating, this bit handles demanding workpiece materials while maintaining edge life. It carries a wire gauge size of 73, equating to 0.0240 inches in diameter, and delivers a 118-degree faceted point angle with a web-thinned, tapered web configuration. Overall length is 0.984 inches. The spiral flute design promotes chip evacuation, and the straight-cylindrical shank seats securely in standard collets and drill chucks. Licensed machinists, toolmakers, and precision fabricators are the primary users of this bit.

This micro drill bit is suited for precision hole-making in aluminum, non-ferrous metals, and titanium alloys. The Series 660 design follows DIN 1899 specification, making it appropriate for CNC machining centers, manual drill presses, and high-speed spindle applications where small-diameter bore accuracy is critical. Maximum drilling depth reaches 0.130 inches (3.29 mm), and the flute length measures 4.20 mm, providing a 5xD flute-to-diameter ratio. It is sold individually but requires a minimum order quantity of 10 units.

Key Features

• Cobalt construction with TiN coating for extended tool life in hard and abrasive materials
• 118-degree faceted point with web thinning for reduced thrust and cleaner entry
• Wire size 73 (0.0240 inch diameter) for micro-precision bore applications
• Right-hand cut spiral flute promotes efficient chip removal
• Straight-cylindrical shank compatible with standard collets and drill chucks
• Conforms to DIN 1899 specification for consistent dimensional accuracy

Compatibility

Designed as an OEM-style replacement or direct-use micro drill bit for precision machining setups requiring wire gauge size 73 tooling per DIN 1899 in Series 660 configuration. Primary workpiece materials are aluminum and titanium alloy as indicated by material codes K, M, N, P, and S.

Installation Notes

Installation and use of micro drill bits should be performed by qualified machinists or toolroom technicians familiar with small-diameter tooling. Ensure the spindle and chuck or collet are clean and properly seated before tightening to prevent runout. Always power down and lock out the machine before changing tooling. Avoid side loading or lateral force on the bit, as micro-diameter tools are susceptible to breakage under off-axis stress.