Guhring 9003010006600 Micro Drill Bit Wire 71 Cobalt

Product Description

The GUHRING 9003010006600 is a cobalt micro drill bit designed for precision drilling in demanding trade and industrial applications. Built to DIN 1899 standards, this wire gauge size 71 bit measures 0.026 inches (0.0260 decimal inch) in diameter with an overall length of 0.984 inches. The 118-degree faceted point geometry with web thinning reduces thrust and improves centering at entry. The bright, uncoated cobalt construction provides heat resistance and edge retention when drilling hard or abrasive materials. A straight-cylindrical shank and spiral flute design ensure consistent chip evacuation in tight-tolerance work.

This micro drill bit is suited for precision machining, toolroom work, and small-hole drilling in aluminum and titanium alloy workpieces. The Series 301 designation places it within a line engineered for high-speed drilling in non-ferrous and mixed-material applications. It is sized and built for use in CNC machining centers, drill presses, and hand-held precision drilling equipment where accurate hole diameter and minimal deflection are critical. Machinists, toolmakers, and production line technicians are the primary installers and users of this bit.

Key Features

• Wire gauge size 71 at 0.026 inches diameter for micro-precision drilling
• 118-degree faceted point angle with web thinning for reduced entry thrust
• Cobalt tool material for elevated heat and wear resistance versus standard HSS
• Spiral flute with tapered web configuration for efficient chip removal
• DIN 1899 specification for consistent dimensional standards
• Bright uncoated finish compatible with a wide range of cutting fluids and lubricants

Compatibility

Designed for drilling aluminum (material codes K, M, N, P) as the primary workpiece material and titanium alloy (material code S) as a secondary workpiece material. Suited for use in standard straight-shank micro drill chucks and collet systems accepting a 1.00 mm shank diameter.

Installation Notes

Micro drill bits of this size should be installed by qualified machinists or toolroom technicians familiar with small-diameter tooling. Secure the straight-cylindrical shank fully in the chuck or collet before use, and verify runout is within acceptable tolerance before drilling. Use appropriate cutting fluid or lubrication recommended for the workpiece material to extend tool life. Avoid applying side load or bending force, as drill bits at this diameter are susceptible to breakage under lateral stress.