Guhring 9003010004700 Micro Drill Bit 0.0185in Cobalt

Product Description

The GUHRING 9003010004700 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. It measures 0.0185 inches in diameter with an overall length of 0.984 inches and features a 118-degree faceted point for accurate entry and reduced walking. The spiral flute geometry supports chip evacuation in shallow-depth operations, while the web-thinned, tapered web configuration reduces cutting resistance at the tip. Manufactured to DIN 1899 specification, this bit is suited for machinists and toolroom technicians who require consistent performance at sub-0.020-inch diameters. The bright, uncoated cobalt construction offers heat resistance without an applied coating.

This micro drill bit is designed for drilling aluminum as its primary workpiece material, with titanium alloy as a secondary application. The 5xD flute-to-diameter ratio and a maximum drilling depth of 0.091 inches make it appropriate for CNC machining centers, drill presses, and precision manual setups where shallow, tight-tolerance holes are required. Right-hand cut direction is standard. It is commonly used in aerospace component work, electronics manufacturing, and precision instrument fabrication where fine-feature drilling is routine.

Key Features

• 0.0185-inch diameter cobalt construction for sub-miniature drilling applications
• 118-degree faceted point with web thinning for precise entry and lower thrust force
• Spiral flute type with regular spiral for consistent chip removal in short-depth cuts
• DIN 1899 specification ensures dimensional conformance for toolroom and production use
• Diameter tolerance of +0.000 to -0.004 mm for tight-tolerance hole requirements
• Bright, uncoated finish compatible with cutting fluids used in aluminum and titanium alloy operations

Compatibility

Designed as an OEM-specification micro drill bit per DIN 1899 Series 301, suitable for use with standard straight-collet and precision chuck toolholding systems that accept a 1.00 mm straight-cylindrical shank diameter.

Installation Notes

Installation and use of this micro drill bit should be performed by a qualified machinist familiar with small-diameter tooling. Secure the straight-cylindrical shank in a precision collet or micro-chuck rated for the shank diameter to prevent runout. At diameters below 0.020 inches, feed rates and spindle speeds must be carefully controlled to avoid bit breakage. Always verify workpiece fixturing is rigid and that the spindle is fully stopped before changing tooling.