Guhring 9038990019300 Micro Drill Bit 1.93mm Tialn

Product Description

The GUHRING 9038990019300 is a solid carbide micro drill bit designed for precision drilling in demanding industrial and machining applications. Built to Series 3899 specifications, this drill features a 140-degree faceted point angle and a TiAlN coating that extends tool life when cutting ferrous materials. The wire gauge size is 48, with a decimal inch diameter of 0.0760 inches and a metric diameter of 1.93 mm. Overall length is 38.00 mm, with a spiral flute geometry and a straight-cylindrical shank. A web-thinned design reduces cutting forces at entry. This tool is sized for precision work and is installed by machinists, toolroom technicians, and production drilling operators.

This micro drill bit is suited for precision drilling in cast iron and steel workpieces in both production and toolroom environments. The 5xD flute-to-diameter ratio and a maximum drilling depth of 9.11 mm (0.359 inches) make it appropriate for shallow to moderate-depth holes in tight-tolerance applications. The h7 diameter tolerance on the drill body supports accurate hole sizing in CNC machining centers, drill presses, and manual machine tools. The straight-cylindrical shank with a 3.00 mm shank diameter fits standard collet and chuck configurations.

Key Features

• 140-degree faceted point angle reduces walking and improves entry accuracy in cast iron and steel
• TiAlN coating increases surface hardness and heat resistance during high-speed cutting
• Web-thinned design lowers thrust force at drill entry
• h7 diameter tolerance supports tight-tolerance hole requirements
• Solid carbide construction in K40 material grade for rigidity in micro-diameter applications
• 5xD flute-to-diameter ratio with regular spiral type for efficient chip evacuation

Compatibility

Designed as a Series 3899 OEM-specification micro drill bit for use in standard straight-cylindrical collets and drill chucks accepting a 3.00 mm shank diameter. Primary workpiece materials are cast iron (K) and steel (P).

Installation Notes

Installation and use should be performed by qualified machinists or toolroom personnel familiar with CNC and manual drilling equipment. Ensure the machine spindle and toolholder are fully stopped and de-energized before inserting or changing the drill. Confirm collet or chuck clamping diameter matches the 3.00 mm shank before securing. Micro-diameter carbide tools are brittle — avoid side loading, interrupted cuts without appropriate feed reduction, and thermal shock from inconsistent coolant application.