Guhring 9003010010200 Micro Drill Bit Wire 60 Cobalt

Product Description

The GUHRING 9003010010200 is a cobalt micro drill bit in the Series 301 line, designed for precision drilling in small-diameter applications. It carries a wire size designation of 60, equivalent to 1.02 mm (0.0402 inches) in diameter, with an overall length of 25 mm (0.984 inches). The 118-degree faceted point angle and spiral flute geometry support accurate entry and efficient chip evacuation. A web-thinned, tapered web configuration reduces thrust force at the point, which is especially important in controlled micro-drilling operations. This bit is intended for use by machinists, tool and die makers, and precision fabricators working in production or job-shop environments.

This drill bit is rated primarily for aluminum (material codes K, M, N, P) and secondarily for titanium alloys (material code S). The straight-cylindrical shank at 1.50 mm diameter fits standard micro chuck collets and drill chucks sized for that shank. The right-hand cutting direction, regular spiral flute, and DIN 1899 specification make this bit appropriate for CNC machining centers, drill presses, and precision hand-held drilling fixtures where repeatability and tight tolerances are required. The flute length is 6.80 mm, supporting a maximum drilling depth of 5.27 mm (0.207 inches) per the 5xD flute-to-diameter ratio.

Key Features

• Wire size 60 diameter: 1.02 mm (0.0402 inches) with a tolerance of +0.000 to -0.004 mm
• 118-degree faceted point angle for accurate entry and reduced walking
• Web-thinned, tapered web reduces thrust force in micro-drilling applications
• Cobalt tool material provides heat resistance and edge retention in harder workpiece materials
• Bright/uncoated finish suits applications where coating interaction with the workpiece is a concern
• Conforms to DIN 1899 specification for consistent geometry and interchangeability

Compatibility

Designed as an OEM-style replacement or standard production micro drill bit for applications requiring a wire size 60, straight-shank cobalt drill conforming to DIN 1899. Primary workpiece materials are aluminum alloys; secondary application covers titanium alloys.

Installation Notes

Installation is performed by machinists and precision tool operators. Secure the straight-cylindrical shank fully into a compatible micro chuck or collet rated for 1.50 mm shank diameters before operation. Ensure the drilling fixture or spindle is at a complete stop before changing or inspecting the bit. Do not exceed the rated maximum drilling depth of 5.27 mm in a single pass without clearing chips to prevent bit deflection or breakage at this diameter.