Guhring 9003010009400 Cobalt Micro Drill Bit Wire 63

Product Description

The GUHRING 9003010009400 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. Built to DIN 1899 standards, this Series 301 bit features a 118-degree faceted point with web thinning on a tapered web configuration, which reduces thrust and improves centering on entry. The straight-cylindrical shank measures 1.50 mm in diameter, and the overall length is 0.984 inches. The bright, uncoated cobalt construction delivers heat resistance and hardness retention when cutting through demanding materials. Right-hand spiral fluting evacuates chips efficiently while maintaining hole quality in tight-tolerance work.

This micro drill bit is suited for precision machining operations in production and maintenance environments where small-diameter hole accuracy is critical. Its primary rated workpiece material is aluminum, with secondary suitability for titanium alloys. The 5xD flute-to-diameter ratio supports controlled drilling depth up to 0.181 inches (4.59 mm). Typical applications include instrument manufacturing, electronics fabrication, aerospace component drilling, and any trade or industrial setting requiring consistent, repeatable micro-bore results.

Key Features

• Cobalt tool material for elevated heat and wear resistance without a coating
• 118-degree faceted point with web thinning reduces entry thrust and improves self-centering
• Tapered web configuration for rigidity across the full flute length
• Right-hand spiral flute promotes efficient chip evacuation in blind and through holes
• Diameter tolerance held to +0.000 to -0.004 mm for close-tolerance hole requirements
• Manufactured to DIN 1899 specification for consistent dimensional conformance

Compatibility

Designed as an OEM-style replacement or direct-application micro drill bit for use in standard straight-shank drill chucks and collets accepting a 1.50 mm shank diameter, suitable for CNC machining centers, drill presses, and precision hand-held drilling equipment configured for micro-diameter tooling.

Installation Notes

Installation of micro drill bits should be performed by qualified machinists or tooling technicians familiar with small-diameter tooling practices. Secure the straight-cylindrical shank fully into a clean, properly sized collet or chuck before operation, and verify runout before committing to a production cycle. Avoid excessive feed pressure, which can snap tooling at this diameter. Always follow applicable machine safety lockout procedures when changing tooling.