Guhring 9003010010700 Micro Drill Bit Size 58 Cobalt

Product Description

The GUHRING 9003010010700 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 58, a metric diameter of 1.07 mm (0.0421 inches decimal), and an overall length of 25 mm. The 118-degree faceted point and web-thinned, tapered web geometry reduce entry force and improve centering accuracy. The spiral flute with a 5xD flute-by-diameter ratio handles chip evacuation in shallow-to-moderate depth holes. Manufactured from cobalt high-speed steel with a bright, uncoated finish, this bit is suited for licensed machinists and tool-and-die professionals working in high-precision environments.

This drill bit is intended for use in precision machining operations where tight hole tolerances are required. Its primary designated workpiece material is aluminum, with secondary suitability for titanium alloys. The straight-cylindrical shank with a 1.50 mm shank diameter fits standard collet chucks and precision drill chucks used in CNC machining centers, drill presses, and high-speed spindles. Maximum drilling depth is 6.00 mm (0.236 inches). The DIN 1899 specification governs dimensional standards for this size class, making it a recognized industry-standard geometry for micro-drilling operations.

Key Features

• Cobalt construction provides heat resistance and edge retention in abrasive and work-hardening materials
• 118-degree faceted point with web thinning reduces thrust load and improves hole entry accuracy
• 1.07 mm cutting diameter with a tight tolerance of +0.000 to -0.004 mm for precision fitment
• Straight-cylindrical 1.50 mm shank for compatibility with standard collet and drill chuck systems
• Spiral flute design with 5xD ratio supports chip evacuation in aluminum and titanium alloy applications
• Bright, uncoated finish maintains dimensional consistency without coating thickness variables

Compatibility

Designed as an OEM-specification micro drill bit conforming to DIN 1899 for wire size 58 applications. Rated for aluminum (material code K, M, N, P) as primary workpiece material and titanium alloy (material code S) as secondary workpiece material. No coolant-through capability; intended for dry or externally lubricated drilling setups.

Installation Notes

Installation and use of this micro drill bit should be performed by qualified machinists familiar with high-speed precision drilling setups. Always secure the straight-cylindrical shank fully into the collet or chuck before operation, and verify runout with a dial indicator when tolerances are critical. Power down and de-energize the spindle completely before bit changes. Avoid side loading and do not exceed the rated maximum drilling depth of 6.00 mm to prevent bit deflection or breakage at this diameter.