Guhring 9003010010800 Micro Drill Bit 1.08 Mm Cobalt

Product Description

The GUHRING 9003010010800 is a cobalt micro drill bit designed for precision drilling in small-diameter applications. Built to DIN 1899 specifications, it measures 1.08 mm in diameter (0.0425 decimal inch) with a 25 mm overall length and a 7.60 mm flute length. The 118-degree faceted point and web-thinned, tapered web geometry reduce entry force and improve centering accuracy. The bright uncoated finish suits applications where coating buildup or heat retention would affect tolerances. This bit is installed and used by machinists, tool-and-die technicians, and precision fabricators working in CNC drilling and manual high-speed operations.

The 9003010010800 is rated for drilling into aluminum as its primary workpiece material, with titanium alloy as a secondary rated material. The straight-cylindrical shank at 1.50 mm diameter fits standard collet-style chucks used in CNC machining centers, drill presses, and precision manual drill units. The 5xD flute-to-diameter ratio and spiral flute design support chip evacuation in short, shallow holes with a maximum drilling depth of 5.98 mm (0.2350 decimal inch). Typical use cases include small-hole drilling in aerospace components, electronics housings, and precision mechanical assemblies.

Key Features

• Cobalt tool material for heat resistance and hardness in demanding workpiece materials
• 118-degree faceted point for accurate entry and reduced walking on hard surfaces
• Web-thinned, tapered web reduces thrust force and improves chip flow
• Bright uncoated finish maintains dimensional integrity at micro diameters
• Right-hand spiral flute supports standard spindle rotation and chip clearance
• DIN 1899 specification ensures dimensional consistency across the Series 301 product line

Compatibility

Designed for use in collet-style tool holders and precision drill chucks accepting a 1.50 mm straight-cylindrical shank. Rated for aluminum (material code K, M, N, P) and titanium alloy (material code S) workpieces per GUHRING Series 301 application guidelines.

Installation Notes

A licensed machinist or qualified tooling technician should confirm collet size and runout before seating this micro drill bit, as shank concentricity is critical at sub-2 mm diameters. Ensure the spindle and workpiece fixture are fully secured and the machine is at a complete stop before changing or inspecting the bit. Coolant-through is not supported on this model; use external coolant or cutting fluid appropriate for the workpiece material. Follow the machine manufacturer and applicable shop safety standards for high-speed micro-drilling operations.