Guhring 9003010011700 Cobalt Micro Drill Bit 1.17 Mm

Product Description

The GUHRING 9003010011700 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. Built to DIN 1899 standards, it features a 1.17 mm cutting diameter with a diameter tolerance of +0.000 to -0.004 mm, ensuring consistent hole quality in tight-tolerance work. The 118-degree faceted point with web thinning and a tapered web configuration reduces entry force and improves centering accuracy. The bright, uncoated cobalt construction provides heat resistance and edge retention well above standard high-speed steel. Overall length is 25 mm, with a 7.60 mm flute length and a 1.50 mm straight-cylindrical shank. This bit is sized for use in precision machining operations and is installed by machinists and tooling technicians.

This micro drill bit is rated for use in aluminum as its primary workpiece material, with titanium alloy listed as a secondary workpiece material. Its 5xD flute-to-diameter ratio and regular spiral flute geometry support chip evacuation in shallow-to-moderate depth holes, with a maximum drilling depth of 5.85 mm (0.2300 inches). The Series 301 designation places it within a standardized micro-drilling product family suited for precision component fabrication, electronics assembly fixtures, medical device components, and similar fine-tolerance machining environments.

Key Features

• Cobalt tool material for superior heat resistance and edge retention versus standard HSS
• 118-degree faceted point with web thinning for accurate entry and reduced thrust force
• Tapered web configuration supports rigidity in a 1.17 mm diameter
• Diameter tolerance of +0.000 to -0.004 mm for consistent, repeatable hole sizing
• DIN 1899 specification compliance for standardized micro-drill geometry
• Right-hand cut with regular spiral flute for efficient chip evacuation

Compatibility

Designed as an OEM-specification micro drill conforming to DIN 1899 Series 301 geometry. Primary workpiece material is aluminum (material codes K, M, N, P); secondary workpiece material is titanium alloy (material code S). Suitable for use in CNC machining centers, drill presses, and precision hand-held spindles accepting a 1.50 mm straight-cylindrical shank.

Installation Notes

Installation and use of micro drill bits in this diameter range should be performed by qualified machinists or tooling technicians familiar with small-diameter tooling practices. Secure the 1.50 mm straight-cylindrical shank fully and concentrically in a compatible collet or chuck to minimize runout, which is critical at this diameter. Ensure spindle and workpiece are properly fixtured before engaging the tool. Coolant-through is not supported on this bit; apply external coolant or cutting fluid appropriate to the workpiece material as needed.