Guhring 9055230019800 Cobalt Jobber Drill Bit 5/64 in

Product Description

The GUHRING 9055230019800 is a cobalt jobber length drill bit designed for precision drilling in a range of metalworking and fabrication applications. Built to DIN 338 standards from M35 cobalt steel, this bit delivers reliable performance in demanding shop environments. It features a 118-degree four facet split point with web thinning for improved centering and reduced thrust on entry. The bright uncoated finish makes it well suited for applications where coating buildup or adhesion could be a concern. At 5/64 inch (0.0781 inch) diameter, it is sized for fine-detail work requiring consistent accuracy. Licensed tradespeople and skilled machinists are the primary installers of this tooling.

This drill bit is built for use in metalworking, light fabrication, and maintenance operations where small-diameter, precise holes are required. Its regular spiral flute geometry and straight cylindrical shank make it compatible with standard drill chucks and drill presses. Primary workpiece materials include aluminum, steel, and similar metals per material codes K, M, N, and P. The 5xD flute-to-diameter ratio supports efficient chip evacuation in short-depth holes. Overall length is 49 millimeters (approximately 1.93 inches), with a flute length of 24 millimeters (approximately 0.94 inches), suited to benchtop drilling machines and handheld drill drivers alike.

Key Features

• M35 cobalt steel construction for heat and wear resistance in metal drilling
• 118-degree four facet split point with web thinning for accurate self-starting entry
• DIN 338 standard jobber length for broad compatibility with standard chucks
• Regular spiral flute geometry promotes consistent chip evacuation
• Straight cylindrical shank fits standard drill chucks without adapters
• Bright uncoated finish; no coating adhesion concerns in aluminum or soft metal applications

Compatibility

Designed as a DIN 338 jobber length drill bit with a straight cylindrical shank, compatible with standard drill chucks sized to accept a 5/64 inch (1.98 millimeter) shank diameter. Suitable for drilling into aluminum, general steel, and similar workpiece materials per series 5523 application parameters.

Installation Notes

Installation is performed by machinists, maintenance technicians, or skilled tradespeople using a standard keyed or keyless drill chuck on a drill press or handheld power drill. Ensure the chuck is fully tightened and the workpiece is secured before drilling to prevent bit walking or breakage at this small diameter. Do not exceed the maximum drilling depth of 0.828 inch (21.03 millimeters) without withdrawing the bit to clear chips. Cutting fluid appropriate for the workpiece material is recommended to extend tool life and maintain hole quality.