Guhring 9055230107200 Cobalt Drill Bit 27/64 Inch 118 Deg

Product Description

The GUHRING 9055230107200 is a cobalt jobber length drill bit designed for productive metal drilling in demanding trade and industrial applications. Built to DIN 338 standards from M35 cobalt steel, this bit features a 118-degree four facet split point with web thinning for fast, self-centering starts and reduced thrust. The straight-cylindrical shank measures 27/64 inch (0.4219 inch decimal) and the overall length is 142 millimeters (approximately 5.59 inches). Right-hand spiral fluting with a regular helix and 5xD flute-to-diameter ratio promotes efficient chip evacuation. Bright uncoated finish suits a broad range of ferrous and non-ferrous workpiece materials.

This drill bit is sized at 27/64 inch and is suited for drilling aluminum, mild steel, stainless steel, and similar materials corresponding to primary workpiece material codes K, M, N, and P. The Series 5523 design targets professional machinists, maintenance technicians, fabricators, and HVAC and plumbing tradespeople who require a reliable, standard-length bit for bench drill presses, handheld drills, or CNC drilling operations. With a maximum drilling depth of approximately 3.068 inches (77.92 mm) and a 2-flute spiral configuration, it handles through-hole and blind-hole work in both production and field settings.

Key Features

• M35 cobalt steel construction for heat resistance and extended tool life in tough materials
• 118-degree four facet split point with web thinning for self-centering starts and lower thrust requirements
• DIN 338 standard jobber length with 5xD flute ratio for balanced rigidity and chip clearance
• Right-hand cut, regular spiral flute promotes efficient chip evacuation in both ferrous and non-ferrous materials
• Straight-cylindrical shank fits standard drill chucks without adapters
• Bright uncoated finish compatible with cutting fluids and coolant strategies for extended edge life

Compatibility

Designed as a DIN 338 jobber length replacement drill bit compatible with standard drill chucks accepting a 27/64 inch (10.72 mm) straight-cylindrical shank, suitable for use in handheld drills, bench drill presses, and CNC drilling setups across workpiece material groups K, M, N, and P.

Installation Notes

Installation and use should be performed by qualified machinists or trade professionals familiar with proper drill press or handheld drill operation. Secure the shank fully in the chuck and confirm concentricity before running at speed. Apply appropriate cutting fluid or coolant for the workpiece material to preserve edge life, particularly when drilling steel or stainless. Inspect the cutting edges for wear before each use and replace the bit if chipping or dulling is observed.