Guhring 9006580028700 Cobalt Jobber Drill Bit No.33

Product Description

The GUHRING 9006580028700 is a cobalt jobber-length drill bit in wire gauge size No. 33, with a decimal diameter of 0.113 inches. It features a 130-degree drill point angle and a titanium nitride (TiN) coating over the cobalt substrate, which improves surface hardness and extends tool life in demanding drilling applications. The parabolic flute geometry promotes efficient chip evacuation, reducing heat buildup during operation. This bit is manufactured to DIN 338 standards and falls within GUHRING Series 658, a high-performance line designed for production and maintenance drilling in metalworking environments. It is installed and used by machinists, tool-and-die technicians, and maintenance mechanics.

This drill bit is intended for drilling cast iron and steel workpieces, covering a broad range of ferrous metal applications in both production shop and field maintenance settings. The TiN coating and cobalt base material make it appropriate for harder steels where standard high-speed steel bits lose edge life prematurely. The straight-cylindrical shank allows it to seat in standard drill chucks, drill presses, and CNC machining center tool holders without adapters. It is suited to light-duty CNC, benchtop drill press, and hand-drill operations where consistent hole quality in metal is required.

Key Features

• Wire gauge No. 33 diameter (0.113 inches) with a straight-cylindrical shank of equal diameter for secure chuck grip
• 130-degree split point angle reduces walking on entry and lowers thrust force in ferrous metals
• Parabolic flute profile with web thinning promotes rapid chip clearance and reduces recutting
• Titanium nitride (TiN) coating over cobalt construction increases surface hardness and extends cutting life
• Manufactured to DIN 338 specification for consistent dimensional tolerance (-0.014 to 0.000 mm on diameter)
• Maximum drilling depth of 1.13 inches (28.70 mm) with a 5xD flute-to-diameter ratio

Compatibility

Designed as an OEM-specification replacement or direct-use drill bit for applications in cast iron and steel (workpiece material codes K and P) where a DIN 338 jobber-length cobalt bit in wire gauge No. 33 is specified.

Installation Notes

This bit is installed by machinists or maintenance technicians in a standard three-jaw drill chuck or collet rated for the 0.113-inch shank diameter. Ensure the drilling machine is powered off and locked out before changing tooling. Use appropriate cutting fluid or lubrication for steel workpieces to manage heat and extend bit life. Do not exceed the maximum drilling depth of 1.13 inches without retracting to clear chips.