Guhring 9006580028000 Cobalt Jobber Drill Bit 2.8mm

Product Description

The GUHRING 9006580028000 is a cobalt jobber-length drill bit with a titanium nitride (TiN) coating, designed for high-performance drilling in demanding production and maintenance environments. The bit measures 2.8 mm (0.1102 inches) in diameter with a 130-degree split point and a parabolic flute geometry. Overall length is 2-13/32 inches, and the straight-cylindrical shank matches the drill diameter at 0.1102 inches. It carries a web-thinned, tapered-web construction that reduces entry force and improves chip evacuation. Licensed machinists, tool-and-die shops, and industrial maintenance technicians are the typical users of this bit.

This drill bit is rated for use in cast iron and steel workpieces, making it a practical choice for ferrous-metal applications in machine shops, fabrication facilities, and maintenance operations. The TiN coating extends cutting-edge life in abrasive materials, and the parabolic flute design supports efficient chip removal at moderate to aggressive feed rates. It conforms to DIN 338 standards, placing it within a globally recognized dimension and tolerance class. The Series 658 designation identifies it within the GUHRING product line for this flute-to-diameter ratio of 5xD.

Key Features

• Cobalt substrate with titanium nitride (TiN) coating for extended tool life in ferrous metals
• 130-degree point angle with web-thinned, tapered-web construction for reduced entry force
• Parabolic flute geometry promotes efficient chip evacuation at higher feed rates
• Right-hand cut, straight-cylindrical shank for use in standard drill chucks and collets
• Diameter tolerance of -0.014 to 0.000 mm for controlled-fit hole applications
• Conforms to DIN 338 specification; GUHRING Series 658

Compatibility

Designed for drilling cast iron and steel workpieces. Fits any standard drill chuck or collet accepting a 0.1102-inch straight-cylindrical shank. Conforms to DIN 338 dimensional standards, making it interchangeable with other DIN 338 jobber-length drill bits of equivalent diameter.

Installation Notes

Installation and use should be performed by qualified machinists or maintenance technicians familiar with rotating cutting tools. Secure the shank fully in a properly sized chuck or collet before operation, and verify spindle alignment to prevent bit deflection. Do not exceed the recommended drilling depth of 1.13 inches without retracting to clear chips. Always power down and lock out the machine before changing or inspecting the bit.