Guhring 9006580066000 Cobalt Drill Bit 6.6 Mm Tin

Product Description

The GUHRING 9006580066000 is a cobalt jobber-length drill bit designed for demanding metal drilling applications where heat and wear resistance are critical. It carries a Titanium Nitride (TiN) coating over a cobalt steel substrate, extending tool life compared to standard high-speed steel bits. The drill is ground to a 130-degree point angle with a web-thinned, tapered web configuration for reduced thrust and cleaner entry. A parabolic flute geometry promotes efficient chip evacuation during deep-hole drilling. Overall length is 101 millimeters, with a straight-cylindrical shank measuring 0.2598 inches in diameter. The flute length runs 2-15/32 inches. Licensed machinists, tool-and-die workers, and maintenance technicians are the primary users of this drill.

This drill bit is suited for production and maintenance drilling in ferrous metals, stainless steel, cast iron, and other hard materials where cobalt-grade tooling is specified. It follows the DIN 338 standard, which governs jobber-length twist drills common across European and North American manufacturing and fabrication shops. Right-hand cutting geometry is standard for conventional drill press, CNC, or hand-drill applications. The 6.6 mm diameter falls within the 6.00 to 7.00 mm size range and converts to 0.2598 decimal inches, making it a close fit to a 17/64-inch nominal dimension. This bit ships individually but is subject to a minimum order quantity of 10 units.

Key Features

• Cobalt steel construction with Titanium Nitride (TiN) coating for extended heat and wear resistance
• 130-degree point angle reduces walking and improves chip formation on hard materials
• Parabolic flute geometry promotes fast chip evacuation and reduces heat buildup in deep holes
• Web-thinned, tapered web lowers drilling thrust and extends machine spindle life
• Straight-cylindrical shank fits standard drill chucks without adapters
• Manufactured to DIN 338 specification for consistent dimensional accuracy

Compatibility

Designed as a DIN 338 jobber-length twist drill for use in conventional drill presses, CNC machining centers, and portable hand drills equipped with standard straight-shank chucks accepting up to 0.2598-inch shank diameters. Suitable for ferrous and non-ferrous metal drilling where cobalt-grade tooling is specified. No coolant-through capability; external coolant or cutting fluid recommended for prolonged use in hard materials.

Installation Notes

Secure the straight-cylindrical shank firmly in a properly sized drill chuck before use; a loose chuck grip can cause runout and premature coating wear. Always power down and lock out the machine spindle before inserting or removing the drill bit. Apply appropriate cutting fluid or coolant externally when drilling ferrous metals to manage heat and extend tool life. Do not exceed the drill press or machine manufacturer's recommended feed rate and spindle speed for the workpiece material and this diameter.