Guhring 9006220099200 Cobalt Jobber Drill Bit 25/64 in

Product Description

The GUHRING 9006220099200 is a cobalt jobber length drill bit designed for high-performance drilling in metal and non-ferrous materials. Built to DIN 338 standards, this bit features a 25/64 inch (0.3906 inch) diameter, a 130-degree drill point angle, and a parabolic flute geometry that improves chip evacuation and reduces heat buildup during deep drilling operations. The bright uncoated finish maintains dimensional integrity on the cutting edges. It is intended for use by machinists, maintenance technicians, and metalworking professionals who require consistent, accurate holes in production or field environments.

This drill bit is suited for drilling aluminum and a range of ferrous and non-ferrous workpiece materials, as indicated by the K, N, and P material codes. The straight-cylindrical shank seats securely in standard drill chucks. With an overall length of 5.25 inches and a flute length of 3.438 inches, the Series 622 geometry provides a 5xD flute-to-diameter ratio appropriate for through-hole and moderate-depth drilling applications in shop or on-site conditions.

Key Features

• Cobalt construction for improved heat resistance and edge retention in metalworking
• 130-degree drill point angle with web-thinned, tapered web for reduced thrust and easier starts
• Parabolic flute design promotes efficient chip removal and reduces clogging
• Bright uncoated finish for compatibility with a wide range of cutting fluids
• Straight-cylindrical shank fits standard drill chucks without adapters
• Conforms to DIN 338 specification for consistent dimensional tolerances

Compatibility

Designed as an OEM-style replacement or direct-use jobber length drill bit compatible with standard 3-jaw drill chucks and driver systems accepting a straight-cylindrical shank in the 25/64 inch diameter range. Primary workpiece material compatibility includes aluminum and general-purpose ferrous and non-ferrous metals per K, N, and P material classifications.

Installation Notes

Installation and use should be performed by qualified machinists or metalworking technicians familiar with rotary cutting tools and applicable shop safety procedures. Secure the shank fully in the chuck and verify runout before beginning a drilling operation. Always apply appropriate cutting fluid for the workpiece material and operate at manufacturer-recommended speeds and feeds for cobalt tooling. Inspect the cutting edges for wear or chipping before each use and replace the bit if damage is observed.