Guhring 9055110030000 Carbide Jobber Drill Bit 3mm

Product Description

The GUHRING 9055110030000 is a solid carbide jobber-length drill bit engineered for high-performance drilling in ferrous materials. Built to DIN 6537L standards, it features a 140-degree split point (SU point type) with web thinning for self-centering entry and reduced thrust. The 3 mm diameter shank and cutting edge are finished with FIREX coating, a titanium-based physical vapor deposition treatment that extends tool life in abrasive and high-temperature cutting conditions. The overall length is 66 mm, with a 28 mm flute length and a 36 mm straight-cylindrical shank measuring 0.2362 inches in diameter. Coolant-through capability is built in, making it compatible with internal coolant spindles for deep-hole and high-speed applications.

This drill bit is designed for machining cast iron and steel in production and job-shop environments. The Series 5511 geometry with a 5xD flute-to-diameter ratio and tapered web configuration makes it well suited for CNC machining centers, drill presses, and manual mills where accuracy and repeatability are required. The right-hand spiral flute promotes chip evacuation in through-hole and blind-hole applications. It is typically installed and used by machinists, tool-and-die makers, and maintenance technicians working in metal fabrication, automotive, aerospace, and general industrial settings.

Key Features

• Solid carbide submicron-grade construction for rigidity and wear resistance in ferrous materials
• FIREX coating extends tool life in cast iron and steel applications
• 140-degree SU split point with web thinning enables self-centering without a center punch
• Coolant-through design supports internal coolant delivery for improved chip flushing and heat management
• DIN 6537L and DIN 6535 compliant for dimensional interchangeability on standard toolholders
• Diameter tolerance of 0.002 to 0.012 mm ensures consistent hole quality

Compatibility

Designed for use in straight-cylindrical shank toolholders and drill chucks conforming to DIN 6535 standards. Primary workpiece materials are cast iron (ISO material code K) and steel (ISO material code P). Maximum recommended drilling depth is 23.50 mm (0.925 inches).

Installation Notes

Installation is performed by qualified machinists using a compatible DIN 6535 collet chuck or drill chuck rated for the 0.2362-inch shank diameter. Ensure the machine spindle is fully stopped and locked out before changing tooling. When using coolant-through capability, verify that coolant pressure and flow rate are within the machine spindle specifications before running. Avoid hand-grinding the cutting edge without proper carbide grinding wheels, as improper regrinding will damage the FIREX coating and alter point geometry.