Guhring 9055110079000 Carbide Jobber Drill Bit 7.9mm

Product Description

The GUHRING 9055110079000 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding production environments. Built to DIN 6537L standards, it features a 140-degree split-point (SU) tip geometry that promotes self-centering on entry, reducing the need for a center punch or pilot hole. The FIREX coating provides enhanced heat and wear resistance, extending tool life in abrasive or hard materials. With a 7.9 mm diameter, 2-flute spiral configuration, and a 5xD flute-to-diameter ratio, this bit is engineered for consistent chip evacuation and dimensional accuracy. Coolant-through capability makes it suitable for deep-hole and high-speed CNC applications.

This drill bit is suited for machining cast iron and steel workpieces in industrial and production settings. The straight-cylindrical shank at 8.00 mm diameter fits standard toolholders and collet chucks. With a maximum drilling depth of 41.15 mm and a flute length of 53.00 mm, it covers a wide range of through-hole and blind-hole operations. It is intended for use by machinists and CNC operators working with automated or manual drill presses, machining centers, and lathes where tight tolerances and consistent results are required.

Key Features

• Solid carbide submicron-grade material for hardness and wear resistance in ferrous materials
• FIREX coating reduces friction and heat buildup during high-speed drilling
• 140-degree SU point geometry enables self-centering without a pilot hole
• Coolant-through design supports high-feed and deep-hole drilling strategies
• Web-thinned, tapered web construction improves chip flow and reduces thrust forces
• Meets DIN 6535 and DIN 6537 L standards for dimensional consistency

Compatibility

Designed for use in cast iron and steel workpieces (material codes K and P) across the 7.00 mm to 8.00 mm diameter range, conforming to DIN 6537L specifications. Fits standard straight-cylindrical toolholders and collet systems accepting an 8.00 mm shank.

Installation Notes

Installation and operation should be performed by qualified machinists or CNC technicians familiar with carbide tooling. Power down and lock out the machine spindle before loading or changing the bit. Carbide tooling is brittle — avoid side-loading or using this bit in hammer or impact-mode applications. Confirm coolant-through lines are clear and pressure is set per machine specifications before initiating deep-hole cycles.