Guhring 9055110142900 Carbide Jobber Drill Bit 9/16 in

Product Description

The GUHRING 9055110142900 is a solid carbide jobber-length drill bit designed for high-performance drilling in demanding industrial and metalworking applications. Built to DIN 6537L standards, this bit features a 9/16 inch (0.5625 inch) diameter, a 140-degree split-point (SU) tip, and a FIREX coating for extended tool life under high heat and abrasion. The straight-cylindrical shank measures 0.6299 inches in diameter. Coolant-through design supports internal coolant delivery, making it well suited for machining cells and CNC setups where thermal management is critical. Installation and setup are typically performed by machinists and tool-and-die professionals.

This drill bit is built for cutting cast iron and steel workpieces in production and job-shop environments. The web-thinned, tapered-web geometry reduces entry force and improves self-centering behavior, minimizing the need for a center punch or pilot hole. With a flute-to-diameter ratio of 5xD and a maximum drilling depth of 2.424 inches (61.57 mm), it handles deep-hole operations within its class. The regular spiral flute pattern promotes consistent chip evacuation in both through-hole and blind-hole applications.

Key Features

• FIREX coating improves wear resistance and heat dissipation during high-speed cutting
• 140-degree SU split-point tip provides self-centering entry without a pilot hole
• Coolant-through construction supports internal coolant delivery for deep-hole drilling
• Web-thinned, tapered-web design reduces thrust force and improves chip flow
• Submicron solid carbide grade delivers rigidity and edge retention in ferrous materials
• Conforms to DIN 6535 and DIN 6537 L standards for consistent dimensional tolerancing

Compatibility

Rated for primary use in cast iron and steel workpieces (material codes K and P). Diameter tolerance of 0.007 to 0.025 mm suits precision bore requirements within the 0.5000 to 0.6500 inch drill bit size range per DIN 6537 L specification.

Installation Notes

This bit is intended for use by qualified machinists in CNC machining centers, drill presses, or manual milling equipment with appropriate collet or chuck holding rated for straight-cylindrical shanks. Verify that the machine spindle and coolant-through toolholder are compatible with the 0.6299-inch shank diameter before mounting. Power down and lock out the machine before changing or inspecting tooling. Do not exceed manufacturer-recommended feed and speed parameters for the workpiece material to avoid premature edge chipping.