Guhring 9055250039700 Extra Length Drill Bit Solid Carbide

Product Description

The GUHRING 9055250039700 is a solid carbide extra length drill bit engineered for high-performance drilling in demanding production and machining environments. It carries a 0.1563 inch diameter, a 140-degree drill point angle, and a FIREX coating for extended tool life under heat and abrasion. The two-flute spiral design, combined with a web-thinned RT100 U point geometry, promotes self-centering and efficient chip evacuation. With a flute-to-diameter ratio of 12xD and a maximum drilling depth of 2.285 inches, this bit is built for deep-hole work in materials that challenge standard-length tooling. Licensed machinists and CNC operators are the primary users.

This drill bit is suited for deep-hole drilling applications in cast iron and steel as primary workpiece materials. Aluminum and titanium alloys are listed as secondary compatible materials. The Series 5525 designation places it within a high-performance solid carbide drill family designed for facet point grinding and self-centering entry on difficult materials. Typical environments include CNC machining centers, drill presses, and precision metalworking operations where deep reach and consistent hole tolerance are required. The h7 shank diameter tolerance supports secure tool holding in standard collet and chuck systems.

Key Features

• Solid carbide construction with FIREX coating for heat and wear resistance
• 140-degree drill point angle with RT100 U point type for self-centering entry
• Web-thinned geometry promotes clean chip formation and reduced thrust force
• 12xD flute-to-diameter ratio supports drilling depths up to 2.285 inches
• Coolant-through design for effective chip flushing in deep holes
• Straight-cylindrical shank with h7 tolerance for precise tool-holder fit

Compatibility

Designed as an OEM-specification solid carbide extra length drill bit in GUHRING Series 5525, intended for use with standard straight-shank collets and chucks accepting a 6 mm shank diameter. Primary workpiece materials are cast iron and steel; secondary materials include aluminum and titanium alloys.

Installation Notes

Installation should be performed by qualified machinists following shop safety protocols. Secure the shank fully in a collet or drill chuck rated for the spindle speed appropriate to the workpiece material and bit diameter before initiating any cut. Verify coolant-through lines are clear and coolant flow is active before drilling into deep-hole applications. Inspect the cutting edges and FIREX coating for wear or chipping before each use and replace the bit if damage is observed.