Guhring 9055250110000 Extra Length Drill Bit Solid Carbide

Product Description

The GUHRING 9055250110000 is a solid carbide extra length drill bit designed for high-performance drilling in ferrous and non-ferrous materials. Built to Series 5525 specifications, it features a 11.00 mm (0.4331 inches) cutting diameter, a 140-degree drill point angle, and a FIREX coating for extended tool life in demanding applications. The overall length is 204.00 mm with a flute length of 156.00 mm, giving it a 12xD flute-by-diameter ratio suited for deep-hole work. Coolant-through capability supports chip evacuation and heat management. Licensed HVAC technicians, machinists, and industrial maintenance professionals working with CNC or manual equipment rely on this bit for consistent hole quality in tight-tolerance applications.

This bit is rated for primary use in cast iron and steel (ISO material codes K and P). Secondary workpiece materials include aluminum and titanium alloy (ISO codes H, M, N, and S). The web-thinned, tapered web configuration and self-centering facet point make it appropriate for precision work where a pilot hole is not always practical. It is well suited for production drilling environments where tool rigidity and coating durability reduce cycle times and tool changes.

Key Features

• Solid carbide submicron-grade construction for high rigidity and wear resistance
• FIREX coating extends service life in cast iron, steel, aluminum, and titanium alloy
• 140-degree split point with facet grind for self-centering entry and reduced thrust
• Coolant-through design channels fluid directly to the cutting edge for deep-hole drilling
• Web-thinned tapered web reduces cutting force and improves chip flow
• Right-hand cutting, spiral flute, straight-cylindrical shank for standard tool holders

Compatibility

Designed as an OEM-style replacement or direct application drill bit conforming to DIN 6537 standards, with a 0.4724-inch straight-cylindrical shank compatible with standard drill chucks and collet holders sized for that shank diameter.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or maintenance professionals familiar with CNC or manual drilling equipment. Before mounting or changing tooling, ensure the machine spindle is fully de-energized and at a complete stop. Confirm the tool holder or collet is clean and properly torqued according to the machine manufacturer specifications before running. Coolant-through tooling requires a compatible through-spindle coolant system; verify coolant pressure and flow rate match the tool and material requirements before beginning a drilling cycle.