Guhring 9055250111100 Extra Length Drill Bit 7/16 in

Product Description

The GUHRING 9055250111100 is a solid carbide extra length drill bit designed for high-performance drilling in demanding industrial and machining applications. Built to Series 5525 standards and finished with a FIREX coating, this bit delivers extended tool life in abrasive and hard materials. It features a 140-degree drill point angle with a standard point type, web-thinned and tapered web configuration for improved centering and chip evacuation, and a spiral regular flute with coolant-through capability. The straight-cylindrical shank and right-hand cutting direction make it compatible with standard drill chucks and CNC toolholding systems. Licensed machinists, tool and die technicians, and CNC operators are the primary users.

This drill bit is suited for production drilling in cast iron and steel as primary workpiece materials, with secondary capability in aluminum and titanium alloy. The 12xD flute-to-diameter ratio supports deep-hole drilling cycles where coolant-through delivery is critical for chip flushing and heat management. It is appropriate for both manual machining centers and CNC applications requiring a facet point grind and self-centering entry. Conformance to DIN 6537 ensures dimensional consistency expected in precision manufacturing environments.

Key Features

• FIREX coating for extended wear resistance in ferrous and non-ferrous materials
• Coolant-through design supports deep-hole drilling up to 133.00 mm maximum drilling depth
• 140-degree drill point angle with facet point grinding and self-centering geometry
• Web-thinned tapered web reduces thrust force at entry
• 12xD flute-by-diameter ratio for high-depth applications
• Conforms to DIN 6537 for dimensional and geometric consistency

Compatibility

Designed as an OEM-style replacement or direct-application solid carbide drill bit for CNC machining centers and drill presses requiring a straight-cylindrical shank tool in the 7/16 inch diameter class.

Installation Notes

Installation should be performed by qualified machinists or CNC setup technicians familiar with carbide tooling. Ensure the machine spindle and toolholder are clean and free of runout before securing the shank. Solid carbide tooling is brittle and should not be subjected to interrupted cuts or excessive side loads without verifying application suitability. Always verify coolant-through passages are clear and coolant pressure is within the machine and toolholder specifications before initiating a deep-hole cycle.