Guhring 9055250091300 Extra Length Carbide Drill Bit

Product Description

The GUHRING 9055250091300 is a solid carbide extra length drill bit designed for high-performance drilling in demanding industrial and metalworking applications. Built to Series 5525 standards and conforming to DIN 6537, it features a FIREX coating for extended tool life and a 140-degree drill point angle optimized for self-centering and facet point grinding. The bit runs coolant-through, supporting high-speed, deep-hole drilling operations with active chip and heat management. At 0.3594 inches in diameter, it is sized for precision bores in ferrous and non-ferrous materials. Licensed machinists and tooling specialists install and deploy this bit in CNC machining centers and drill press setups.

This extra length drill bit is suited for production and job shop environments where extended reach and tight diameter tolerances are required. Primary workpiece materials include cast iron and steel. Secondary applications cover aluminum, titanium alloy, and other non-ferrous and high-temperature alloys. The right-hand cutting direction, regular spiral flute, and web-thinned tapered web construction support efficient chip evacuation in both through-hole and deep-hole drilling scenarios.

Key Features

• Solid submicron carbide construction for rigidity and wear resistance in hard materials
• FIREX coating extends tool life in steel and cast iron applications
• Coolant-through design enables active cooling and chip flushing at depth
• 140-degree drill point angle with facet point grinding for self-centering entry
• Web-thinned tapered web reduces thrust load and improves chip flow
• Diameter tolerance of +0.006 to +0.021 mm for consistent bore sizing

Compatibility

Designed for use in CNC machining centers and precision drilling equipment accepting a 10 mm straight-cylindrical shank. Primary workpiece materials are cast iron and steel. Secondary compatible materials include aluminum and titanium alloy.

Installation Notes

Installation and use of this tooling should be performed by qualified machinists or tooling technicians familiar with CNC or manual drilling equipment. Ensure the spindle and tool holder are clean and free of runout before seating the straight-cylindrical shank. Verify coolant-through supply lines are connected and flowing before initiating deep-hole cycles. Do not exceed the maximum drilling depth of 101 mm without retracting to clear chips.