Guhring 9055250043000 Extra Length Drill Bit Solid Carbide

Product Description

The GUHRING 9055250043000 is a solid carbide extra length drill bit engineered for high-performance drilling in demanding industrial and machining applications. Part of the Series 5525 lineup, this bit features a 4.30 mm (0.1693 inch) diameter with a FIREX coating, a 140-degree drill point angle, and a spiral flute configuration with web thinning for improved chip evacuation. The straight-cylindrical shank measures 0.2362 inches in diameter. Coolant-through capability supports deep-hole drilling while managing heat buildup. With a 12xD flute-to-diameter ratio, this tool is sized for reach in tight or deep bore situations. Licensed machinists, tool and die professionals, and CNC operators are the primary installers of this tooling.

This drill bit is suited for production and job-shop environments requiring consistent performance in cast iron and steel as primary workpiece materials. It also performs in aluminum and titanium alloys as secondary applications. The facet point grinding and self-centering point type make it appropriate for precision drilling where hole location accuracy matters. The 57.55 mm (2.266 inch) maximum drilling depth and 64.00 mm flute length accommodate through-hole and deep blind-hole operations without step drilling in many cases.

Key Features

• Solid submicron carbide construction for extended tool life in ferrous and non-ferrous materials
• FIREX coating provides thermal and wear resistance during high-speed cutting
• Coolant-through design channels coolant directly to the cutting edge for deep-hole applications
• 140-degree standard point with web thinning and facet point grinding for self-centering entry
• Right-hand spiral flute with tapered web configuration improves chip flow and core strength
• Conforms to DIN 6537 standard for extra length drill geometry

Compatibility

Designed as an OEM-style tooling solution for CNC machining centers, drill presses, and similar equipment accepting straight-cylindrical shank drill bits with a 0.2362 inch shank diameter. Primary workpiece material compatibility includes cast iron (material code K) and steel (material code P), with secondary compatibility for aluminum, titanium alloy, and other material codes H, M, N, and S.

Installation Notes

Installation should be performed by qualified machinists or tooling technicians familiar with CNC or manual drilling equipment. Confirm the machine spindle and chuck or collet are rated for the 0.2362 inch shank diameter before seating the bit. Ensure the machine is fully powered down and spindle is locked before changing tooling. Verify coolant-through lines are clear and properly pressurized when using the internal coolant feature to prevent heat-related tool failure.