Guhring 9055150099200 Carbide Jobber Drill Bit 25/64 in

Product Description

The GUHRING 9055150099200 is a solid carbide jobber-length drill bit designed for high-performance drilling in ferrous materials. Built to DIN 6537L standards, it features a 140-degree split point (SU point type) with web thinning for self-centering entry and reduced thrust. The bit carries a FIREX coating for heat and wear resistance. With an overall length of 103 mm and a 25/64-inch (0.3906-inch) cutting diameter, this is a production-grade tool suited for machinists, toolroom technicians, and maintenance professionals working on tight-tolerance applications.

This drill bit is rated for cast iron and steel workpiece materials, making it a practical choice for machine shops, fabrication operations, and industrial maintenance environments. The 5xD flute-to-diameter ratio provides a flute length of 61 mm, supporting deeper hole depths up to 46.12 mm (1.816 inches). The straight-cylindrical shank with a 10 mm shank diameter and 40 mm shank length fits standard drill chucks and collet holders without modification. It is sold individually and intended for use in CNC machining centers, drill presses, and hand-held power tools where carbide tooling is appropriate.

Key Features

• Solid carbide submicron-grade construction for rigidity and wear resistance in ferrous materials
• FIREX coating reduces heat buildup and extends tool life in steel and cast iron
• 140-degree SU split point with web thinning enables self-centering entry without a pilot hole
• Right-hand spiral flute geometry promotes efficient chip evacuation
• Conforms to DIN 6535 and DIN 6537L standards for consistent dimensional tolerances
• Diameter tolerance held to 0.006 to 0.021 mm for repeatable hole sizing

Compatibility

Designed as a DIN 6537L Series 5515 jobber-length drill bit compatible with standard straight-cylindrical chuck and collet systems accepting a 10 mm shank. Suitable for drilling cast iron and steel workpieces requiring a 25/64-inch hole diameter.

Installation Notes

Install in a properly sized drill chuck or collet holder, ensuring the shank is fully seated and securely clamped before operation. Confirm the machine spindle is at a complete stop before changing tooling. Follow the tool manufacturer and machine manufacturer guidelines for recommended speeds and feeds when drilling solid carbide tooling in ferrous materials. Inspect the cutting edge and FIREX coating for chipping or wear before each use, as carbide edges are brittle and sensitive to side loading or interrupted cuts.