Guhring 9007300014000 Stub Drill Bit 0.055 in Solid Carbide

Product Description

The GUHRING 9007300014000 is a stub-length (screw machine length) solid carbide drill bit designed for precision drilling in tight-clearance applications. Ground to a 118-degree faceted point with a web-thinned tip, this bit delivers clean entry and reduced thrust force in soft to medium-hardness materials. The two-flute spiral configuration and bright uncoated finish make it well suited for aluminum and similarly machinable workpieces. At 0.055 inches (wire size No. 54) in diameter, it holds a diameter tolerance of h8, supporting repeatable hole quality in production environments. Right-hand cut with a straight cylindrical shank, it seats securely in standard drill chucks and collet holders.

This drill bit fits general-purpose machining operations where a compact stub-length tool is required to minimize deflection and maximize rigidity. The 3xD flute-to-diameter ratio and 9.00 mm flute length support maximum drilling depths up to 0.272 inches (6.90 mm). It is used in CNC machining centers, drill presses, and manual machines across metalworking, fabrication, and precision manufacturing shops. The micrograin carbide grade sustains cutting edge integrity during repetitive production runs on aluminum, non-ferrous metals, and similar materials.

Key Features

• Solid micrograin carbide construction for edge retention and dimensional stability
• 118-degree faceted point with web thinning for reduced entry thrust and self-centering action
• Bright uncoated finish compatible with a wide range of cutting fluids and dry cutting setups
• h8 diameter tolerance for consistent, repeatable hole sizing
• Stub length design minimizes deflection in tight workpiece clearances
• Conforms to DIN 6539 standard for dimensional and geometric consistency

Compatibility

Designed as a general-purpose stub-length carbide drill bit per DIN 6539, suited for use with standard straight-shank drill chucks and collet systems accepting a 1.40 mm shank diameter; primary workpiece material rating is aluminum and comparable non-ferrous alloys.

Installation Notes

Installation and use of small-diameter carbide drill bits should be performed by qualified machinists familiar with proper chuck or collet seating procedures. Ensure the machine spindle is fully stopped and all motion has ceased before inserting or removing the bit. Carbide is brittle relative to HSS tooling and is susceptible to chipping from side loads or interrupted cuts; avoid flexing the shank during setup. Verify spindle speed and feed rate are appropriate for the workpiece material and bit diameter before beginning the drilling operation.