Guhring 9007300080300 Carbide Stub Drill Bit 0.3161in

Product Description

The GUHRING 9007300080300 is a solid micrograin carbide stub-length (screw machine length) drill bit sized at 0.3161 inches (Letter O) in diameter with a 118-degree faceted point angle. Built to DIN 6539 standards, it features a web-thinned tip and a regular spiral flute configuration for consistent chip evacuation. The straight-cylindrical shank measures 0.3161 inches in diameter, making it compatible with standard drill chucks and collet holders. Designed as a general-purpose cutting tool, this bit is suited for metalworking operations with a primary focus on aluminum and similar non-ferrous workpiece materials. Licensed machinists and toolroom technicians are the typical end users.

This drill bit is intended for screw machine, CNC machining center, and manual drill press applications where a compact stub-length tool is required for rigidity and reduced runout. The 3xD flute-to-diameter ratio and 37.00 mm flute length support shallow-to-medium hole depths up to 0.9830 inches. Its bright uncoated finish makes it straightforward to inspect for wear. General-purpose performance suits production environments processing aluminum, soft metals, and plastics where high-speed steel tooling is not preferred.

Key Features

• Solid micrograin carbide construction for wear resistance in non-ferrous and general-purpose cutting
• 118-degree faceted point with web thinning for reduced thrust and improved centering
• Stub-length (screw machine) body at 3.1102 inches overall for maximum rigidity
• Right-hand cut, regular spiral flute with 2-flute geometry for efficient chip clearing
• Straight-cylindrical shank at 0.3161 inches diameter fits standard chucks and collets
• Manufactured to DIN 6539 with h8 diameter tolerance for consistent fit and interchangeability

Compatibility

Designed as an OEM-style general-purpose stub-length carbide drill bit per DIN 6539 specification, suitable for use in standard drill chucks, ER collet systems, and screw machine spindles accepting a 0.3161-inch straight-cylindrical shank.

Installation Notes

Installation and tool changes must be performed with the machine in a full-stop, locked-out, and de-energized state per applicable machine tool safety procedures. Secure the shank fully within the chuck or collet to the recommended engagement depth before operation. Solid carbide tooling is brittle — avoid side loading, interrupted cuts without proper feed rate adjustment, or dropping the tool on hard surfaces. Coolant-through is not supported on this bit; apply external coolant or cutting fluid as required by the workpiece material and shop practice.