Guhring 9055200083000 Cobalt Stub Drill Bit 0.3268 in

Product Description

The GUHRING 9055200083000 is a cobalt stub-length drill bit designed for high-speed drilling in demanding shop and field applications. Built to DIN 1897 standards, this Series 5520 bit measures 8.30 mm (0.3268 inches) in diameter with an overall length of 79.00 mm (3.11 inches) and a flute length of 37.00 mm. The 118-degree four-facet split point geometry reduces walking and improves chip evacuation. Web thinning and a tapered web configuration lower thrust requirements during entry. This bit is sized for use in screw machine setups, CNC drill presses, and production drilling environments where stub-length rigidity reduces deflection.

This drill bit is suited for production and maintenance drilling in aluminum and similar non-ferrous materials. The straight-cylindrical shank seats cleanly in standard drill chucks and collet holders. With a maximum drilling depth of 0.967 inches (24.55 mm) and a 3xD flute-to-diameter ratio, it performs well in shallow-to-moderate depth holes common in fixture work, part fabrication, and equipment repair. Machinists, toolroom technicians, and maintenance mechanics are the primary installers.

Key Features

• Cobalt tool material for elevated heat resistance and extended tool life in hard or abrasive materials
• 118-degree four-facet split point reduces thrust force and minimizes drill walk on entry
• Web-thinned tapered web lowers cutting resistance and improves chip flow
• Stub-length (screw machine length) body increases rigidity and reduces deflection
• Right-hand spiral flute with regular helix for consistent chip evacuation
• Meets DIN 1897 specification for dimensional and geometric accuracy

Compatibility

Designed as an OEM-style replacement stub-length drill bit for use in standard drill chucks and collet holders accepting an 8.30 mm straight-cylindrical shank, consistent with Series 5520 tooling applications.

Installation Notes

Installation is performed by machinists or maintenance technicians using standard drill chuck or collet toolholding equipment. Ensure the shank is fully seated and the chuck or collet is torqued to the machine specification before operation. Inspect the cutting edges for wear or chipping before each use. Follow applicable shop safety procedures and machine guarding requirements when operating rotating tooling.