Guhring 9055200140000 Cobalt Stub Drill Bit 14mm

Product Description

The GUHRING 9055200140000 is a cobalt stub-length (screw machine length) drill bit designed for high-performance metal drilling in professional machining environments. Built to DIN 1897 standards, it measures 14.00 mm (0.5512 inches) in diameter with an overall length of 107.00 mm (4.21 inches) and a flute length of 54.00 mm (2.13 inches). The 118-degree four-facet split point geometry reduces walking at entry and minimizes thrust force. The web-thinned, tapered web construction improves chip evacuation and cutting efficiency. This bit is installed and used by machinists, toolroom technicians, and skilled trade professionals running drill presses, CNC machines, or hand-held power tools in production and maintenance settings.

The 9055200140000 is suited for drilling aluminum and similar non-ferrous and ferrous workpiece materials in applications where a compact, rigid drill profile is required. The stub-length body provides greater rigidity than jobber-length bits, making it well-suited for short-hole drilling, fixture work, and setups where overhang must be minimized. The Series 5520 designation places this bit within a standardized cobalt drill family conforming to DIN 1897 dimensional specifications. Maximum drilling depth is 33.00 mm (1.299 inches), and the flute-to-diameter ratio is 3xD.

Key Features

• 14.00 mm (0.5512 inches) diameter with diameter tolerance of +0.000 to -0.027 mm
• 118-degree four-facet split point with web thinning for reduced entry thrust
• Cobalt tool material with coated finish for elevated heat and wear resistance
• Stub (screw machine) length body for increased rigidity and reduced deflection
• Right-hand cut, regular spiral flute, straight-cylindrical shank
• Conforms to DIN 1897 standard; Series 5520

Compatibility

Designed as an OEM-style replacement and standard production drill bit for use in any drilling application requiring a DIN 1897 stub-length cobalt drill in the 13.50 to 17.00 mm (0.5000 to 0.6000 inch) diameter range.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or trade professionals familiar with drill press, lathe, or CNC spindle tooling. Ensure the machine spindle and chuck or collet are fully powered down and locked out before changing tooling. Verify shank diameter compatibility with the holding device before securing the bit. Follow applicable shop safety standards and machine manufacturer guidelines for speed and feed selection based on workpiece material.