Guhring 9005150048500 Screw Machine Drill Bit 0.191 in

Product Description

The GUHRING 9005150048500 is a stub-length (screw machine length) twist drill bit designed for high-productivity metal drilling applications. Built from powdered metal and coated for extended wear resistance, it features a parabolic flute geometry with a fast spiral that improves chip evacuation and reduces heat buildup in the cut zone. The 130-degree point angle and cone relief point type make it well-suited for initiating cuts on curved or angled surfaces without a center punch. At 2.4409 inches overall length and 0.191 inches diameter, this bit is sized for short-reach applications where rigidity and accuracy matter. Machinists, tool and die shops, and maintenance mechanics working with cast iron and steel will find this a reliable production drilling tool.

This drill bit is intended for use in ferrous metal applications, specifically cast iron and steel, in both production and job-shop environments. The stub-length body reduces deflection, making it appropriate for drill press, CNC, and turret lathe applications where a compact cutting tool is required. The straight-cylindrical shank provides broad compatibility with standard drill chucks and collet systems. The web-thinned geometry reduces entry force, which is particularly useful when drilling thicker stock or when running higher feed rates.

Key Features

• 0.191 inches diameter with h8 tolerance for close-fit precision holes
• Parabolic fast-spiral flute promotes efficient chip removal in deep-hole and interrupted cuts
• 130-degree cone relief point reduces walking and improves self-centering on flat and contoured surfaces
• Powdered metal construction with coating provides enhanced hardness and abrasion resistance over standard HSS
• Web-thinned design lowers thrust force requirements and extends tool life in steel and cast iron
• Manufactured to DIN 1897 standard, Series 515, for consistent dimensional quality

Compatibility

Designed for drilling cast iron and steel workpieces. Straight-cylindrical shank fits standard Jacobs-style drill chucks and ER collet systems accepting 0.191 inch shank tooling. Conforms to DIN 1897 stub-length specifications.

Installation Notes

Install securely in a calibrated drill chuck or collet system before use; verify runout is within acceptable limits for the application. Ensure the workpiece is properly fixtured and the machine is set to an appropriate spindle speed and feed rate for the material being drilled. Wear appropriate PPE including eye protection when operating drilling equipment. Never exceed the maximum recommended drilling depth of 0.737 inches per the manufacturer specification without a peck-drilling cycle to clear chips.