Guhring 9055190115100 Cobalt Jobber Drill 29/64 in

Product Description

The GUHRING 9055190115100 is a cobalt jobber-length drill bit designed for high-performance drilling in ferrous and hard materials. Built to DIN 338 standards, this bit features a 118-degree, 4-facet point with web thinning for improved centering and reduced thrust. The M35 cobalt steel construction is finished with a Titanium Nitride (TiN) coating that increases surface hardness and extends tool life in abrasive applications. At 5.59 inches overall length with a 3.70-inch flute, it delivers solid reach for standard depth drilling. This is a professional-grade tool installed by machinists, maintenance mechanics, and metalworking trades.

This drill bit is rated for primary use in steel, stainless steel, and cast iron. The straight cylindrical shank accepts standard drill chucks without adapters. The regular spiral flute and tapered web geometry promote efficient chip evacuation in both manual and CNC drilling operations. At 29/64 inch diameter with a matched shank, it fits directly into common drill press and handheld drill setups. The Series 5519 belongs to a family of GUHRING general-purpose cobalt drills built to DIN 338, suited to job-shop and production environments where consistent tolerance is required.

Key Features

• M35 cobalt steel construction for heat resistance in hard and abrasive materials
• TiN coating increases surface hardness and reduces friction during cutting
• 118-degree 4-facet point with web thinning for accurate self-starting entry
• Right-hand cut, regular spiral flute for effective chip removal
• Diameter tolerance held to +0.000 to -0.027 mm for consistent hole sizing
• Coolant-through design is not required, simplifying setup in standard environments

Compatibility

Designed as a DIN 338 jobber-length drill for use in steel, stainless steel, and cast iron workpieces. The 29/64-inch straight shank fits standard three-jaw drill chucks used in drill presses, hand drills, and CNC machining centers.

Installation Notes

This tool is installed and operated by machinists and metalworking technicians. Secure the shank fully in the chuck and verify runout before drilling. Use appropriate cutting fluid or coolant when drilling stainless steel or cast iron to prevent work hardening and premature edge wear. Never exceed the rated maximum drilling depth of 3.02 inches in a single pass without clearing chips.