Guhring 9006590010000 Cobalt Stub Drill Bit 0.0394 in

Product Description

The GUHRING 9006590010000 is a cobalt stub-length screw machine drill bit designed for high-performance drilling in demanding materials. Built to DIN 1897 standards, this right-hand-cut bit features a parabolic flute geometry and a web-thinned, parallel web configuration that improves chip evacuation and reduces thrust in tough workpieces. The 130-degree split point starts on contact without walking, making it well suited for precision hole placement. With a straight-cylindrical shank and an overall length of 1.024 inches, this bit installs directly into standard drill chucks and collet holders without adapters. It is a heavy-duty grade tool intended for professional metalworking and machining applications.

This drill bit is rated for use in titanium alloy and similarly demanding materials where standard high-speed steel bits wear prematurely. The stub-length body provides added rigidity compared to jobber-length bits, reducing deflection in short-reach drilling setups. With a 3xD flute-to-diameter ratio and a maximum drilling depth of 0.177 inches, it is well matched for shallow precision bores in CNC machining centers, drill presses, and hand-held power tools used in aerospace, medical, and industrial fabrication environments.

Key Features

• Cobalt construction provides heat resistance and extended tool life in hard and abrasive materials
• 130-degree point angle with web thinning reduces entry force and improves centering accuracy
• Parabolic flute design promotes efficient chip clearing and reduces heat buildup at the cutting edge
• Stub-length body increases rigidity and minimizes deflection in tight or shallow drilling applications
• Straight-cylindrical shank fits standard drill chucks and collet holders without modification
• Manufactured to DIN 1897 specification for consistent dimensional tolerances across the series

Compatibility

Designed as a Series 659 DIN 1897 stub-length drill bit for use in standard drill chucks and collet systems accepting a straight-cylindrical shank. Rated for titanium alloy as the primary workpiece material and suitable for other hard metals in professional machining environments.

Installation Notes

This bit should be installed by a qualified machinist or tooling technician familiar with cutting tool setup and speeds and feeds for cobalt tooling in hard materials. Ensure the drill chuck or collet is fully seated and tightened before operation, and verify spindle speed is appropriate for the workpiece material and hole diameter. Inspect the cutting edges for wear or chipping before each use. Do not exceed the rated maximum drilling depth of 0.177 inches per the tool geometry.