Guhring 9006590030000 Stub Drill Bit 0.1181in Cobalt

Product Description

The GUHRING 9006590030000 is a stub-length (screw machine length) cobalt drill bit engineered for demanding hole-making in titanium alloy and other hard, work-hardening materials. Built to DIN 1897 standards, it features a 130-degree split point with web thinning for self-centering entry and reduced thrust. The parabolic flute geometry evacuates chips efficiently in deep cuts, while the straight-cylindrical shank seats cleanly in standard chucks or collet holders. At 0.1181 inches in diameter, this two-flute bit is sized for precision work where tight tolerances and hole quality matter. Machinists and tool-and-die technicians working in aerospace, industrial fabrication, and maintenance environments reach for this series when standard HSS tooling loses edge life prematurely.

The 9006590030000 belongs to GUHRING Series 659, a heavy-duty stub drill line designed primarily for titanium alloy but also suitable for other tough non-ferrous and ferrous materials that accelerate tool wear. The stub-length body keeps deflection low, making it a practical choice for CNC machining centers, drill presses, and manual machines where rigidity and hole position accuracy are priorities. The 3xD flute-to-diameter ratio and 0.630-inch flute length accommodate holes up to 0.453 inches deep in a single pass without pecking in most applications.

Key Features

• 130-degree drill point angle with web thinning for reduced entry thrust and self-centering performance
• Parabolic flute geometry promotes fast, clean chip evacuation in titanium alloy and hard materials
• Cobalt construction provides elevated heat resistance and extended edge life versus standard HSS
• Stub-length body minimizes deflection for improved hole location accuracy
• Straight-cylindrical shank compatible with standard drill chucks and collet systems
• Manufactured to DIN 1897 specification for consistent dimensional accuracy

Compatibility

Designed as an OEM-grade stub drill for use in standard drill chucks and collet holders accepting a straight-cylindrical shank; primary workpiece material is titanium alloy per manufacturer specification.

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tooling technicians familiar with cutting tool setup and speeds-and-feeds for cobalt tooling. Secure the shank fully in the chuck or collet before operation and verify runout is within acceptable limits for the application. Always use appropriate cutting fluid or coolant compatible with titanium alloy machining to maximize tool life, even though this bit does not feature through-coolant capability. Inspect the cutting edges before each use and replace the bit when chipping or wear is observed to maintain hole tolerance.