Guhring 9006590090000 Cobalt Stub Drill Bit 0.3543 in

Product Description

The GUHRING 9006590090000 is a cobalt stub-length (screw machine length) drill bit engineered for demanding metal cutting applications. It features a 0.3543-inch diameter, a 130-degree split point, and a parabolic flute design that promotes efficient chip evacuation and reduced cutting resistance. The straight cylindrical shank provides secure chuck engagement. With a web-thinned, parallel web configuration and a heavy-duty cobalt construction, this bit is built for production environments where tool life and dimensional accuracy matter. It is sized to a DIN 1897 standard and carries a diameter tolerance of +0.000 to -0.022 mm.

This drill bit is designed for drilling titanium alloys and other difficult-to-machine metals where standard HSS tooling loses its edge prematurely. The Series 659 parabolic flute geometry supports deep-hole chip clearing in a compact stub-length format. The 3xD flute-to-diameter ratio and 1.0430-inch maximum drilling depth make it well suited to CNC machining centers, drill presses, and manual machines used in aerospace, precision fabrication, and industrial maintenance shops. Right-hand cut orientation is standard for conventional spindle rotation.

Key Features

• Cobalt construction for extended tool life in titanium alloy and hard metal drilling
• 130-degree point angle with web thinning reduces thrust and improves self-centering
• Parabolic flute geometry promotes fast, reliable chip evacuation
• Stub length (DIN 1897) format provides added rigidity over jobber-length bits
• Straight cylindrical shank fits standard drill chucks and collet holders
• Heavy-duty grade with diameter tolerance of +0.000 to -0.022 mm for precision work

Compatibility

Designed as an OEM-specification replacement or new-installation drill bit for use in standard drill chucks and collet systems accepting a 0.3543-inch straight cylindrical shank, conforming to DIN 1897 stub-length standards.

Installation Notes

This bit is installed and used by machinists, toolroom technicians, and precision fabricators. Before mounting, confirm the chuck or collet is clean and within rated capacity for the shank diameter. Use appropriate cutting fluid or coolant when drilling titanium alloys to manage heat and extend tool life. Do not exceed the recommended maximum drilling depth of 1.0430 inches without retracting to clear chips.