Guhring 9006590025000 Cobalt Stub Drill Bit 0.0984 in

Product Description

The GUHRING 9006590025000 is a cobalt stub-length drill bit designed for high-performance drilling in hard and difficult-to-machine materials. Built to DIN 1897 standards, this bit measures 0.0984 inches in diameter with an overall length of 1.693 inches and a flute length of 0.551 inches. The 130-degree split point with web thinning reduces thrust force and improves centering accuracy. With a parabolic flute design and parallel web configuration, it efficiently evacuates chips from the cut zone. The straight-cylindrical shank provides secure chuck grip. This is a heavy-duty grade tool suited for production and maintenance drilling applications.

This drill bit is rated for titanium alloy as its primary workpiece material, making it well suited for aerospace, medical, and precision manufacturing environments. The stub-length body provides added rigidity over jobber-length bits, reducing deflection in short-depth applications. Maximum drilling depth is 0.404 inches, consistent with a 3xD flute-to-diameter ratio. A licensed machinist or toolroom technician would be the typical installer. It conforms to DIN 1897 specification and is manufactured to a diameter tolerance of +0.000 to -0.014 mm.

Key Features

• Cobalt construction provides heat resistance for drilling hard alloys including titanium
• 130-degree point angle with web thinning reduces entry thrust and improves self-centering
• Parabolic flute geometry promotes efficient chip evacuation in deep cuts
• Stub-length body increases rigidity and reduces deflection compared to jobber-length bits
• Straight-cylindrical shank fits standard drill chucks and CNC toolholders
• Manufactured to DIN 1897 specification with heavy-duty grade rating

Compatibility

Designed as a DIN 1897-compliant stub-length drill bit suitable for use in manual drill presses, CNC machining centers, and production drilling fixtures that accept a straight-cylindrical shank in 0.0984-inch diameter.

Installation Notes

Installation and use should be performed by a qualified machinist or CNC operator. Secure the shank fully within the chuck or collet before operation and confirm runout is within acceptable limits. When drilling titanium or other work-hardening alloys, use appropriate cutting fluid and maintain consistent feed pressure to prevent work hardening at the entry point. Do not force the bit or exceed the rated maximum drilling depth of 0.404 inches per pass.