Guhring 9006590015900 Cobalt Stub Drill Bit 1/16 in

Product Description

The GUHRING 9006590015900 is a cobalt stub-length (screw machine length) drill bit designed for high-performance drilling in hard and abrasive materials. Built to DIN 1897 standards, it features a 0.0625 inch (1/16 inch) diameter, a 130-degree split point, and a parabolic flute geometry that promotes fast chip evacuation and reduced heat buildup. The web-thinned, parallel-web construction lowers entry resistance in tough workpiece materials. Right-hand cut with a straight-cylindrical shank, this bit is suited for use in CNC machining centers, drill presses, and hand-held power tools where precise, clean holes are required in challenging alloys.

This bit is rated for primary use in titanium alloy workpieces, making it a practical choice for aerospace, medical device, and precision manufacturing applications. The stub-length (Series 659) body provides added rigidity over jobber-length bits, reducing deflection when drilling short, accurate holes. A maximum drilling depth of 0.300 inch (7.62 mm) and a 3xD flute-to-diameter ratio keep the tool stable and efficient in production environments. Licensed machinists, tool-and-die makers, and CNC operators working with titanium or similar hard alloys are the primary users of this drill bit.

Key Features

• Cobalt tool material for extended heat and wear resistance in hard alloys
• 130-degree point angle reduces thrust and improves centering on hard materials
• Parabolic flute design accelerates chip removal and lowers cutting temperatures
• Web-thinned, parallel-web construction reduces entry force
• Stub-length body increases rigidity and minimizes bit deflection
• Conforms to DIN 1897 specification for consistent dimensional accuracy

Compatibility

Designed as an OEM-specification stub-length drill bit per DIN 1897, suitable for use in standard straight-shank drill chucks on CNC machining centers, drill presses, and pneumatic or electric hand drills where a 0.0625 inch straight-cylindrical shank is accepted. Primary workpiece material is titanium alloy.

Installation Notes

Installation and use should be performed by qualified machinists or tooling professionals familiar with cutting tool safety protocols. Ensure the drill chuck is fully tightened and the workpiece is securely fixtured before operation. Always wear appropriate eye protection and follow applicable OSHA machine-guarding requirements. Do not exceed the rated maximum drilling depth of 0.300 inch per pass without retracting to clear chips.