Guhring 9006590010200 Cobalt Stub Drill Bit 0.04 in

Product Description

The GUHRING 9006590010200 is a cobalt stub-length (screw machine length) drill bit designed for precision drilling in demanding materials, including titanium alloy. Built to DIN 1897 standards, it features a 0.04-inch (wire size #60) diameter, a 130-degree standard point angle, and a web-thinned parallel web configuration that reduces thrust and improves chip evacuation. The parabolic two-flute geometry moves chips out of the hole efficiently, making it well-suited for short, precise holes in tough workpiece materials. This is a heavy-duty grade tool intended for professional machining environments.

This drill bit is engineered for applications where a short overall length is required to minimize deflection and maximize rigidity. With an overall length of approximately 1.02 inches (26 mm) and a flute length of approximately 0.24 inches (6 mm), it is ideal for tight-clearance setups, CNC machining centers, drill presses, and screw machine operations. The straight-cylindrical shank seats securely in standard chucks and collets. Primary workpiece material compatibility includes titanium alloy, where the cobalt construction provides the heat resistance and edge retention needed for extended tool life.

Key Features

• Cobalt construction with coated finish for heat resistance and extended tool life in hard materials
• 130-degree standard point angle with web-thinned parallel web for reduced entry thrust
• Parabolic two-flute design promotes efficient chip evacuation in deep and blind holes
• Stub (screw machine) length minimizes deflection and increases rigidity in close-tolerance setups
• Straight-cylindrical shank for compatibility with standard drill chucks and collets
• Conforms to DIN 1897 specification for consistent dimensional accuracy
• Diameter tolerance of +0.000 to -0.014 mm for precise hole sizing

Compatibility

Designed as a DIN 1897 stub-length drill bit in the GUHRING Series 659 for use in drilling titanium alloy and similarly demanding workpiece materials. Maximum drilling depth is 0.176 inches (4.47 mm).

Installation Notes

Installation and use of this drill bit should be performed by qualified machinists or tool-and-die professionals. Secure the straight-cylindrical shank firmly in a properly sized collet or drill chuck before operation, and verify runout is within acceptable tolerance before beginning a cut. Power down and de-energize the machine completely before changing or inspecting tooling. Do not exceed the recommended drilling depth of 0.176 inches for this stub-length geometry.