Guhring 9003010003300 Micro Drill Bit 81 Cobalt 118 Point

Product Description

The GUHRING 9003010003300 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. Sized at wire gauge 81 (0.0130 inches), this bit features a 118-degree faceted point with web thinning on a tapered web configuration, which reduces entry force and improves centering at startup. The overall length is 0.984 inches with a flute length of 2.40 mm and a maximum drilling depth of 0.075 inches. Built to DIN 1899 specification, it is suited for use by machinists and tool-and-die professionals working in high-precision environments where tight tolerances and small-diameter accuracy are critical.

This micro drill bit is rated primarily for aluminum and secondarily for titanium alloys, making it a reliable choice for aerospace, medical device, and precision machining applications. The bright uncoated cobalt construction handles elevated cutting temperatures without coating delamination concerns. The straight-cylindrical shank with a 1.00 mm diameter seats cleanly in collet-style and drill press setups. Right-hand spiral flute geometry promotes efficient chip evacuation in blind and through-hole drilling at micro diameters. It is sold individually but requires a minimum order of 10 units per purchase.

Key Features

• Wire gauge 81 size, 0.0130 inch decimal equivalent for micro-diameter precision drilling
• 118-degree faceted point with web thinning and tapered web for reduced entry force and accurate centering
• Cobalt tool material provides heat resistance for drilling aluminum and titanium alloy workpieces
• Spiral flute, right-hand cut geometry supports efficient chip evacuation at small diameters
• Straight-cylindrical 1.00 mm shank compatible with standard collet and precision chuck setups
• Manufactured to DIN 1899 specification with diameter tolerance of +0.000 to -0.004 mm

Compatibility

Designed as an OEM-style precision drill bit for use in collet chucks and precision drill press setups where wire gauge 81 micro-diameter drilling is required. Primary workpiece material is aluminum; secondary workpiece material is titanium alloy.

Installation Notes

Micro drill bits at this diameter require a precision collet or chuck rated for small-shank tooling to prevent runout and bit breakage. Secure the workpiece firmly before drilling and use a drill press or CNC spindle rather than a handheld tool to maintain perpendicularity at micro diameters. Reduce feed rate and confirm spindle speed is appropriate for the workpiece material before drilling. Inspect the bit for wear or chipping before each use, as cobalt micro drills are susceptible to fracture if run at improper feed and speed combinations.