Guhring 9006050006100 Cobalt Jobber Drill No 73

Product Description

The GUHRING 9006050006100 is a cobalt jobber-length drill bit in M35 grade cobalt steel, designed for drilling small-diameter holes in difficult-to-machine materials. It carries a No. 73 wire gauge size with a decimal diameter of 0.0240 inches and features a 130-degree split point with web thinning for self-centering entry without a center punch. The spiral flute geometry and right-hand cutting direction are optimized for consistent chip evacuation in tough alloys. At 26.00 mm overall length, this is a compact, precision drill built for high-performance applications where standard HSS tooling falls short.

This drill is sized for precision work in titanium alloys and other high-strength materials classified under material grade M35 cobalt. It is well suited for aerospace, medical device, and general metalworking applications where tight tolerances and clean entry holes are required. With a maximum drilling depth of 7.09 mm and a 5xD flute-to-diameter ratio, it is intended for shallow to moderate-depth drilling operations. It conforms to DIN 338 standards, making it compatible with tooling setups that require metric specification compliance. Machinists and toolroom technicians working with small wire-size drills in production or maintenance settings will find this series appropriate for their requirements.

Key Features

• M35 cobalt steel construction for heat resistance and wear life in hard and abrasive materials
• 130-degree split point with web thinning for self-centering, reduced thrust force drilling
• Bright/uncoated finish suitable for use with cutting fluids on titanium and stainless alloys
• Right-hand spiral flute with regular helix for reliable chip clearance in short-flute applications
• Straight-cylindrical shank compatible with standard drill chucks and collet holders
• DIN 338 specification conformance for consistent dimensional standards

Compatibility

Designed as a DIN 338-compliant jobber drill for use in standard drill chucks and collet systems accepting a 0.61 mm straight-cylindrical shank, suited for CNC machining centers, drill presses, and hand-held power tools configured for small wire-size tooling.

Installation Notes

Installation and use should be performed by a qualified machinist or toolroom technician familiar with small-diameter drill bits. Ensure the spindle and workholding are fully secured before beginning any drilling operation, and confirm spindle runout is within acceptable limits to avoid breakage of this small-diameter tool. Apply an appropriate cutting fluid for the workpiece material, particularly when drilling titanium or stainless steel. Avoid excessive feed pressure, as small wire-size drills are susceptible to breakage under lateral loading.