Guhring 9006590016100 Cobalt Stub Drill Bit Wire 52

Product Description

The GUHRING 9006590016100 is a cobalt screw machine length (stub) drill bit designed for high-performance drilling in demanding materials. Built to DIN 1897 standards, this heavy-duty bit features a 130-degree drill point angle and a parabolic flute geometry with web thinning for improved chip evacuation and reduced thrust. At 0.0635 inches (wire size 52) in diameter, it is sized for precision work in tight tolerances. The straight-cylindrical shank seats securely in standard drill chucks. This bit is a professional-grade tool suited for machinists, tool-and-die shops, and industrial maintenance technicians working with hard or abrasive stock materials.

This stub-length drill bit is engineered primarily for titanium alloy workpieces, where cobalt construction provides the heat resistance and edge retention needed to maintain cutting performance. The shortened stub length increases rigidity and reduces deflection, making it well suited for close-tolerance drilling operations on CNC machines, manual drill presses, and screw machines. The parabolic flute profile promotes efficient chip clearing in deep-hole applications up to its maximum drilling depth. A 3xD flute-to-diameter ratio supports controlled chip flow without clogging.

Key Features

• Cobalt construction rated as heavy-duty grade for hard and abrasive materials including titanium alloy
• 130-degree drill point angle for aggressive penetration and reduced walking on hard surfaces
• Parabolic flute design with web thinning improves chip evacuation and lowers feed force
• Stub (screw machine) length increases rigidity and minimizes deflection in precision drilling
• Straight-cylindrical shank fits standard drill chucks without adapters
• Built to DIN 1897 specification for consistent dimensional accuracy
• Diameter tolerance of +0.000 to -0.014 mm for controlled fit in close-tolerance applications

Compatibility

Designed as a DIN 1897 stub-length drill bit for use in standard drill chucks and collet systems accepting a straight-cylindrical shank at 0.0635 inches diameter. Primary workpiece material rated for titanium alloy; also applicable to other hard metals within the heavy-duty grade classification.

Installation Notes

Installation should be performed by a qualified machinist or maintenance technician familiar with cutting tool setup and machine operation. Ensure the spindle is fully stopped and the machine is locked out before changing or seating the bit in the chuck or collet. Use appropriate cutting fluid or coolant compatible with titanium alloy to manage heat buildup during drilling. Do not exceed the recommended maximum drilling depth of 0.2990 inches per the manufacturer geometry without a peck-drilling cycle to clear chips.