Guhring 9006590024900 Cobalt Screw Machine Drill Bit

Product Description

The GUHRING 9006590024900 is a cobalt screw machine length drill bit engineered for demanding metal cutting applications. Built to DIN 1897 standards, this stub-length bit features a 0.098-inch (wire size 40) diameter with a 130-degree point angle optimized for initiating cuts in hard and abrasive materials. The parabolic flute geometry promotes efficient chip evacuation, while the web-thinned, parallel-web construction reduces thrust requirements at entry. With an overall length of 43.00 mm and a flute length of 14.00 mm, this bit is sized for use in screw machine setups and short-reach drilling operations. It is intended for installation and use by machinists and metalworking tradespeople working with titanium alloys and similar hard metals.

This bit is suited for production drilling in CNC screw machines, drill presses, and manual machine tool setups where short overall length improves rigidity and reduces deflection. The primary design target material is titanium alloy, though the heavy-duty cobalt grade also performs in stainless steel, high-temperature alloys, and other work-hardening metals. A straight-cylindrical shank seats directly into standard drill chucks and collets without adapters. Maximum drilling depth is rated at 0.404 inches (10.27 mm), making it appropriate for shallow-to-moderate depth holes in a production environment.

Key Features

• Cobalt construction, heavy-duty grade — resists heat buildup in hard and work-hardening alloys
• 130-degree point angle for positive engagement in titanium alloy and similar materials
• Parabolic flute profile with web thinning for improved chip flow and reduced thrust
• Stub-length (screw machine) body improves rigidity and minimizes deflection in short-reach setups
• Straight-cylindrical shank fits standard drill chucks and collets without adapters
• Manufactured to DIN 1897 specification for consistent dimensional tolerances

Compatibility

Designed as an OEM-grade replacement or direct-use drill bit for screw machine and production drilling setups requiring a wire size 40 (0.098-inch diameter) cobalt stub drill conforming to DIN 1897.

Installation Notes

This bit is installed by machinists and tool-and-die tradespeople in drill press, CNC, or screw machine spindles. Ensure the machine is fully de-energized and the spindle is locked before changing tooling. Seat the straight-cylindrical shank fully into the chuck or collet and verify concentricity before beginning a cut. Coolant-through is not supported on this bit; apply external cutting fluid appropriate for titanium alloy when drilling that material to manage heat.