Guhring 9006590145000 Cobalt Stub Drill Bit 0.5709 in

Product Description

The GUHRING 9006590145000 is a cobalt screw machine length (stub) drill bit designed for drilling in titanium alloy and other demanding workpiece materials. Built to DIN 1897 standards, this 0.5709-inch (14.50 mm) diameter bit features a parabolic flute geometry and a 130-degree split point for aggressive chip evacuation and reduced walking on entry. The straight-cylindrical shank seats securely in standard drill chucks and CNC toolholders. At 4.37 inches overall length with a 2.2047-inch flute length, it fits compact setups where standard-length bits are too long. Heavy-duty cobalt construction handles the heat and hardness associated with aerospace-grade and high-strength alloy materials. Licensed machinists, tool-and-die technicians, and manufacturing floor operators are the primary users.

This stub-length drill bit is suited for production machining, job shop work, and maintenance applications where titanium alloy, stainless steel, and other hard metals are common. The shorter overall length improves rigidity and reduces deflection in high-feed drilling scenarios. The parabolic flute profile moves chips out of the hole efficiently, which is critical when drilling sticky or stringy alloys that load up conventional flute geometries. Maximum drilling depth is 1.348 inches (34.25 mm), making this appropriate for through-holes and moderate-depth blind holes in workpieces up to that depth.

Key Features

• 14.50 mm (0.5709 inches) diameter with a tolerance of +0.000 to -0.027 mm for controlled fit
• 130-degree standard point angle with web thinning for reduced thrust and cleaner entry
• Parabolic flute design promotes efficient chip removal in titanium and hard alloys
• Cobalt tool material resists heat buildup during high-speed or dry cutting operations
• Stub (screw machine) length improves rigidity and minimizes deflection
• Straight-cylindrical shank compatible with standard chucks and collet holders
• Conforms to DIN 1897 specification for consistent dimensional standards

Compatibility

Designed as a DIN 1897 stub-length drill bit for use in drill presses, CNC machining centers, and manual machine tools equipped with standard straight-shank toolholding. Primary workpiece material is titanium alloy; suitable for other hard or work-hardening materials where cobalt tooling is specified.

Installation Notes

Installation and use should be performed by qualified machinists or tool operators familiar with cutting tool setup and machine safety procedures. Secure the shank fully in the chuck or collet and verify runout before beginning a cut. Ensure the machine is at a full stop before changing or inspecting the bit. Follow shop-specific feeds and speeds for cobalt tooling in titanium alloy, and verify workpiece clamping is adequate before drilling.