Guhring 9024630127000 Carbide Stub Drill Bit 0.5 in

Product Description

The GUHRING 9024630127000 is a solid carbide stub-length (screw machine length) drill bit designed for precision hole-making in metalworking and machining applications. Built to DIN 6539 standards, it features a 118-degree faceted point angle and a web-thinned tip geometry that reduces thrust and improves chip evacuation at entry. The 0.5 inch diameter, straight-cylindrical shank fits standard drill chucks and collet holders. With an overall length of 4.016 inches and a flute length of 2.008 inches, this bit is suited for CNC machining centers, drill presses, and manual lathes where stub rigidity is required. Installed by machinists and tool-and-die professionals.

This drill bit is rated for general-purpose drilling with aluminum listed as the primary workpiece material, though its solid carbide K40 grade construction makes it capable across a range of non-ferrous and light ferrous materials at appropriate speeds and feeds. The stub length reduces deflection compared to jobber-length bits, making it well suited for close-tolerance hole entry and shallow-depth drilling operations. Maximum drilling depth is 1.258 inches. The 3xD flute-to-diameter ratio and regular spiral flute type support consistent chip flow during through and blind hole applications in production environments.

Key Features

• Solid carbide K40 grade construction for rigidity and wear resistance
• 118-degree faceted point with web thinning to reduce entry thrust
• Stub (screw machine) length at 4.016 inches overall for improved drilling rigidity
• 2-flute right-hand cut with regular spiral for efficient chip evacuation
• Straight-cylindrical shank compatible with standard chucks and collet holders
• Meets DIN 6539 specification with diameter tolerance of +0.000 to -0.010 mm

Compatibility

Designed as a general-purpose stub drill bit per DIN 6539 specification, compatible with standard drill chucks and collet systems accepting a 12.70 mm (0.5 inch) straight shank. Primary workpiece material is aluminum per manufacturer specification.

Installation Notes

Installation and setup should be performed by qualified machinists familiar with cutting tool handling and machine operation. Ensure the machine spindle is fully stopped and locked out before mounting or removing the bit. Secure the shank fully in the chuck or collet to the recommended grip depth to prevent pullout under load. Coolant-through is not supported on this tool, so apply external coolant or cutting fluid appropriate for the workpiece material when required.