Guhring 9024630066000 Carbide Stub Drill Bit 0.2598in

Product Description

The GUHRING 9024630066000 is a solid carbide, stub-length (screw machine length) drill bit designed for precise, high-performance drilling in demanding shop and field applications. At 0.2598 inches (6.60 mm) in diameter, it features a 118-degree faceted drill point, a web-thinned tip for reduced thrust and cleaner entry, and a two-flute spiral configuration for efficient chip evacuation. The straight-cylindrical shank seats securely in standard drill chucks and collet holders. This bit is built to DIN 6539 standards and holds a tight diameter tolerance of +0.000 to -0.010 mm, making it a reliable choice where hole accuracy matters.

This bit is intended for right-hand cut drilling operations in aluminum and similar non-ferrous workpiece materials, though its K40-grade carbide construction and general-purpose performance rating make it serviceable across a range of applications. The stub-length body limits deflection and increases rigidity compared to jobber-length bits, making it well-suited for short-hole drilling on CNC machining centers, turret lathes, screw machines, and manual drill presses. Maximum drilling depth is 0.831 inches (21.10 mm), with a flute-to-diameter ratio of 3xD. Machinists, tool-and-die makers, and production shop technicians are the primary users.

Key Features

• Solid carbide construction (K40 material grade) for wear resistance and dimensional stability
• Web-thinned faceted point reduces entry thrust and improves centering
• 118-degree drill point angle suited for aluminum and general-purpose drilling
• Stub-length body minimizes deflection for tighter hole tolerances
• DIN 6539 standard compliance with diameter tolerance of +0.000 to -0.010 mm
• Straight-cylindrical shank compatible with standard drill chucks and ER collets

Compatibility

Designed as a DIN 6539 stub-length carbide drill bit for use in standard straight-shank drill chucks and collet systems on CNC machining centers, screw machines, turret lathes, and manual drill presses. Primary workpiece material listed by the manufacturer is aluminum.

Installation Notes

Installation and use should be performed by qualified machinists or tool-room technicians familiar with cutting tool setup. Ensure the machine spindle and workholding are powered down and fully stopped before inserting or removing the bit. Confirm shank seating depth and runout with a dial indicator before production drilling. Do not exceed the maximum drilling depth of 0.831 inches without pecking cycles to clear chips and avoid tool breakage.