Guhring 9007300033000 Carbide Stub Drill Bit 0.1299 in

Product Description

The GUHRING 9007300033000 is a solid carbide stub-length (screw machine length) drill bit designed for precision drilling in metalworking and machining applications. Measuring 0.1299 inches (3.30 mm) in diameter with an overall length of 49.00 mm, this drill bit features a 118-degree faceted point angle and a web-thinned tip geometry that reduces thrust and improves chip evacuation. The bright uncoated finish suits general-purpose use without the added hardness of a coated variant. It is sized to DIN 6539 standards with an h8 diameter tolerance, making it a reliable choice for machinists and toolroom technicians who need repeatable hole quality.

This drill bit is suited for drilling aluminum and similar non-ferrous materials in production and job-shop environments. Its stub-length body provides increased rigidity compared to jobber-length bits, which helps maintain straightness in short-depth drilling operations. The straight-cylindrical shank fits standard drill chucks and collets used on CNC machining centers, drill presses, and manual mills. The two-flute spiral design handles chip clearance efficiently in the materials and depths for which it is rated, with a maximum drilling depth of 0.514 inches (13.05 mm) at a 3xD flute-to-diameter ratio.

Key Features

• Solid micrograin carbide construction for hardness and edge retention in non-ferrous machining
• 118-degree faceted point angle with web-thinned tip reduces entry thrust and improves centering
• Stub-length body increases rigidity and reduces deflection in short-depth holes
• Bright uncoated finish compatible with cutting fluids and coolant-flood setups
• DIN 6539 standard with h8 diameter tolerance for consistent, repeatable hole sizing
• Right-hand cut, two-flute spiral design for standard drilling operations

Compatibility

Designed for use in standard drill chucks and collets accepting a 3.30 mm straight-cylindrical shank. Suitable for general-purpose drilling in aluminum and other non-ferrous workpiece materials as specified by the manufacturer.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom technicians. Secure the shank fully in the drill chuck or collet before operation and verify runout is within acceptable tolerance for the application. Ensure the machine spindle is fully stopped and the machine is de-energized before changing or inspecting the bit. Do not exceed the rated maximum drilling depth of 0.514 inches per pass without retracting to clear chips.