Guhring 9007300053000 Stub Drill Bit 5.30mm Carbide

Product Description

The GUHRING 9007300053000 is a stub-length (screw machine length) solid carbide drill bit in the Series 730 line, designed for precision drilling in metalworking and machining applications. It features a 5.30 mm diameter, a 118-degree faceted point angle, and a bright/uncoated finish. The micrograin carbide construction delivers hardness and edge retention well suited to short-cycle, high-repetition drilling. The web-thinned point reduces entry force and helps center the bit at the start of the cut. This bit is typically installed and operated by machinists, toolroom technicians, and CNC operators working on production or maintenance machining tasks.

This drill bit is suited for general-purpose drilling in aluminum as its primary workpiece material, though the solid carbide construction also handles a range of non-ferrous and ferrous materials in appropriate conditions. The stub length format provides added rigidity over jobber-length bits, making it a preferred choice in drill presses, CNC machining centers, and screw machines where minimizing deflection is critical. The straight-cylindrical shank allows direct chuck or collet mounting in standard toolholding systems.

Key Features

• 5.30 mm diameter with h8 tolerance for precise, consistent hole sizing
• 118-degree faceted point angle with web thinning for reduced entry force and improved self-centering
• Solid micrograin carbide construction for superior hardness and wear resistance
• Stub length format (62 mm OAL) provides increased rigidity and reduced deflection vs. jobber-length bits
• Bright/uncoated finish compatible with a range of cutting fluids and dry-cutting setups
• Regular spiral flute with 2-flute configuration for efficient chip evacuation
• Conforms to DIN 6539 standard

Compatibility

Designed as a general-purpose stub-length drill bit per DIN 6539, compatible with standard straight-bore chucks and collets accepting a 5.30 mm straight-cylindrical shank in drill presses, CNC machining centers, and screw machines.

Installation Notes

Installation and operation should be performed by qualified machinists or toolroom technicians familiar with rotating cutting tool safety. Ensure the machine spindle is fully stopped and power is isolated before mounting or removing the bit from the chuck or collet. Secure the straight-cylindrical shank fully within the holder to the manufacturer-recommended engagement depth to prevent pullout under load. Do not exceed the recommended maximum drilling depth of 18.05 mm for this stub-length configuration without retracting to clear chips.