Guhring 9007320042000 Jobber Drill Bit 4.2mm Carbide

Product Description

The GUHRING 9007320042000 is a jobber length drill bit engineered for precision drilling in aluminum and other non-ferrous materials. Built from solid carbide grade DK120, this bit delivers consistent performance in production and maintenance environments. It features a 118-degree faceted drill point with web thinning for reduced entry force and clean hole initiation. The bright, uncoated finish is well suited to non-ferrous applications where coating adhesion or heat buildup is not a primary concern. At 4.2 mm in diameter with a 2.953-inch overall length, this is a standard-reach tool for general-purpose drilling in light manufacturing, aerospace, and precision fabrication settings. Installation and use require no special tooling beyond a compatible collet or drill chuck.

This drill bit is designed for use in CNC machining centers, drill presses, and hand-held power tools where a straight-cylindrical shank is accepted. The Series 732 designation indicates a regular spiral, two-flute configuration with a 5xD flute-to-diameter ratio, providing adequate chip evacuation in typical aluminum and non-ferrous workpieces. The right-hand cut direction is standard for conventional drilling operations. This bit is appropriate for machinists, toolroom technicians, and precision manufacturing professionals working with aluminum (material code N) and similar materials.

Key Features

• Solid carbide construction, material grade DK120, for extended tool life in non-ferrous applications
• 118-degree faceted point with web thinning for reduced thrust and clean hole entry
• Two-flute regular spiral design with 5xD ratio for efficient chip removal
• Bright, uncoated finish optimized for aluminum and non-ferrous materials
• Straight-cylindrical shank compatible with standard collets and drill chucks
• Diameter tolerance of plus 0.000 to minus 0.012 mm for consistent hole accuracy

Compatibility

Designed as a general-purpose jobber length drill bit for use in any machine or hand tool accepting a 4.2 mm straight-cylindrical shank. Suitable for aluminum and other primary workpiece materials in the N material group classification.

Installation Notes

This bit should be installed by a qualified machinist or toolroom technician in a properly rated chuck or collet system. Ensure the machine spindle is fully stopped and the tool is securely seated before beginning any drilling operation. Do not exceed the recommended drilling depth of 43 mm (1.693 inches) for this tool length. Verify spindle speed and feed rate are appropriate for the workpiece material and bit diameter before initiating the cut.