Accupro A-6120073R Micro Drill Bit 0.73mm Solid Carbide

Product Description

The ACCUPRO A-6120073R is a solid carbide micro drill bit designed for high-precision small-diameter drilling applications. The bit measures 0.73 mm (0.0287 inches) in diameter with a 120-degree standard point angle and a spiral flute configuration for efficient chip evacuation. The overall length is 30 mm with a flute length of 3.80 mm. The straight-cylindrical shank measures 1.50 mm in diameter, making it compatible with standard micro drill chucks and collet holders. The bright, uncoated carbide construction offers rigidity and dimensional accuracy in tight-tolerance work where coatings could alter cutting geometry.

This micro drill bit is suited for precision machining operations in electronics manufacturing, medical device fabrication, instrument work, and other applications requiring small-diameter hole generation. It is typically used by machinists and tooling specialists working on CNC machining centers, drill presses, or manual precision equipment. Right-hand cutting direction and a regular spiral type make it a standard-workflow choice for through-hole and blind-hole drilling in ferrous and non-ferrous substrates.

Key Features

• 0.73 mm (0.0287 inches) cutting diameter for micro-scale hole generation
• 120-degree standard point angle for accurate self-centering entry
• Solid carbide construction provides rigidity and wear resistance in precision applications
• Bright, uncoated finish maintains true cutting geometry at micro dimensions
• Spiral flute design promotes chip evacuation in small-diameter bores
• 1.50 mm straight-cylindrical shank fits standard micro collet and chuck systems

Compatibility

Designed for use in standard micro drill chucks and precision collet holders accepting a 1.50 mm straight-cylindrical shank, consistent with miniature-series solid carbide drill bit applications.

Installation Notes

Installation and use of micro drill bits should be performed by qualified machinists familiar with small-diameter tooling practices. Ensure the spindle and workholding equipment are fully stopped and de-energized before changing tooling. Use appropriate collet or chuck rated for the 1.50 mm shank diameter to prevent runout. Micro drill bits are fragile at this diameter — avoid side loading and confirm proper speed and feed parameters before operation to prevent breakage.