Accupro A-6120075R Micro Drill Bit 0.75 Mm Solid Carbide

Product Description

The ACCUPRO A-6120075R is a solid carbide micro drill bit designed for high-precision drilling in miniature and close-tolerance applications. With a 0.75 mm cutting diameter (0.0295 decimal inch equivalent), a 120-degree point angle, and a right-hand spiral flute configuration, this bit delivers accurate, repeatable hole entry in hard and abrasive materials. The bright, uncoated finish suits materials where coating adhesion or contamination is a concern. A 1.50 mm straight-cylindrical shank keeps the bit compatible with standard collet chucks and precision drill spindles. Machinists and toolroom technicians working in electronics, medical device, instrumentation, and precision mechanical fabrication will find this bit appropriate for demanding micro-drilling work.

This bit is suited for CNC machining centers, benchtop drill presses, and rotary tool setups equipped with precision collets capable of holding a 1.50 mm shank. Its 30 mm overall length and 3.80 mm flute length are optimized for shallow, accurate holes in tight geometries. It is commonly used in PCB drilling, watch components, dental instruments, and aerospace instrumentation assemblies where hole diameter tolerance is critical. The miniature series designation indicates it is purpose-built for sub-1 mm drilling operations rather than general-purpose use.

Key Features

• 0.75 mm cutting diameter with 0.0295 decimal inch equivalent for precision fitment reference
• Solid carbide construction resists wear in hard, abrasive, and composite materials
• 120-degree standard point angle for positive entry and reduced walking on entry
• Right-hand cut with regular spiral flute for efficient chip evacuation in shallow holes
• 1.50 mm straight-cylindrical shank compatible with standard precision collet chucks
• Bright, uncoated finish suitable for materials sensitive to coating transfer or heat discoloration

Compatibility

Designed as an OEM-style miniature series solid carbide drill bit compatible with precision collet chucks and spindles accepting a 1.50 mm straight-cylindrical shank.

Installation Notes

Installation and use of this bit should be performed by machinists or qualified tooling technicians familiar with micro-drill setups. Ensure the spindle and collet are clean and within the appropriate holding tolerance for a 1.50 mm shank before seating the bit. Use recommended spindle speeds for carbide micro drills in the applicable material, as carbide is brittle and susceptible to breakage from side-loading, runout, or improper feed rates. Do not use in handheld rotary tools where runout and axial alignment cannot be controlled.