Accupro A-6120112R Micro Drill Bit 1.12 Mm Solid Carbide

Product Description

The ACCUPRO A-6120112R is a solid carbide micro drill bit designed for precision drilling in miniature and tight-tolerance applications. With a 1.12 mm diameter (0.0441 inch decimal equivalent) and a 120-degree point angle, this bit is engineered to produce clean, accurate entry holes in hard and abrasive materials. The bright, uncoated finish maintains sharp edge geometry without the added thickness of a coating layer. The straight-cylindrical shank measures 1.50 mm in diameter, seating securely in standard collets and precision chucks used in machining, circuit board fabrication, and small-component manufacturing. This bit is installed and operated by machinists, toolmakers, and precision drilling technicians.

The A-6120112R is suited for use in CNC drilling centers, drill presses, and precision hand-held spindles where small-diameter hole accuracy is critical. Its miniature series designation makes it a common choice for printed circuit board drilling, instrument manufacturing, watchmaking, and other fine-tolerance metalworking or composite drilling operations. The right-hand spiral flute design efficiently evacuates chips during drilling, helping maintain hole quality and reducing bit deflection at small diameters.

Key Features

• 1.12 mm drill diameter with 0.0441 inch decimal equivalent for precise sizing
• 120-degree standard point angle for accurate, self-centering starts
• Solid carbide construction for rigidity and wear resistance in hard materials
• Bright, uncoated finish preserves tight dimensional tolerances on cutting edges
• Right-hand spiral flute promotes efficient chip evacuation in through-hole drilling
• Straight-cylindrical shank at 1.50 mm diameter for secure collet or chuck retention

Compatibility

Designed for use in CNC drilling machines, precision drill presses, and high-speed spindles accepting a 1.50 mm straight-cylindrical shank. Suitable for miniature series drilling applications in metalworking, electronics, and precision manufacturing.

Installation Notes

This bit should be installed and operated by qualified machinists or toolroom technicians familiar with micro-diameter tooling. Ensure the spindle and collet are clean and free of debris before seating the shank to prevent runout. Feed rates and spindle speeds must be set appropriately for the workpiece material and bit diameter to avoid breakage, as carbide micro drills are brittle under lateral load. Do not use this bit for hand drilling without a precision guiding fixture.