Accupro A-6120048R Micro Drill Bit 0.48 Mm Solid Carbide

Product Description

The ACCUPRO A-6120048R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It features a 0.48 mm (0.0189 inch) diameter, a 120-degree standard point angle, and a bright/uncoated finish. The bit runs a right-hand spiral flute with a regular spiral type, promoting efficient chip evacuation in small-diameter bores. With an overall length of 25 mm and a 1.00 mm straight-cylindrical shank, it fits standard miniature-series toolholders. Machinists and precision tooling technicians working in electronics, medical device, watchmaking, or fine metalwork applications rely on this geometry for consistent entry and minimal runout at micro-scale diameters.

This bit is suited for drilling in ferrous and non-ferrous metals, plastics, and composite materials where micro-scale hole accuracy is required. The solid carbide construction provides the rigidity needed to maintain straightness at diameters under 0.5 mm. It is appropriate for use in CNC machining centers, drill presses, and high-speed spindles capable of holding a 1.00 mm straight shank. The miniature series designation indicates compatibility with precision toolholding systems sized for small-diameter work. No coolant-through feature is present, so flood or mist coolant applied externally is the standard approach for heat management at these cutting diameters.

Key Features

• Solid carbide construction provides rigidity and wear resistance at 0.48 mm diameter
• 120-degree standard point angle for accurate centering on entry
• Right-hand spiral flute with regular spiral promotes chip evacuation
• Bright/uncoated finish compatible with a wide range of workpiece materials
• 1.00 mm straight-cylindrical shank fits standard miniature-series toolholders
• 25 mm overall length with 2.00 mm flute length optimized for micro-depth drilling

Compatibility

Designed for use in precision machining setups that accept a 1.00 mm straight-cylindrical shank, including CNC machining centers and high-speed drill spindles configured for miniature-series tooling.

Installation Notes

Installation should be performed by a qualified machinist or tooling technician. Ensure the spindle and toolholder are clean and free of debris before seating the shank to prevent runout. At micro diameters, even minor misalignment in the collet or chuck can cause bit deflection or breakage. Do not exceed the spindle speed and feed rate recommended for solid carbide micro drills in the target material, and apply external coolant or mist to manage heat when drilling metals.