Accupro A-6120149R Micro Drill Bit 1.49mm Solid Carbide

Product Description

The ACCUPRO A-6120149R is a solid carbide micro drill bit designed for precision drilling in small-diameter applications. It measures 1.49 mm (0.0587 inches) in diameter with an overall length of 30 mm (1.18 inches) and a flute length of 6.70 mm (0.26 inches). The 120-degree standard point angle delivers accurate entry and reduced walking on hard or brittle materials. Bright and uncoated, this bit is suited for applications where coating adhesion or heat buildup is not a limiting factor. Right-hand spiral flutes clear chips efficiently in miniature-scale drilling operations.

This bit is intended for precision machining environments including printed circuit board fabrication, instrument manufacturing, mold and die work, and other applications requiring controlled, small-diameter hole placement. The straight-cylindrical shank with a 1.50 mm diameter seats securely in standard collet chucks and micro drill chucks. It is typically run on CNC machining centers, drill presses, or dedicated PCB drilling equipment where spindle runout is tightly controlled. Machinists and precision fabricators working with ferrous metals, nonferrous alloys, plastics, and composites are the primary users.

Key Features

• 1.49 mm diameter with 120-degree standard point for accurate entry and minimal deflection
• Solid carbide construction provides rigidity and wear resistance in hard materials
• Bright and uncoated finish — suitable for dry cutting or light lubrication applications
• Regular spiral flute geometry promotes chip evacuation in miniature bores
• Straight-cylindrical shank at 1.50 mm fits standard micro collets and drill chucks
• Right-hand cut for use with standard-rotation spindles

Compatibility

Designed as a miniature-series replacement or production drill bit for use in any machine tool or drill press equipped with a collet or chuck accepting a 1.50 mm straight-cylindrical shank.

Installation Notes

Install into a collet or drill chuck matched to the 1.50 mm shank diameter and verify runout before drilling — excessive runout is the leading cause of micro drill breakage. Power down and lock out the spindle before changing tooling. Use manufacturer-recommended spindle speeds for the work material and bit diameter; micro drills require significantly higher RPM than standard-size bits to achieve proper surface footage. Avoid side loading or peck-drilling depths that exceed the flute length.