Accupro A-6120172R Micro Drill Bit 1.72 Mm Solid Carbide

Product Description

The ACCUPRO A-6120172R is a solid carbide micro drill bit designed for precision drilling in small-diameter applications. It measures 1.72 mm in diameter (0.0677 inches) with a 38 mm overall length and a 7.20 mm flute length. The 120-degree point angle promotes accurate entry and reduces walking on hard or brittle materials. The bright, uncoated finish suits applications where coating buildup would be a concern. This bit belongs to the Miniature series and is typically installed by machinists, toolmakers, and precision fabricators working with tight tolerances in metalworking or circuit board drilling operations.

This micro drill bit is suited for precision drilling in small-diameter through-holes and blind holes in ferrous and non-ferrous materials. The straight-cylindrical shank with a 2.00 mm diameter fits standard collet chucks and micro drill chucks used in CNC machining centers, benchtop drill presses, and hand-held precision drilling fixtures. Its regular spiral flute geometry supports controlled chip evacuation in shallow-depth applications. No coolant-through capability is present, so external coolant or dry cutting methods apply depending on material requirements.

Key Features

• 1.72 mm cutting diameter (0.0677 inches) for tight-tolerance micro drilling
• Solid carbide construction provides rigidity and wear resistance in hard materials
• 120-degree standard point angle for accurate positioning and reduced deflection
• Bright uncoated finish suitable for non-ferrous metals and non-metallic materials
• Spiral flute, right-hand cut geometry for standard rotational drilling setups
• Straight-cylindrical 2.00 mm shank for compatibility with common collet and chuck systems

Compatibility

Designed for use in standard collet chucks and micro drill chucks accepting a 2.00 mm straight-cylindrical shank, as used in CNC machining centers and precision bench drilling equipment.

Installation Notes

Installation is performed by machinists and toolroom technicians. Secure the shank firmly in a collet or drill chuck before operation and verify runout with a dial indicator when tolerances are critical. Do not exceed the recommended spindle speed for the material and diameter being drilled. Because this bit has no coolant-through capability, apply external coolant or cutting fluid as appropriate for the workpiece material to prevent heat buildup and premature wear.