Accupro A-6100187R Micro Drill Bit 1.87 Mm Solid Carbide

Product Description

The ACCUPRO A-6100187R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. With a 1.87 mm (0.0736 inch) cutting diameter and a 120-degree point angle, it delivers clean, accurate entry points with minimal walking. The straight-cylindrical shank measures 2.00 mm in diameter, and the overall length is 38.00 mm with a 12.00 mm flute length. Bright/uncoated finish keeps the cutting edge visible and is well-suited for non-ferrous metals, plastics, and composite materials. Right-hand spiral flute geometry promotes chip evacuation during through-hole and blind-hole drilling operations.

This miniature series drill bit is intended for machinists, toolmakers, and precision fabricators working on small-diameter hole applications. Typical use cases include PCB drilling, instrument components, watch parts, medical device manufacturing, and other high-precision work where standard drill sizes are too large. The bit fits collet chucks and drill chucks accepting a 2.00 mm straight shank. Coolant-through capability is not available on this bit, so external coolant or cutting fluid application is recommended when drilling harder materials.

Key Features

• 1.87 mm cutting diameter with 0.0736 inch decimal equivalent for cross-reference use
• 120-degree standard point angle reduces thrust force and aids accurate hole entry
• Solid carbide construction provides rigidity and wear resistance at small diameters
• Bright/uncoated finish suitable for non-ferrous metals, plastics, and composites
• Regular spiral flute with right-hand cut promotes efficient chip removal
• Straight-cylindrical 2.00 mm shank fits standard collet and drill chuck tooling

Compatibility

Designed for use in CNC machining centers, micro-drilling machines, and precision drill presses accepting a 2.00 mm straight-cylindrical shank. Compatible with collet systems and drill chucks sized for 2.00 mm shank tooling.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with micro-drill tooling. Secure the shank fully into the collet or chuck and verify runout before drilling to prevent bit breakage at small diameters. Apply external cutting fluid when drilling harder materials, as this bit does not support coolant-through delivery. Replace the bit at the first sign of chipping or dulling to maintain hole quality and avoid workpiece damage.