Accupro A-6200285R Micro Drill Bit 2.85 Mm Solid Carbide

Product Description

The ACCUPRO A-6200285R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. It carries a 2.85 mm diameter (0.1122 inch) with a 140-degree standard point angle and a right-hand spiral flute for efficient chip evacuation. The straight-cylindrical shank measures 3.00 mm in diameter and seats securely in standard collet chucks. At 50 mm overall length with a 20 mm flute length, this miniature-series bit is sized for small-hole work in materials that demand carbide hardness and dimensional accuracy. Licensed machinists and toolroom technicians are the primary installers of this bit.

This micro drill bit is suited for precision hole-making in metalworking, electronics manufacturing, tooling, and instrumentation work where small-diameter accuracy is critical. The bright, uncoated finish means it is ready to run as-supplied without additional prep. Applications typically include through-holes and blind holes in hardened steels, non-ferrous metals, plastics, and composite materials where a standard high-speed steel bit would deflect or wear prematurely. The miniature-series designation targets benchtop CNC machines, precision drill presses, and manual toolroom equipment running at high RPM with light feed rates.

Key Features

• 2.85 mm diameter with 0.1122 inch decimal equivalent for interchangeable reference
• 140-degree standard point angle for aggressive penetration and reduced thrust
• Solid carbide construction for rigidity and wear resistance in hard materials
• Spiral flute geometry promotes chip removal and reduces heat buildup
• 3.00 mm straight-cylindrical shank fits standard collets and drill chucks without modification
• Bright, uncoated finish — no pre-treatment required before use

Compatibility

Designed as an OEM-style replacement and standard tooling option for miniature-series solid carbide drill bit applications requiring a 3.00 mm straight-cylindrical shank and 2.85 mm cutting diameter.

Installation Notes

Installation is performed by machinists or toolroom technicians using a calibrated collet chuck or precision drill chuck rated for the shank diameter. Ensure the spindle and workpiece are fully secured before engaging the spindle. Run at manufacturer-recommended speeds and feeds for the workpiece material — carbide micro drills are brittle and will fracture under excessive lateral load or feed pressure. Inspect the cutting edge under magnification before each use to confirm no chipping or wear is present.