Accupro A-6100078R Micro Drill Bit 0.0307 in Solid Carbide

Product Description

The ACCUPRO A-6100078R is a solid carbide micro drill bit engineered for precision drilling in tight-tolerance applications. With a cutting diameter of 0.0307 inches and a 120-degree drill point angle, this bit delivers accurate entry and clean hole geometry in hard and abrasive materials where high-speed steel tooling falls short. The bright/uncoated finish is suited for materials that react poorly to coated tooling. At 30.00 mm overall length with a 1.50 mm straight-cylindrical shank, this miniature-series bit fits micro drilling setups used in machining, electronics fabrication, and precision manufacturing environments. Machinists and toolroom technicians are the primary installers and end users.

This micro drill bit is intended for use in CNC machining centers, drill presses, and precision hand-held spindle units configured for small-diameter tooling. The right-hand cutting direction and spiral flute geometry make it a standard choice for through-hole and blind-hole drilling in printed circuit boards, instrument components, medical device parts, and similarly fine-detail workpieces. The 6.30 mm flute length supports chip evacuation in short-depth holes typical of micro drilling operations.

Key Features

• 0.0307 inch cutting diameter for high-precision micro hole applications
• Solid carbide construction provides rigidity and wear resistance in hard materials
• 120-degree drill point angle for accurate positioning and reduced walking
• Bright/uncoated finish compatible with materials sensitive to coating chemistry
• Straight-cylindrical shank at 1.50 mm fits standard micro collet and chuck systems
• Spiral flute geometry promotes chip evacuation during short-depth drilling

Compatibility

Designed for use in micro drilling applications requiring a 1.50 mm straight-cylindrical shank. Fits standard collets and chucks configured for miniature-series drill bits in CNC and manual spindle equipment.

Installation Notes

Installation and use should be performed by qualified machinists familiar with micro tooling setups. Secure the shank fully within the collet or chuck to the manufacturer-recommended grip depth before operation. Due to the small diameter, excessive feed pressure or lateral force can cause bit deflection or breakage — use appropriate feed rates for the workpiece material. Inspect the cutting edges under magnification before use and discard any bit showing chipping or deformation.