Accupro A-6100185R Micro Drill Bit 1.85 Mm Solid Carbide

Product Description

The ACCUPRO A-6100185R is a solid carbide micro drill bit designed for precision drilling in tight-tolerance applications. With a 1.85 mm (0.0728 inches) drill diameter and a 120-degree point angle, this bit delivers accurate, clean entry in hard and abrasive materials where standard high-speed steel tooling falls short. The bright/uncoated finish suits applications where coating interaction with the workpiece material is a concern. Overall length is 38.00 mm (1.496 inches), with a 12.00 mm (0.472 inches) flute length. The 2.00 mm (0.0787 inches) straight-cylindrical shank seats securely in standard precision collets and drill chucks.

This miniature series drill bit is suited for machinists, toolmakers, and precision fabricators working in CNC machining centers, drill presses, or manual tooling setups. Typical applications include circuit board drilling, precision instrument components, medical device manufacturing, and small-diameter hole generation in ferrous and non-ferrous metals, plastics, and composites. The right-hand cutting direction and spiral flute geometry support standard spindle rotation for reliable chip evacuation in micro-diameter work.

Key Features

• 1.85 mm (0.0728 inches) drill diameter, equivalent to wire gauge size 49
• Solid carbide construction for rigidity and wear resistance in hard materials
• 120-degree standard point angle for accurate positioning and reduced walking
• Spiral regular flute type promotes consistent chip evacuation
• Straight-cylindrical shank compatible with standard precision collets
• Bright/uncoated finish — no coating interference with workpiece materials

Compatibility

Designed as an OEM-style miniature drill bit for use in CNC machining centers and precision drilling setups that accept a 2.00 mm straight-cylindrical shank.

Installation Notes

Installation should be performed by a qualified machinist following standard tooling setup procedures. Ensure the spindle is fully stopped and the machine is powered down before seating or removing the bit from the collet or chuck. Verify runout with an indicator before committing to a production run, as micro-diameter carbide tooling is sensitive to misalignment. Do not exceed the recommended feed and speed parameters for the workpiece material, as carbide micro drills are brittle under lateral load.