Accupro A-6120115R Micro Drill Bit 1.15mm Solid Carbide

Product Description

The ACCUPRO A-6120115R is a solid carbide micro drill bit designed for precision drilling in miniature and tight-tolerance applications. It measures 1.15 mm (0.0453 inches) in diameter with a 120-degree drill point angle and a straight-cylindrical shank of 1.50 mm diameter. The overall length is 30.00 mm with a flute length of 5.40 mm. A bright, uncoated finish keeps the surface clean for inspection and suits a wide range of base materials. Right-hand cutting direction and a regular spiral flute type ensure consistent chip evacuation during drilling operations. This bit is sized for tasks where standard tooling is too large and fine positional accuracy is required.

This micro drill bit is suited for machinists, toolmakers, and precision fabricators working on printed circuit boards, instrument components, watch parts, medical device assemblies, and similar small-scale workpieces. The miniature series designation indicates suitability for CNC machining centers, micro-drilling machines, and precision drill presses where runout and concentricity tolerances are tight. It is sold individually, with a minimum order quantity of 10 units, making it appropriate for shop stock replenishment or tooling kits.

Key Features

• 1.15 mm (0.0453 inch) drill diameter for micro and miniature drilling applications
• Solid carbide construction provides rigidity and wear resistance in small diameters
• 120-degree standard point angle for accurate entry and reduced walking
• Regular spiral flutes support chip evacuation in through-hole drilling
• Straight-cylindrical shank at 1.50 mm fits standard micro collets and chucks
• Bright, uncoated finish allows visual inspection of cutting edges before use

Compatibility

Designed as an OEM-style replacement or standard stock micro drill bit compatible with precision drilling equipment that accepts a 1.50 mm straight-cylindrical shank, including CNC micro-drilling machines and precision drill presses.

Installation Notes

This bit should be installed by a qualified machinist following shop safety procedures for rotating equipment. Ensure the machine spindle is fully stopped and powered down before changing tooling. Use a properly sized collet or drill chuck rated for 1.50 mm shanks to maintain concentricity and prevent bit breakage. At this diameter, excessive feed pressure or misalignment is a common cause of breakage — follow the machine manufacturer's recommended feed rate and spindle speed for solid carbide micro drills.