Accupro A-6100111R Micro Drill Bit 1.11 Mm Solid Carbide

Product Description

The ACCUPRO A-6100111R is a solid carbide micro drill bit designed for precise small-diameter drilling in tight-tolerance applications. Measuring 1.11 mm (0.0437 inches) in diameter with an overall length of 30.00 mm, this bit features a 120-degree drill point angle and a straight-cylindrical shank with a 1.50 mm shank diameter. The bright/uncoated finish preserves dimensional accuracy and suits applications where coating buildup would compromise hole size. It belongs to the ACCUPRO Miniature Series and is sized for work that standard jobber bits cannot reach. Machinists, toolroom technicians, and precision fabricators rely on this type of bit for micro-drilling tasks in hard and abrasive materials where carbide rigidity is required.

This micro drill bit is suited for use in CNC machining centers, drill presses, and precision hand-operated spindles where fine-diameter holes are required in materials such as hardened steel, stainless steel, composites, and ceramics. The Miniature Series designation indicates it is built for applications where hole diameters fall well below standard fractional sizes. Typical install scenarios include electronics enclosures, instrument components, medical device tooling, mold work, and other precision manufacturing environments where hole location and diameter tolerance are critical.

Key Features

• Solid carbide construction delivers rigidity and wear resistance in hard and abrasive materials
• 1.11 mm (0.0437 inches) cutting diameter for micro-scale hole applications
• 120-degree point angle optimized for standard entry geometry in precision drilling
• Bright/uncoated finish maintains exact dimensional tolerances without coating thickness variability
• Spiral flute, right-hand cutting direction for conventional CNC and manual spindle use
• Straight-cylindrical shank at 1.50 mm diameter for secure chuck or collet retention

Compatibility

Designed for use with CNC machining centers, precision drill presses, and spindle setups equipped with collets or chucks capable of holding a 1.50 mm straight-cylindrical shank. Suitable for the ACCUPRO Miniature Series application range.

Installation Notes

Installation and use should be performed by qualified machinists or toolroom personnel familiar with micro-drilling operations. Ensure the spindle, collet, and workholding are clean and properly secured before engaging the bit, as runout at this diameter range will cause premature breakage. Do not exceed the recommended feed and speed parameters for the workpiece material and bit diameter. At sub-1.5 mm diameters, manual peck drilling cycles and reduced feed rates are standard practice to prevent bit deflection and fracture.