Guhring 9006600003400 Micro Drill Bit Size 80 Cobalt

Product Description

The GUHRING 9006600003340 is a wire-gauge micro drill bit designed for precision drilling in tight-tolerance applications. Built from cobalt high-speed steel and coated with titanium nitride (TiN), it delivers elevated heat resistance and extended tool life compared to standard HSS bits. The drill measures 0.0135 inches in diameter (wire size 80) with an overall length of 0.984 inches and a flute length of 2.40 mm. It features a 118-degree faceted point, web-thinned and tapered web construction for easier penetration, and a straight-cylindrical shank with a 1.00 mm shank diameter. This bit is sized and finished for use by machinists, tool-and-die makers, and precision fabricators working in production or repair environments.

This micro drill bit is rated for primary use in aluminum (material codes K, M, N, P) and is also suitable for titanium alloy (material code S) as a secondary workpiece material. It follows DIN 1899 specification and belongs to GUHRING Series 660, a line engineered for small-diameter, high-precision drilling. Typical applications include printed circuit board work, instrument components, aerospace parts, and any task requiring a wire-gauge hole with close dimensional control. Maximum drilling depth is 0.074 inches (1.89 mm), making it appropriate for shallow, precise bores rather than deep-hole operations.

Key Features

• Cobalt construction with TiN coating for heat resistance and extended tool life
• Wire size 80 diameter at 0.0135 inches with tight tolerance of +0.000 to -0.004 mm
• 118-degree faceted point with web thinning for reduced entry force
• Tapered web and regular spiral flute for consistent chip evacuation
• Right-hand cut, straight-cylindrical shank compatible with standard micro chucks
• DIN 1899 specification, Series 660, with 5xD flute-to-diameter ratio

Compatibility

Designed as a DIN 1899-compliant micro drill bit for use in standard straight-shank micro chucks and collet holders accepting a 1.00 mm shank diameter. Suited for CNC machining centers, drill presses, and hand-operated precision drilling fixtures configured for wire-gauge tooling.

Installation Notes

Installation and use of this tooling should be performed by a qualified machinist or tooling technician. Ensure the spindle and chuck are fully stopped and de-energized before inserting or removing the bit. Confirm chuck concentricity and proper seating of the straight shank before operation, as runout at this diameter will significantly affect hole quality and tool life. Do not exceed the maximum drilling depth of 0.074 inches per the manufacturer specification.