Guhring 9006600001900 Micro Drill Bit Cobalt Tin 118deg

Product Description

The GUHRING 9006600001900 is a cobalt micro drill bit engineered for precision drilling in small-diameter applications. Built to DIN 1899 specification, this Series 660 bit carries a wire gauge size of 93, which corresponds to a decimal diameter of 0.0075 inches. The TiN coating extends tool life and reduces friction during cutting. A 118-degree faceted point with web thinning and a tapered web configuration improves centering accuracy and reduces thrust on entry. The straight-cylindrical shank measures 1.00 mm in diameter, and the overall length is 0.984 inches. Right-hand spiral fluting evacuates chips efficiently in high-speed operations. Licensed machinists and precision tooling technicians are the primary users of this bit.

This micro drill bit is suited for drilling aluminum as its primary workpiece material, with titanium alloy listed as a secondary workpiece material. The 5xD flute-to-diameter ratio supports controlled chip evacuation in shallow micro-hole applications. Maximum drilling depth is 0.032 inches (0.82 mm), making this bit appropriate for PCB work, instrument components, medical device manufacturing, and other tight-tolerance machining environments where hole position and diameter consistency are critical. The regular spiral type and right-hand cut are standard for conventional CNC and manual drilling setups.

Key Features

• Wire size 93 (0.0075 inches decimal diameter) for micro-hole drilling
• Cobalt construction with TiN coating for wear resistance and extended tool life
• 118-degree faceted point with web thinning for accurate entry and reduced thrust
• Straight-cylindrical shank at 1.00 mm diameter for standard collet compatibility
• Right-hand cut, regular spiral fluting for efficient chip evacuation
• Built to DIN 1899 specification for dimensional consistency

Compatibility

Designed for use in precision drilling applications involving aluminum (material code K, M, N, P) and titanium alloy (material code S) workpieces, consistent with Series 660 DIN 1899 micro drill specifications.

Installation Notes

Installation and use of this bit should be performed by qualified machinists or tooling technicians familiar with micro-diameter drill handling. Secure the straight-cylindrical shank firmly in a precision collet or chuck rated for 1.00 mm shanks before operation. At this diameter, excessive runout or side loading will cause bit breakage -- verify spindle runout is within acceptable tolerance before drilling. Follow machine manufacturer guidelines and applicable shop safety procedures when working with micro tooling at high RPM.