Guhring 9003010011600 Cobalt Micro Drill Bit 1.16 Mm

Product Description

The GUHRING 9003010011600 is a cobalt micro drill bit designed for precision drilling in small-diameter applications. Built to DIN 1899 specification, it features a 118-degree faceted point with web thinning for reduced entry force and improved centering. The straight-cylindrical shank measures 1.50 mm in diameter, and the overall length is 25 mm with a flute length of 7.60 mm. The bright, uncoated finish suits applications where coating additives are undesirable. This bit is used by machinists, tool-and-die professionals, and precision fabricators working with tight-tolerance bore requirements.

The 9003010011600 is suited for drilling aluminum, non-ferrous metals, and titanium alloys in both production and prototype environments. Its Series 301 designation and 5xD flute-to-diameter ratio make it a standard choice for micro-hole work on CNC machining centers and manual drill presses where controlled feed rates are maintained. The right-hand spiral flute clears chips efficiently at small diameters where chip packing is a common failure point.

Key Features

• 1.16 mm drill diameter with a tight tolerance of +0.000 to -0.004 mm for precise bore sizing
• 118-degree faceted point with web thinning and tapered web configuration for clean entry
• Cobalt construction provides heat resistance and edge retention in harder workpiece materials
• Right-hand spiral flute geometry promotes efficient chip evacuation in micro-diameter holes
• Bright/uncoated finish compatible with a wide range of cutting fluids and workpiece materials
• Built to DIN 1899 specification for dimensional consistency across production runs

Compatibility

Designed for use in aluminum, non-ferrous metals, and titanium alloys as stated in the manufacturer specifications. Primary workpiece material codes K, M, N, and P apply, with secondary compatibility for material code S (titanium alloy). No additional specific machine or chuck compatibility data was provided in the input.

Installation Notes

Installation and use of micro drill bits should be performed by qualified machinists familiar with small-diameter tooling. Secure the straight-cylindrical shank in a collet or chuck rated for 1.50 mm shanks, ensuring runout is minimized before drilling. Reduce spindle speed and feed rate compared to standard-diameter bits to avoid bit deflection or breakage. Do not apply excessive axial force, particularly at entry; allow the web-thinned point to self-guide before increasing feed pressure.