Guhring 9003010001100 Micro Drill Bit 0.0043 in Cobalt

Product Description

The GUHRING 9003010001100 is a cobalt micro drill bit engineered for precision drilling in extremely small-diameter applications. It measures 0.0043 inches in diameter with an overall length of 0.984 inches and features a 118-degree faceted point angle with web thinning for accurate center-starting on tight-tolerance work. The spiral flute geometry and right-hand cutting direction promote efficient chip evacuation in short, confined bore depths. Built to DIN 1899 specification, this bit carries a bright uncoated finish and is manufactured from cobalt high-speed steel for improved heat and wear resistance compared to standard HSS tooling. Installation and use require precision tool holding suited to the 1 mm straight-cylindrical shank diameter.

This micro drill bit is intended for precision machining operations where bore diameters in the sub-0.010-inch range are required. It is rated primarily for aluminum workpieces and also suitable for titanium alloy applications. The maximum recommended drilling depth is 0.013 inches, consistent with its 5xD flute-by-diameter ratio. It is typically used in CNC machining centers, micro-drilling fixtures, and precision manual drill presses in aerospace, electronics, and instrumentation manufacturing environments. This bit is sold individually but requires a minimum order quantity of 10 units.

Key Features

• 0.0043-inch diameter cobalt construction to DIN 1899 specification for consistent micro-bore geometry
• 118-degree faceted point with web thinning and tapered web configuration for accurate entry and reduced thrust force
• Spiral flute, right-hand cut design promotes chip clearance in shallow precision bores
• Bright uncoated finish maintains sharp edge geometry on non-ferrous and light alloy materials
• 1 mm straight-cylindrical shank compatible with standard micro-drill collets and precision chucks
• Rated for aluminum (K, M, N, P material codes) and titanium alloy (S material code) workpieces

Compatibility

Designed as an OEM-specification replacement or direct-use micro drill bit for precision machining applications requiring a 0.0043-inch bore diameter in aluminum and titanium alloy workpieces per DIN 1899 Series 301 standards.

Installation Notes

This micro drill bit should be installed by a qualified machinist using a precision collet or chuck rated for 1 mm shank tooling. Verify spindle runout is minimized before use, as any deviation at this diameter range can cause immediate tool breakage. Always ensure the workpiece is rigidly fixtured and the drilling depth does not exceed the rated maximum of 0.013 inches per pass. Do not exceed manufacturer-recommended feed and speed parameters for the workpiece material being drilled.