Guhring 9003010003200 Micro Drill Bit Size 82 Cobalt

Product Description

The GUHRING 9003010003200 is a cobalt micro drill bit designed for precision drilling in small-diameter, tight-tolerance applications. Built to DIN 1899 specification, it carries a wire gauge size of 82 (0.0126 inches decimal), an overall length of 0.984 inches, and a 118-degree faceted point angle. The spiral flute geometry, combined with web thinning and a tapered web configuration, promotes clean chip evacuation and reduces thrust load in small-hole work. The bright/uncoated finish keeps the surface true to the cobalt substrate. Licensed HVAC, plumbing, and electrical tradespeople, as well as precision machinists and tool-and-die shops, commonly use this bit for micro-hole operations where tolerance control is critical.

This drill bit is intended for use in materials coded K, M, N, and P, with aluminum listed as the primary workpiece material. It also carries a secondary rating for titanium alloys (material code S). The 5xD flute-to-diameter ratio and 1.92 mm maximum drilling depth make this bit appropriate for controlled-depth micro-drilling on thin-wall and precision components. The straight-cylindrical shank with a 1.00 mm diameter seats securely in standard collet chucks and precision drill presses suited for small-diameter tooling.

Key Features

• Cobalt tool material provides elevated heat resistance and edge retention in hard and abrasive workpiece materials
• 118-degree faceted drill point with web thinning reduces entry force and improves centering accuracy
• Tapered web configuration supports strength at the tip while minimizing material displacement
• Bright/uncoated finish maintains dimensional accuracy and is suited for non-ferrous and light-alloy drilling
• DIN 1899 specification ensures interchangeability with other tooling built to the same standard
• Diameter tolerance of +0.000 to -0.004 mm supports tight-fit and close-clearance hole requirements

Compatibility

Rated for primary use in aluminum and non-ferrous materials (material codes K, M, N, P) and secondarily in titanium alloys (material code S). Designed as a Series 301 DIN 1899 micro drill bit compatible with standard 1.00 mm straight-cylindrical shank collet systems.

Installation Notes

This drill bit is installed and operated by machinists and precision trade technicians using collet chucks or precision drill press setups rated for small-diameter tooling. Before mounting, verify that the spindle and collet are clean and free of debris to avoid runout that can snap micro-diameter bits. Do not exceed the maximum drilling depth of 0.076 inches without retracting to clear chips. Use cutting fluid or air blast appropriate for the workpiece material to manage heat at this diameter.