Guhring 9003010013200 Micro Drill Bit 55 Wire Cobalt

Product Description

The GUHRING 9003010013200 is a cobalt micro drill bit in the Series 301 line, designed for precision drilling in small-diameter applications. It carries a wire gauge size of 55, which corresponds to a diameter of 1.32 mm (0.0520 inches). The 118-degree faceted point and web-thinned, tapered web geometry reduce entry force and improve centering accuracy. With a bright, uncoated finish and a right-hand cutting direction, this bit runs at standard feed-and-speed parameters for cobalt tooling. Overall length is 25 mm with a flute length of 8.50 mm. It is appropriate for machinists, toolroom technicians, and precision fabricators requiring tight-tolerance, small-hole drilling.

This drill bit is rated for use in aluminum as its primary workpiece material, with titanium alloy listed as a secondary application. The Flute By Diameter Ratio of 5xD and a maximum drilling depth of 6.52 mm (0.2570 inches) make it suitable for shallow, precise holes in close-tolerance components found in aerospace, electronics, and general precision machining environments. The straight-cylindrical shank seats directly in standard collets or drill chucks without modification. Sold individually, with a minimum order quantity of 10 units per order.

Key Features

• Wire size 55 diameter: 1.32 mm (0.0520 inches) with a tolerance of +0.000 to -0.004 mm
• 118-degree faceted drill point with web-thinned, tapered web for reduced thrust force
• Cobalt tool material for improved heat resistance over standard high-speed steel
• Bright, uncoated finish compatible with standard cutting fluids
• Spiral flute, regular helix, conforming to DIN 1899 specification
• Straight-cylindrical shank diameter of 1.50 mm fits standard collets and micro chucks

Compatibility

Designed as a DIN 1899-compliant straight-shank micro drill bit for use in standard drill chucks and precision collet systems accepting a 1.50 mm shank diameter. Primary workpiece material codes are K, M, N, and P (aluminum and similar non-ferrous materials); secondary material code S covers titanium alloys.

Installation Notes

This drill bit should be installed and operated by qualified machinists or toolroom technicians familiar with micro-diameter cutting tools. Secure the straight-cylindrical shank firmly in a precision collet or drill chuck rated for the shank diameter before use. Verify spindle runout is within acceptable tolerance for micro tooling, as excessive runout accelerates breakage at this diameter. Power down and de-energize the machine fully before changing tooling.