Guhring 9003010006300 Micro Drill Bit 0.0248 in Cobalt

Product Description

The GUHRING 9003010006300 is a cobalt micro drill bit designed for precision drilling in small-diameter applications. It measures 0.0248 inches in diameter with an overall length of 0.984 inches and a maximum drilling depth of 0.128 inches. The 118-degree faceted point and web-thinned, tapered web configuration reduce entry force and help maintain accurate hole placement at small diameters. The spiral flute geometry promotes chip evacuation, which is critical when drilling at this scale. This bit is intended for use by machinists, tool-and-die professionals, and precision fabricators working with tight-tolerance drilling operations.

The 9003010006300 is suited for drilling aluminum, titanium alloy, and similar non-ferrous and light alloy materials in precision manufacturing environments. The straight-cylindrical shank with a 1.00 mm shank diameter allows it to seat securely in standard collet chucks and precision drill chucks used on CNC machines, drill presses, and micro-drilling fixtures. The 5xD flute-to-diameter ratio and regular spiral type make it appropriate for shallow to moderate depth holes in production and prototype settings. It conforms to DIN 1899 specification.

Key Features

• Cobalt construction provides hardness and heat resistance for drilling hard and abrasive alloys
• 118-degree faceted drill point with web thinning reduces thrust and improves centering accuracy
• Bright/uncoated finish — no coating buildup that could affect dimensional accuracy at micro scale
• Straight-cylindrical shank at 1.00 mm diameter fits standard precision collet systems
• Right-hand cut spiral flute design promotes chip clearing during through and blind hole drilling
• Conforms to DIN 1899 specification for micro drill geometry and tolerances

Compatibility

Designed as a DIN 1899 Series 301 micro drill for use in CNC machining centers, micro-drilling fixtures, and precision drill presses accepting a 1.00 mm straight-cylindrical shank. Primary workpiece materials include aluminum and titanium alloy.

Installation Notes

Install and remove micro drill bits with the machine fully powered down and the spindle at a complete stop. Secure the shank fully in a precision collet or drill chuck rated for the shank diameter before operation. At this diameter, bit deflection and breakage risk increase significantly with excessive feed rate or runout — verify chuck concentricity before use. Micro drill handling should follow standard shop safety practices including eye protection and secure workpiece fixturing.