Guhring 9064880028000 Micro Drill Bit 2.80 Mm Carbide

Product Description

The GUHRING 9064880028000 is a solid carbide micro drill bit engineered for very small hole drilling in demanding materials including stainless steel, superalloys, and titanium. Built to Series 6488 specifications, it features a 140-degree faceted point angle with web thinning for improved center stability and reduced thrust force at entry. The Perrox coating provides enhanced wear resistance and thermal protection during high-speed drilling cycles. At 2.80 mm in diameter with a 4.00 mm straight-cylindrical shank, it is designed for use in precision machining centers, CNC drill presses, and high-accuracy hand-held spindle setups where tight tolerance work is required. Licensed machinists and precision tooling professionals are the primary installers of this bit.

This drill bit is suited for production and maintenance machining operations where small-diameter holes must be drilled in hard or abrasive workpiece materials. Its spiral flute geometry and coolant-through design make it appropriate for deep micro-hole applications in aerospace, medical device, and industrial component manufacturing environments. The m7 diameter tolerance designation indicates a close-tolerance shank fit suitable for collet and precision chuck systems commonly used in controlled-depth drilling setups.

Key Features

• Solid carbide construction for rigidity and wear resistance in hard materials
• Perrox coating extends tool life in stainless steel, superalloys, and titanium
• 140-degree faceted point with web thinning reduces entry thrust and improves centering
• Coolant-through capability supports chip evacuation and heat management in deep holes
• Straight-cylindrical shank at 4.00 mm diameter fits standard collet and precision chuck systems
• m7 shank diameter tolerance ensures consistent, repeatable tool holding

Compatibility

Designed for very small hole drilling applications in stainless steel, superalloys, and titanium workpieces. Compatible with collet chucks and precision tool holders accepting a 4.00 mm straight-cylindrical shank. Part of the GUHRING Series 6488 micro drill line.

Installation Notes

Installation and operation should be performed by qualified machinists familiar with carbide tooling practices. Ensure the machine spindle and tool holder are fully powered down and locked before inserting or removing the bit. Use a calibrated collet or precision chuck appropriate for the 4.00 mm shank diameter to prevent runout that could fracture the small-diameter carbide tip. Verify coolant-through flow is active before beginning drilling cycles in hard or abrasive materials.