Guhring 9038990018200 Micro Drill Bit 1.82mm Carbide

Product Description

The GUHRING 9038990018200 is a solid carbide micro drill bit engineered for high-precision drilling in demanding machining applications. Built from K40-grade carbide and coated with TiAlN for extended tool life and heat resistance, this bit features a 140-degree faceted point angle with web thinning for clean entry and reduced thrust. The oversized shank diameter of 3.00 mm provides rigid tool holding despite the 1.82 mm cutting diameter. Spiral flutes in a regular configuration evacuate chips efficiently. Right-hand cutting direction and h7 diameter tolerance make this bit suitable for tight-tolerance bores in production environments. Installation and operation are performed by machinists and toolroom professionals on CNC machining centers and precision drill presses.

This micro drill bit is suited for precision drilling in hard and abrasive materials including hardened steels, cast irons, and non-ferrous alloys where close-tolerance hole quality is required. The TiAlN coating performs well in dry and minimum-quantity lubrication machining strategies. The 12.00 mm flute length supports controlled chip evacuation in shallow to moderate-depth holes. The compact 38.00 mm overall length is optimized for short-reach applications in fixture work or component drilling where rigidity is critical. No coolant-through capability is present, so external coolant or MQL application at the cutting zone is standard practice.

Key Features

• 1.82 mm cutting diameter with h7 tolerance for close-tolerance bore applications
• K40 solid carbide substrate for hardness and wear resistance in abrasive materials
• TiAlN coating provides thermal protection and extended tool life in dry or MQL machining
• 140-degree faceted point with web thinning reduces entry thrust and improves centering
• Oversized 3.00 mm shank increases rigidity relative to cutting diameter
• Regular spiral flutes ensure consistent chip evacuation from the cutting zone

Compatibility

Designed for use in standard drill chucks, collet systems, and shrink-fit holders that accept a 3.00 mm shank diameter. Part of GUHRING Series 3899 micro drill tooling.

Installation Notes

Installation is performed by qualified machinists or toolroom personnel. Ensure the machine spindle and tool holder are fully stopped and locked out before inserting or removing the bit. Seat the oversized shank fully and evenly in the collet or chuck to prevent runout. Because this bit has no coolant-through capability, verify external or MQL coolant is directed at the cutting zone to prevent thermal damage at this diameter.