Niqua® 123 Tungsten Carbide Burs Round

Mill hard precious metals, shape refractory alloys, and engrave tough surfaces without rapid dulling or head deflection. Manufactured to Swiss-Made precision standards for NIQUA, the NIQUA® SUPER Q® Series "123" Tungsten Carbide Round Bur (Kugelfräser) is an industrial-grade rotary milling cutter engineered for diamond setters, goldsmiths, fine engravers, and precision toolmakers.

Featuring a micro-grain tungsten carbide cutting head brazed onto a precision-ground stainless steel shank, the Series 123 bur delivers superior hardness and thermal wear resistance compared to standard tool steel cutters. While tool steel can lose its edge when cutting abrasive or work-hardened metals, this solid carbide head cuts aggressively through platinum, white gold, stainless steel, titanium, glass, and ceramics without losing cutting geometry. The precision-machined spherical fluting evacuates chips rapidly to ensure smooth, chatter-free rotary cutting and consistent depth control. Built with an industry-standard 2.35 mm (3/32") shank, these round carbide burs mount directly into flexible shaft handpieces, brushless bench micromotors, and high-speed quick-change systems. Offered in an extensive micro-size progression from 0.20 mm to 2.70 mm (Art.-Nr. 03 235 002 to 03 235 027), each size is packaged in a bench storage box containing 6 pieces.

Why Choose NIQUA® SUPER Q® 123 Tungsten Carbide Round Burs

• Micro-Grain Tungsten Carbide Head: Provides high abrasion resistance and heat tolerance, outlasting conventional tool steel burs by up to 10 times in tough metals. 

• Broad Material Compatibility: Cuts through platinum, palladium, 18K/14K white gold, titanium, stainless steel, glass, and ceramics without chipping or dulling prematurely. 

• True Spherical Fluting Geometry: Ground to strict tolerances to mill perfectly round bearing seats and pilot recesses without leave-behind ridges or chatter marks. 

• Vibration-Free Concentric Operation: Precision-engineered Swiss construction minimizes radial runout, preventing erratic tool jump or surface damage under high microscope magnification. 

• Micro-Diameter Range: Includes ultra-fine diameters down to 0.20 mm and 0.30 mm for micro-pavé layout, precision watchmaking, and delicate filigree detailing. 

• Universal 2.35 mm (3/32") Shank: Drops into standard jewelry flex shaft handpieces and micro-motor quick-change collets without requiring collet adapters.

Size Selection Guide