Niqua® 80 Tool Steeel Burs Pear

Shape compound curvatures, open curved under-bezel cavities, and blend transitions without chatter or digging. Manufactured to strict Swiss-Made precision standards for NIQUA, the NIQUA® SUPER Q® Pear-Shaped Bur "80" (Birnenfräser / Teardrop Bur) is a heavy-duty rotary milling and contouring cutter engineered for goldsmiths, gemstone setters, and precision jewelry model makers.

Featuring a tapered teardrop geometry that transitions smoothly from a wide, rounded apex down to an inverted tapered flank, the Series 80 profile combines dome smoothing with lateral undercut capabilities. The rounded crown prepares curved seats and concave pockets, while the tapered body hollows ring galleries and relieves prong shoulders with continuous cutting support. Forged from premium hardened tool steel, each bur delivers clean chip evacuation and dependable edge retention in ductile alloys including yellow gold, sterling silver, copper, brass, and related non-ferrous metals. Mounted on a standard 2.35 mm (3/32") shank, these burs fit directly into jeweler flexible shaft handpieces, bench micromotors, and quick-change bench systems. Available in finishing diameters of 6.00 mm and 8.00 mm (Art.-No. 03 248 060 and 03 248 080), each size is packaged in a bench storage box containing 6 pieces.

Why Choose NIQUA® SUPER Q® 80 Pear-Shaped Burs

• Distinctive Pear-Shaped (Teardrop) Profile: Combines a rounded upper dome with an inverted taper flank, enabling undercut milling and curved contouring with a single tool.

• Controlled Undercutting & Hollowing: The narrowing neck taper provides clearance behind prongs, bezels, and gallery borders without dragging adjacent edges.

• Deep Swarf Evacuation Flutes: Ground flutes lift and clear chips outward during heavy stock removal, preventing tool loading and galling in ductile gold and silver.

• Low-Vibration Concentric Operation: Precision-ground Swiss tool steel core minimizes radial runout, ensuring steady handpiece tracking and uniform surface finishes.

• Hardened Swiss-Quality Tool Steel: Provides wear resistance, edge sharpness, and extended service life across continuous workshop use.

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