Technical Specifications
| Parameter | Technical Specification |
| Brand & Origin | NIQUA SUPER Q® (Swiss Made) |
| Product Model / Range | Series 77 (Oval Burs) |
| Product Code | 03-240-060 through 03-240-080 |
| Bur Head Shape |
Oval / Elliptical |
| Material Construction | Hardened Tool Steel |
| Shank Diameter | Standard 2.35 mm (3/32”) |
| Compatible Metals | Gold, Silver, Copper, Brass, Soft Precious Metal Alloys |
| Primary Applications | Curved Surface Finishing, Transition Blending, Stone Setting Prep, Hollow Shaping |
| Rotary Equipment Compatibility | Jewelry Micromotors, Flex Shaft Systems, Rotary Handpieces |
Model & Size Dimension Matrix
| Bur Diameter (Ø mm) | Product Code |
| Ø 6.00 mm | 03 240 060 |
| Ø 7.00 mm | 03 240 070 |
| Ø 8.00 mm | 03 240 080 |
Achieve smooth concave shaping, seamless transition blending, and low-vibration rotary milling with authentic NIQUA SUPER Q® Oval Burs Series “77”. Manufactured to strict Swiss Made standards from high-grade hardened tool steel, this large-diameter rotary bur series is engineered specifically for professional goldsmiths, diamond setters, and fine jewelry manufacturing workshops.
Featuring a symmetrical elliptical/oval contour with radially ground cutting flutes, the Series “77” provides controlled material removal across concave hollows, rounded contours, and restricted setting areas. Its balanced curved profile distributes cutting pressure evenly across soft precious metals—such as yellow gold and silver—as well as copper, brass, and related soft alloys, eliminating tool gouging and harsh transition lines. Fitted with a standardized 2.35 mm (3/32”) shank, it integrates seamlessly into standard jewelry micromotors, flexible shaft handpieces, and quick-change bench systems across diameters of 6.00 mm, 7.00 mm, and 8.00 mm.
Key Features & Benefits
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Distinctive Oval Cutting Geometry: Elliptical head profile shapes and smooths hollow recesses, domed structures, and curved transition walls.
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Hardened High-Quality Tool Steel: Precision alloy composition provides high wear resistance, edge sharpness, and reliable cutting durability over extended bench runs.
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Smooth, Reduced-Vibration Operation: True-running concentricity minimizes handpiece chatter, protecting delicate gemstone settings and thin-walled castings.
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Clean, Uniform Material Removal: Precision-milled flutes slice smoothly through soft precious metals, preventing metal dragging and reducing subsequent polishing stages.
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Swiss Made Precision Quality: Built under strict Swiss manufacturing standards to ensure consistent dimensional accuracy across large bur head sizes.
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Standard 2.35 mm (3/32”) Shank: Precision ground to ensure universal fitment across standard bench micromotors, rotary handpieces, and flexible shaft systems.
Primary Application Sectors
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Sculpted Jewelry Fabrication, Hollow Back Blending & Cavity Hollowing
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Precision Stone Setting Preparation & Large Bezel Contour Adjustments
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Smoothing Solder Seams and Metal Transitions on Rings, Bangles & Castings
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Controlled Bench Machining on Gold, Silver, Brass, and Copper
Commercial Procurement & B2B Wholesale Supply
Whether equipping commercial jewelry manufacturing departments, master goldsmith studios, or expanding your retail bench tooling inventory, we supply authentic NIQUA SUPER Q® 77 oval burs with tiered volume wholesale pricing, consolidated export packaging, and reliable inventory fulfillment across Series 77. Click Get a Quote to connect with our B2B commercial sales desk for customized wholesale quotes and supply terms.
