Technical Specifications
| Parameter | Technical Specification |
| Brand & Origin | NIQUA SUPER Q® (Swiss Made) |
| Product Model / Range | Series 78 (Rounded Cylinder Burs) |
| Product Code | 03-246-060 through 03-246-080 |
| Bur Head Shape |
Rounded Cylinder / Ball-Nosed Cylinder |
| 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 |
Flat Surface Machining, Corner Blending, Stone Seat Prep, Channel Leveling |
| Rotary Equipment Compatibility | Jewelry Micromotors, Flex Shaft Systems, Rotary Handpieces |
Model & Size Dimension Matrix
| Bur Diameter (Ø mm) | Product Code |
| Ø 6.00 mm | 03 246 060 |
| Ø 7.00 mm | 03 246 070 |
| Ø 8.00 mm | 03 246 080 |
Achieve uniform surface leveling, smooth corner transitions, and vibration-free rotary metalworking with authentic NIQUA SUPER Q® Rounded Cylinder Burs Series “78”. Manufactured to strict Swiss Made standards from high-grade hardened tool steel, this large-diameter rotary bur series is engineered specifically for professional goldsmiths, stone setters, and fine jewelry manufacturing workshops.
Featuring a parallel cylindrical body paired with a dome-rounded nose and longitudinal cutting flutes, the Series “78” provides versatile machining control across flat planar areas, internal recesses, and stone seat foundations. The rounded shoulder transitions smoothly into surrounding metal walls, eliminating the sharp gouges or hard steps typically left by square-ended cylinder burs. It cuts cleanly through soft precious metals—such as yellow gold and silver—as well as copper, brass, and related soft alloys without tool chatter or metal dragging. 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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Rounded Cylinder Cutting Geometry: Combines a flat cylindrical flank for lateral milling with a radiused dome nose for seamless corner blending.
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Hardened High-Grade Tool Steel: Tough alloy composition provides high wear resistance and extended edge sharpness throughout daily workshop use.
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Smooth, Low-Vibration Operation: True-running concentricity minimizes handpiece chatter, protecting delicate gemstone settings and thin-walled castings.
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Clean, Controlled Material Removal: Finely pitched teeth slice 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 compatibility with standard bench micromotors, rotary handpieces, and flexible shaft systems.
Primary Application Sectors
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Flat Surface Machining, Internal Recess Leveling & Heavy Mounting Prep
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Large Gemstone Seat Preparation, Bezel Cavity Sizing & Gallery Hollowing
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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 Alloys
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® 78 rounded cylinder burs with tiered volume wholesale pricing, consolidated export packaging, and reliable inventory fulfillment across Series 78. Click Get a Quote to connect with our B2B commercial sales desk for customized wholesale quotes and supply terms.
