Technical Specifications
| Parameter | Technical Specification |
| Brand & Origin |
NIQUA SUPER Q® (Swiss Made) |
| Product Range | Series HD(f) 90° |
| Product Code |
03 218 005 through 03 218 050 |
| Bur Head Shape |
Double Cone / Bearing Cutter 90° (Series HD) |
| Cut Style |
Fine Cut (f) |
| Material Construction |
Hardened Premium Tool Steel |
| Shank Diameter |
Standard 2.35 mm (3/32”) |
| Compatible Metals |
Gold, Silver, Copper, Brass, Soft Alloys |
| Primary Applications |
Bearing Seat Cutting, Countersinking, Fine Engraving, Edge Finishing |
| Rotary Equipment Compatibility |
Jewelry Micromotors, Flex Shaft Systems, Rotary Handpieces |
Model & Size Dimension Matrix
Achieve precise stone bearing seats, clean chamfers, and controlled edge countersinking with authentic NIQUA SUPER Q® Double Cone Burs Series “HD(f) 90°” (Bearing Cutter). Precision-manufactured from hardened premium tool steel in genuine Swiss Made quality, this high-precision rotary bur series is engineered specifically for professional goldsmiths, diamond setters, and fine jewelry production ateliers.
Featuring a specialized 90° double cone geometry paired with a fine cut (f) fluting pattern, the Series “HD(f) 90°” allows delicate, chatter-free cutting across soft precious metals like gold and silver, as well as copper, brass, and related alloys. The 90° angle matches standard gemstone pavilions to cut uniform bearing notches in prongs and bezels without overcutting surrounding metal. 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 from 0.50 mm (03 218 005) up to 5.00 mm (03 218 050).
Key Features & Benefits
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Specialized 90° Double Cone Geometry: The calibrated 90° profile cuts matched bearing notches for brilliant-cut stone girdles, deburrs hole rims, and forms precise countersinks.
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Fine Cut (f) Toothed Fluting: Close-spaced fine-cut flutes ensure controlled, delicate material removal, producing smooth surface finishes without grabbing ductile alloys.
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Hardened Premium Tool Steel: Precision alloy composition provides high wear resistance and extended cutting edge longevity under continuous daily bench use.
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Smooth, Low-Vibration Operation: High concentricity reduces runout and vibration, protecting delicate prongs, pavé channels, and thin bezels from distortion.
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Swiss Made Precision Quality: Built to strict Swiss manufacturing standards for reliable dimensional accuracy on delicate jewelry and fine engraving work.
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Standard 2.35 mm (3/32”) Shank: Precision ground to ensure universal compatibility with standard bench micromotors, rotary handpieces, and flex shaft systems.
Primary Application Sectors
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Gemstone Bearing Seat Cutting in Pavé, Channel & Prong Settings
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Precision Hole Countersinking & Chamfering in Goldsmithing
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Fine V-Groove Detailing & Decorative Line Engraving
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Micro-Machining on Gold, Silver, Brass, and Copper Alloys
Commercial Procurement & B2B Wholesale Supply
Whether outfitting high-volume jewelry manufacturing benches, stone setting workshops, or expanding your retail bench tooling inventory, we supply authentic NIQUA SUPER Q® HD(f) 90° double cone bearing burs with tiered volume wholesale pricing, consolidated export packaging, and reliable batch replenishment across Series HD(f) 90°. Click Get a Quote to connect with our B2B commercial sales desk for customized wholesale quotes and supply schedules.
