Technical Specifications
| Parameter | Technical Specification |
| Brand & Origin |
NIQUA SUPER Q® (Swiss Made) |
| Product Model / Range |
Series HB 70° (Models HB70-005 through HB70-023) |
| Product Code |
03-217-005 through 03-217-037 (Sizes 03 217 005 to 03 217 023 listed) |
| Bur Head Shape |
Double Cone / Bearing Cutter 70° (Series HB) |
| 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, Setting Undercuts, Tight Contours, Fine Engraving |
| Rotary Equipment Compatibility |
Jewelry Micromotors, Flex Shaft Systems, Rotary Handpieces |
Model & Size Dimension Matrix
| Bur Diameter (Ø mm) | Product Model | Product Code |
|
Ø 0.50 mm |
HB70-005 |
03 217 005 |
|
Ø 0.60 mm |
HB70-006 |
03 217 006 |
|
Ø 0.70 mm |
HB70-007 |
03 217 007 |
|
Ø 0.80 mm |
HB70-008 |
03 217 008 |
|
Ø 0.90 mm |
HB70-009 |
03 217 009 |
|
Ø 1.00 mm |
HB70-010 |
03 217 010 |
|
Ø 1.10 mm |
HB70-011 |
03 217 011 |
|
Ø 1.20 mm |
HB70-012 |
03 217 012 |
|
Ø 1.30 mm |
HB70-013 |
03 217 013 |
|
Ø 1.40 mm |
HB70-014 |
03 217 014 |
|
Ø 1.50 mm |
HB70-015 |
03 217 015 |
|
Ø 1.60 mm |
HB70-016 |
03 217 016 |
|
Ø 1.70 mm |
HB70-017 |
03 217 017 |
|
Ø 1.80 mm |
HB70-018 |
03 217 018 |
|
Ø 1.90 mm |
HB70-019 |
03 217 019 |
|
Ø 2.00 mm |
HB70-020 |
03 217 020 |
|
Ø 2.10 mm |
HB70-021 |
03 217 021 |
|
Ø 2.20 mm |
HB70-022 |
03 217 022 |
|
Ø 2.30 mm |
HB70-023 |
03 217 023 |
Achieve precise seat undercuts, clean faceted bearing shoulders, and controlled detail engraving with authentic NIQUA SUPER Q® Double Cone Burs Series “HB 70°” (Bearing Cutter). Precision-manufactured from hardened premium tool steel in genuine Swiss Made quality, this rotary bur series is engineered specifically for professional goldsmiths, fine diamond setters, and precision jewelry manufacturers.
Featuring an angled 70° double cone geometry with radially ground cutting flutes, the Series “HB 70°” cuts horizontal gemstone bearing seats and sharp internal contours across soft precious metals like gold and silver, as well as copper, brass, and related alloys. Its balanced design ensures smooth, low-vibration operation and consistent cutting performance even at high rotational speeds, preventing chatter and workpiece damage during delicate stone-setting tasks. 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.
Key Features & Benefits
-
Specialized 70° Double Cone Geometry: The 70° profiled head cuts matched bearing recesses for stone girdles and shapes sharp, angular transitions in tight setting spaces.
-
Hardened Premium Tool Steel: Precision alloy composition provides high wear resistance and extended edge sharpness throughout daily workshop 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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Consistent High-Speed Cutting: Maintains uniform chip clearance and cutting efficiency across elevated motor speeds without metal dragging.
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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 fit all standard micromotor chucks, flex shaft handpieces, and rotary bench tools.
Primary Application Sectors
-
Gemstone Bearing Seat Cutting & Prong Notching in Pavé and Prong Settings
-
Fine V-Groove Decorative Engraving & Detailed Metal Relief
-
Tight Contour Machining & Undercutting in Goldsmithing
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Precision Bench Work on Gold, Silver, Brass, and Copper Alloys
Commercial Procurement & B2B Wholesale Supply
Whether equipping commercial jewelry production lines, stone setting workshops, or expanding your retail bench tooling inventory, we supply authentic NIQUA SUPER Q® HB 70° double cone bearing burs with tiered volume wholesale pricing, consolidated export packaging, and reliable inventory fulfillment across Series HB 70°. Click Get a Quote to connect with our B2B commercial sales desk for customized wholesale quotes and supply schedules.
