Technical Specifications
| Parameter | Technical Specification |
| Brand & Origin | NIQUA SUPER Q® (Swiss Precision Quality) |
| Product Model / Range | Series 138 (Conical Carbide Burs) |
| Product Code | 03-245-008 through 03-245-023 |
| Bur Head Shape |
Cone / Tapered Cylinder with End Cut |
| Cut Style |
Cross-Cut / Chip Breaker Fluting |
| Material Construction | Premium Tungsten Carbide |
| Shank Diameter | Standard 2.35 mm (3/32”) |
| Compatible Materials | Gold, Silver, Hard Metals, Steel, Titanium, Glass, Ceramics |
| Primary Applications | Tapered Hole Milling, Channel Shaping, Setting Prep, Precision Engraving |
| Rotary Equipment Compatibility | Jewelry Micromotors, Flex Shaft Systems, Rotary Handpieces |
Model & Size Dimension Matrix
| Bur Diameter (Ø mm) | Product Code |
| Ø 0.80 mm | 03 245 008 |
| Ø 0.90 mm | 03 245 009 |
| Ø 1.00 mm | 03 245 010 |
| Ø 1.20 mm | 03 245 012 |
| Ø 1.40 mm | 03 245 014 |
| Ø 1.60 mm | 03 245 016 |
| Ø 1.80 mm | 03 245 018 |
| Ø 2.10 mm | 03 245 021 |
| Ø 2.30 mm | 03 245 023 |
Achieve clean tapered milling, controlled channel clearing, and chatter-free rotary cutting with authentic NIQUA SUPER Q® Conical Carbide Burs Series “138”. Manufactured to strict Swiss precision standards, this universal rotary bur series is engineered specifically for demanding jewelry manufacturing, precision engraving, stone setting prep, and professional metalworking.
Featuring a precision-ground conical head with cross-cut spiral chip breakers and an end-cutting face, the Series “138” delivers aggressive yet highly controlled material removal. The specialized flute geometry breaks chips into manageable fragments, preventing tool clogging and maintaining efficient cutting performance across soft precious metals like gold and silver, as well as tough materials including stainless steel, titanium, glass, and technical ceramics. 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 0.80 mm (03 245 008) to 2.30 mm (03 245 023).
Key Features & Benefits
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Conical Cross-Cut Flute Geometry: Tapered profile paired with transverse chip breaker notches splits metal swarf for smooth, clog-free cutting.
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High-Grade Solid Carbide Head: Delivers high wear resistance, thermal stability, and edge retention when cutting abrasive and hard metals.
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End-Cutting Tip Capability: Faceted top teeth allow direct axial plunge milling as well as lateral side contouring.
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Smooth, Low-Vibration Operation: Precision concentricity prevents tool chatter, protecting delicate claws, channels, and fine metalwork from damage.
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Swiss Precision Quality: Built under strict Swiss manufacturing standards to ensure consistent dimensional accuracy across all 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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Tapered Seat Sizing & Undercutting for Gemstone Settings
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Milling Angled Walls, Channels, and V-Slots in Custom Goldsmithing
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Detailed Engraving, Mold Rework & Die Sinking
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Machining Hard Metals, Platinum, Titanium, Glass, and Ceramics
Commercial Procurement & B2B Wholesale Supply
Whether outfitting high-volume jewelry manufacturing benches, setting studios, or expanding your retail bench tooling inventory, we supply authentic NIQUA SUPER Q® 138 conical carbide burs with tiered volume wholesale pricing, consolidated export packaging, and reliable inventory fulfillment across Series 138. Click Get a Quote to connect with our B2B commercial sales desk for customized wholesale quotes and supply terms.
