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Crafted from high-grade tungsten vanadium steel, the Busch® 90° Hart Bur (ISO #017, Fig. 156C) delivers exceptional strength and durability for precision jewelry work. Manufactured in Germany to exacting standards, these burs are trusted by professionals for their consistent sharpness and smooth, even cutting performance. Featuring a 90° Hart angle, this bur is ideal for detailed tasks such as prong shaping, edge refinement, and delicate finishing on a variety of metals. The 1.70 mm cutting head provides an excellent balance of precision and durability, perfect for intricate work.
With a 3/32" (2.38 mm) shank diameter and an overall length of 1-3/4" (44.5 mm), these burs fit most standard rotary tools, offering versatility and ease of use in any jeweler’s workshop.
Brand: Busch®
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Type: 90° Hart Bur
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ISO Number: #017
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Figure: 156C
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Cut Type: Cross-cut
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Shape: Cylinder Square
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Head Diameter: 1.70 mm
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Shank Diameter: 3/32" (2.38 mm) – compatible with most rotary tools, flex shafts, and micromotors
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Overall Length: Approximately 1-3/4" (44.5 mm)
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Quantity: Pack of 6
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Material: High-grade tungsten vanadium steel for enhanced durability and long-lasting sharpness
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Origin: Manufactured in Germany
Additional Information
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Features precision-machined, uniformly spaced teeth for smooth, accurate cutting and detailed shaping.
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Maximum safe operating speed varies by bur size and is clearly indicated on packaging.
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Designed for professional jewelers and metalworkers demanding precision and reliability.
Usage Instructions
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Secure the bur firmly in a rotary tool, flex shaft, or Dremel handpiece.
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Use with light pressure for optimal control and to extend tool life.
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Apply a lubricant such as Busch Lube-Stik to minimize friction and maintain sharpness.
Safety Information
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Always wear protective eyewear when operating rotary tools.
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After use, clean burs gently with a soft cloth to preserve sharpness and ensure consistent performance.
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Features
Premium Material: Crafted from high-quality tungsten vanadium steel, ensuring exceptional durability and long-lasting sharpness.
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Precision-Cut Teeth: Uniformly spaced, precision-machined cross-cut teeth deliver smooth, accurate, and consistent cutting performance.
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90° Hart Angle: Engineered for superior control and precision in detailed jewelry-making tasks like prong shaping and edge refinement.
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Head Diameter: 1.70 mm size ideal for intricate work in tight or small settings requiring fine detail.
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Compatible Shank: Standard 3/32" (2.38 mm) shank diameter fits most rotary tools, flex shafts, and micromotors for versatile use.
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Optimal Length: Approximately 1-3/4" (44.5 mm) overall length provides comfortable handling and better maneuverability.
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Cross-Cut Design: Enhances material removal efficiency while maintaining a smooth finish on a variety of metals and alloys.
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Versatile Application: Suitable for gem setting, shaping, engraving, texturing, and polishing across multiple jewelry-making processes.
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German Engineering: Manufactured in Germany, synonymous with precision craftsmanship and reliable performance.
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Pack Quantity: Supplied as a pack of 6 burs, offering great value and consistent supply for regular professional use.
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