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High Speed Steel Cylinder Bur #30 (8mm) - 3/32" Shank
High Speed Steel Cylinder Bur #30 (8mm) with 3/32" shank — precision M2 HSS rotary bur for jewelry making, metalworking, and wax carving.
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Spanish Name: FRESAS DE ALTA VELOCIDAD, TAMAÑO 30 Cilindro


Product Code: B267-30
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Description Technical Specs
 

Engineered for precision and endurance, the High Speed Steel Cylinder Bur #30 (8mm) is expertly crafted from premium M2 High Speed Steel (HSS) — a material renowned for its hardness, heat resistance, and exceptional edge retention. This robust bur delivers consistent performance in jewelry making, metalworking, model making, and wax carving, making it an essential tool for professionals and serious hobbyists alike.

The spiral-cut flutes are designed for smooth, efficient cutting and controlled chip removal, reducing friction and preventing material buildup. Acting like a miniature rotary file, this bur allows for fast yet precise shaping, refining, and smoothing of metal, wax, and other materials. Its larger 8mm diameter provides greater surface coverage and control, making it ideal for enlarging ring shanks, refining castings, sculpting wax models, and shaping contours with precision and ease.

The standard 3/32" (2.35mm) shank fits most flex shafts, micromotors, and rotary tools, offering broad compatibility and stable, vibration-free operation at high speeds.

Key Features:

  • Premium M2 High Speed Steel Construction: Exceptional durability, wear resistance, and cutting performance — engineered to maintain sharpness through extensive use.

  • Precision Spiral-Cut Flutes: Designed for smooth, efficient chip evacuation, minimizing loading and heat buildup while ensuring clean, accurate cuts.

  • Large 8mm Diameter (#30): Ideal for removing larger amounts of material, enlarging holes, and refining broad surfaces with control and precision.

  • Universal 3/32" (2.35mm) Shank: Compatible with most rotary tools, flex shafts, and micromotors used in jewelry and metalworking studios.

  • Versatile Application: Perfect for jewelry making, wax carving, metal shaping, model work, and fine detail finishing.

  • Superior Longevity: Outlasts tungsten, vanadium, and carbon steel burs, delivering consistent results over time.

  • Heat and Corrosion Resistant: Withstands high operating temperatures and resists wear and oxidation.

  • Balanced for Stability: Precision-ground to reduce vibration and operator fatigue, allowing smoother, more controlled operation.
Features

  • Premium M2 High Speed Steel (HSS) Construction: Crafted from top-grade M2 HSS for superior hardness, wear resistance, and long-lasting cutting performance — even under demanding, high-speed conditions.

  • Large 8mm Cylinder Head (Bur #30): Ideal for rapid material removal, enlarging ring shanks, refining broad surfaces, and shaping larger areas with precision and control.

  • Sharp, Precision-Ground Cutting Edges: The carefully machined tip ensures clean, accurate cuts and engravings on metal, wax, wood, and plastic without burrs or chipping.

  • Spiral Cross-Cut Flutes: Designed for smooth cutting action, efficient chip removal, and reduced heat buildup, preventing loading or clogging during use.

  • 3/32" (2.35mm) Standard Shank: Universally compatible with most rotary tools, flex shafts, micromotors, and handpieces, ensuring a secure fit and stable rotation.

  • Durable and Long-Lasting: Engineered to outperform tungsten, vanadium, and carbon steel burs — maintaining edge sharpness through continuous professional use.

  • Excellent Balance and Vibration Control: Precision-ground for smooth operation and reduced vibration, offering better control and comfort during detailed work.

  • Heat and Corrosion Resistant: Withstands high operating temperatures while resisting rust and oxidation for consistent, reliable performance over time.

  • Versatile Application Range: Perfect for jewelers, metalworkers, wax carvers, and hobbyists — suitable for engraving, shaping, deburring, carving, and finishing.

  • High-Speed Capability: Operates efficiently at speeds up to 30,000 RPM, providing fast material removal while maintaining accuracy and surface quality.

High Speed Bur Size Convertion Chart
SIZE MM IN/PUL. SIZE MM IN/PUL.
1 1.05 0.035 18 4.5 0.177
2 1.2 0.043 19 4.7 0.185
3 1.35 0.051 20 5 0.197
4 1.5 0.059 22 5.2 0.204
5 1.7 0.067 23 5.4 0.212
6 1.9 0.075 24 5.6 0.22
7 2.1 0.083 25 5.9 0.232
8 2.3 0.09 26 6.3 0.248
9 2.5 0.098 27 6.7 0.263
10 2.7 0.106 28 7.2 0.283
11 2.9 0.114 29 7.6 0.299
12 3.1 0.122 30 8 0.314
13 3.3 0.13 31 8.9 0.35
14 3.5 0.138 32 9.6 0.377
15 3.8 0.149 33 10.4 0.409
16 4 0.157 34 11 0.437
17 4.3 0.169

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