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High Speed Steel Ball Burs, Round Set Of 25 – Precision HSS Jewelry Bur Set
High Speed Steel Burs Round Set Of 25 - Carving, Engraving & Polishing Tools
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Spanish Name: FRESAS DE ALTA VELOCIDAD, EQUIPO DE 25 (REDONDO)


Product Code: B246
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Description Technical Specs
 

The High Speed Steel Ball Burs, Round Set Of 25 is a premium-grade bur collection engineered for jewelers who demand accuracy, durability, and fine detailing in every stage of metalwork. Manufactured from high-performance High Speed Steel (HSS), these round burs deliver exceptional cutting strength and long-lasting edge retention, making them an essential addition to any professional bench setup.

Each bur in this 25-piece set is precision-ground for clean, controlled cutting, ensuring superior performance when shaping, engraving, drilling, or preparing stone seats. The balanced design minimizes vibration during high-RPM operation, allowing for smooth rotation, reduced heat buildup, and improved tool control. Whether working with gold, silver, platinum, brass, or other non-ferrous metals, these burs maintain their sharpness and dimensional accuracy even during extended use.

The complete size range included in this set allows artisans to execute detailed tasks with consistency and efficiency. From micro-fine carving to larger metal removal, the assortment provides full flexibility for stone setters, bench jewelers, and metalsmiths engaged in precision work. Their standard 3/32 inch shank size ensures compatibility with all major flex-shaft machines, micromotors, and rotary handpieces used across the jewelry industry.

Professionally designed, accurately machined, and built for longevity, the High Speed Steel Ball Burs set delivers consistent cutting performance that supports high-level craftsmanship. For jewelers seeking reliability and precision in every cut, this round bur set is a dependable, long-term investment in productivity and quality.

Key Benefits

  • Precision Machining: Produces accurate, clean cuts ideal for fine jewelry work
  • Extended Tool Life: High Speed Steel construction ensures superior durability
  • Full Size Assortment: Complete 25-piece set supports a wide range of applications
  • Consistent Performance: Reduced heat and vibration for smooth high-speed operation
  • Professional Use: Designed for stone setting, texturing, shaping, and engraving
Features
  • Premium High Speed Steel for long-lasting sharpness

  • Round ball bur design for uniform cutting and smooth metal removal

  • 25 expertly machined sizes for complete jewelry application needs

  • Precision-ground flutes for clean, accurate detailing

  • Ideal for stone setting, texturing, deburring, and precision shaping

  • Stable performance under high-RPM operation

  • Compatible with most rotary tools with 3/32 inch collet

  • Engineered to withstand continuous use on precious and semi-precious metals

  • Organized storage for quick identification and access

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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