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Elevate your jewelry‑making precision with our Size 5 (1.7) Bearing 90° High‑Speed Bur, crafted from premium tungsten carbide for durability and performance. Designed to surpass traditional vanadium‑steel burs, this tool offers exceptional cutting efficiency and longer service life thanks to its superior material construction. With a 3/32″ shank diameter, it is compatible with most standard handpieces, making it easy to integrate into your existing toolkit. Whether you’re working with precious metals, engraving, polishing, or shaping components, this bur delivers precision, control, and versatility. Key Benefits: - Exceptional Durability: The tungsten carbide construction withstands heavy use and retains sharpness far longer than conventional tools.
- Superior Cutting Efficiency: Sharp cutting edges provide cleaner, faster material removal — reducing workload and improving finish quality.
- Versatile Applications: Ideal for jewelry‑making techniques including metalworking, engraving, polishing—and also suitable for wood, plastic, and ceramic tasks.
- Easy to Use: Designed for straightforward compatibility with most standard handpieces thanks to its 3/32″ shank, providing a seamless fit into your workflow.
- Material- High‑Speed Steel (Grade M2) — commonly used for jeweler’s burs.
- Size (Head Diameter) - Size 9 (~2.5 mm)
- Bearing Angle - 90°
- Shank Diameter - 3/32″ (≈ 2.35 mm)
- Hardness (Rockwell C) - Approximately 63‑65 HRC as typical for M2 steel burs.
- Cut / Length (Inches) - 0.090″
- Flute / Cut Design - Spiral cut design to increase performance, retain sharpness, and reduce loading.
- Recommended Speed Range - Compatible with standard high‑speed rotary handpieces; specific RPM depends on tool/diameter.
- Compatibility - Fits standard 3/32″ shank handpieces and rotary tools.
- Applications - Precision cutting, shaping, grinding and polishing of metals, plastics, wood, ceramics.
Safety Note:
Please be careful when using high speed burs, as they can rotate at very high speeds. Always wear safety glasses and gloves when using high speed burs.
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Features
- Durable Tungsten Carbide Construction: Made from premium tungsten‑carbide—an ultra‑hard material that resists wear and retains sharpness much longer than steel or conventional burs.
- Ultra‑Sharp Cutting Edges: Precisely machined flutes produce cleaner and more efficient material removal—ideal for detailed cutting, grinding and shaping tasks across a variety of materials.
- 90° Bearing Design for Balanced Operation: Ensures the bur rotates smoothly with high concentricity, reducing vibration, increasing control and improving finish quality even at high speeds.
- Versatile Application Across Materials: Engineered for use on metals, plastics, wood and ceramics—perfect for professionals and DIY enthusiasts alike engaging in metalworking, woodworking, polishing and detailed finishing.
- High Efficiency & Productivity: The hard material and sharp geometry deliver faster cutting, less loading and reduced tool changes—resulting in improved workflow and better value over time.
- Reduced Vibration & Better Comfort: High‑concentricity manufacturing helps minimize chatter and vibration during operation—leading to smoother control, less fatigue and improved surface results.
- Extended Tool Life for Better ROI: With the superior wear resistance of tungsten carbide, these burs maintain performance far longer—reducing the need for frequent replacements and lowering long‑term costs.
- Optimized Size (Size 9) for Detail & Stability: The Size 9 head offers a balance of reach and precision—allowing access into tighter working areas while providing enough mass for stability during heavier shaping tasks.
- Standard Shank Compatibility: Designed with a widely used shank size (e.g., 3/32″) that fits most handpieces and rotary tools—making it easy to integrate into your existing toolkit without special adapters.
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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