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Precision‑engineered for detailed, high‑quality work, our Size 5 (1.7) Bearing 90° high‑speed burs are essential tools for professionals and DIY creators alike. Crafted from rugged, fine‑grain tungsten carbide, these burs excel at fast, accurate cutting, grinding, shaping, and finishing across a wide range of materials—including metals, plastics, wood, and ceramics. With their robust construction and 90° bearing design, these burs deliver smooth, controlled rotation and less vibration—giving you cleaner results and more consistent finishes. Whether you’re shaping intricate jewelry, cleaning up metal castings, carving wood, or working with tough plastics and ceramics, these burs offer the precision and durability required to get the job done right. Key Benefits:
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Superior Durability: Built to perform in demanding conditions, withstand high speeds and retain cutting sharpness over extended use.
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Precision Cutting: Engineered to provide accurate, fine cuts and detailed shaping—ideal for intricate components and small‑scale work.
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Efficient Grinding & Finishing: Designed for fast and smooth removal of material, enabling efficient surface preparation, shaping, and refinement.
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Versatile Applications: Suitable for a variety of settings—from industrial workshops to DIY studios and craft desks—handling everything from jewelry making and metalwork to woodworking and ceramic shaping.
- Material - Tungsten Carbide
- Size (Head Diameter) - 4 (1.5 mm)
- Bearing Angle - 90°
- Shank Diameter - 3/32″ (≈ 2.35 mm)
- Cut/Length (In/Pul.) - 0.059″
- Recommended Speed Range - For burs ISO size ≤‑012, speeds up to ~300,000 RPM per manufacturer guidelines.
- Compatibility - Fits standard 3/32″ high‑speed rotary handpieces
- Applications - Precision cutting, grinding, shaping, deburring 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: These burs are crafted from premium tungsten‐carbide material, the same ultra‑hard tooling material used in the toughest industrial cutter applications.
- Ultra‑Sharp Cutting Edges: Precision‑machined flutes and blade geometry ensure clean, efficient cuts with minimal chatter—improving finish quality and reducing operator fatigue.
- 90° Bearing Design for Balanced Rotation: The 90° bearing design enables smooth, stable rotation and minimal vibration, improving control and surface finish consistency during intricate work.
- Versatile Use Across Materials & Applications: Ideal for professionals and hobbyists alike—capable of cutting, shaping, grinding, deburring metals, plastics, wood, ceramics and more.
- Enhanced Efficiency & Material Removal Speed: Thanks to the tungsten carbide’s hardness, these burs cut faster, with less heat generation and longer sharpness retention — leading to higher productivity and fewer tool changes.
- Reduced Vibration & Improved Control: High concentricity and precision manufacturing reduce tool‑vibration and “chatter”, offering better feel and more accurate control in detailed tasks.
- Extended Tool Life & Value‑Driven: Tungsten carbide resists wear, dulling and chipping far better than conventional steel burs—resulting in longer service life and a better return on investment.
- Compact Size for Precision Access: The Size 5 (1.7) dimension is ideal for detailed work, allowing access to tighter areas and smaller work zones while retaining durability and performance.
- Ready‑for Standard Handpieces: Designed to be compatible with most 3/32″ (≈ 2.35 mm) shank high‑speed handpieces out‑of‑the‑box—no special adapters required.
High Speed Bur Size Convertion Chart |
| SIZE |
MM |
IN/PUL. |
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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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