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Precision‑engineered for detailed work, our Size 4 (1.5) Bearing 90° High‑Speed Bur is an essential tool for professionals and DIYers alike. Crafted from rugged tungsten carbide, this bur excels at high-speed rotation and demanding tasks — reliably cutting, grinding, and shaping materials like metals, plastics, wood, and ceramics.
Whether you’re refining fine jewelry, doing intricate model work, or tackling small fabrication jobs, this bur delivers the control and durability you depend on.
Key Benefits:
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Superior Durability: Built to withstand intense speeds and heavy duty use for prolonged performance.
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Precision Cutting: Achieve clean, accurate, and detailed cuts effortlessly.
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Efficient Grinding & Shaping: Removes material swiftly and shapes surfaces with minimal effort.
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Versatile Applications: Perfect for everything from industrial tasks to detailed DIY and craft projects across a variety of materials.
- Material - Tungsten Carbide
- Size - 4 (1.5)
- Bearing - 90°
- Shank Diameter - 3/32″ (≈ 2.35 mm)
- Cut / Length (In/Pul) - 0.059″
- Recommended Speed Range - For sizes above ISO 010: approx. 150,000–200,000 RPM.
- Compatibility - Fits standard high‑speed rotary tools / handpieces
- Typical Applications - Precision cutting, grinding, shaping & 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: Manufactured using high‑quality fine‑grain tungsten carbide for exceptional strength, heat resistance, and long service life.
- Ultra‑Sharp Cutting Edges: Precision‑ground blade geometry achieves clear, clean cuts and smooth grinding across metals, plastics, wood, ceramics and more.
- 90° Bearing Design: Ensures stable, balanced rotation with minimal vibration and chatter, yielding a smoother finish and better control.
- High‑Speed Efficiency: Engineered for use with high‑speed rotary tools, enabling rapid material removal without sacrificing precision.
- Versatile Application: Suitable for a wide array of tasks including metal shaping, wood carving, plastic fabrication, stone setting, jewelry making, and surface finishing.
- Reduced Vibration & Enhanced Finish: Precision manufacturing and material choice reduce vibration and operator fatigue — delivering a smoother surface finish.
- Extended Tool Life: High‑grade carbide resists wear, chipping, and dulling, ensuring longer usage and better value over time.
- Compact & Precision‑Ready Size: Size 4 (1.5) allows access to tighter areas and fine detail work — ideal for intricate tasks demanding control and accuracy.
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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