Sapphire bearings are precision components made from synthetic sapphire, a form of corundum known for its exceptional hardness and durability. These bearings consist of metal spindles rotating within jewel-lined pivot holes, typically shaped like a torus and slightly larger than the shaft diameter. The use of synthetic sapphire ensures high dimensional accuracy, low friction, and excellent temperature stability, making them ideal for applications requiring long life expectancy and reliability. Commonly utilized in mechanical watches, sensitive measuring instruments, and various industrial applications, sapphire bearings offer superior performance compared to traditional materials, maintaining smooth operation over extended periods without lubrication.
Our company, ZMSH, has been a prominent player in the semiconductor industry for over a decade, boasting a professional team of factory experts and sales personnel. We specialize in providing customized sapphire wafer solutions, offering both tailored designs and OEM services to meet diverse client needs. At ZMSH, we are committed to delivering products that excel in both price and quality, ensuring customer satisfaction at every stage. We invite you to contact us for more information or to discuss your specific requirements.
Sapphire bearing Tecnical Parameters
Outside Diameter (D) | Diameter from 0.5mm to 200mm |
Tolerance of "D" | 0.004 - 0.05mm |
Height (t) | 0.10 - 200mm |
Tolerance of "t" | +/-0.01m |
Inner Diameter (d) | 0.05 - 180mm |
Tolerance of "d" | 0.004 - 0.06mm |
"R" of Inner hole | >2t |
SR Cup/Raised curvature radius | >0.45mm |
Surface Roughness | Working surface: Rz0.05-Rz0.2, Assembly and sink surface: Rz3. 2 |
Sapphire bearing Applications
Sapphire bearings, renowned for their exceptional hardness and durability, are integral components in various precision instruments and devices. Key applications include:
The unique properties of sapphire, such as high hardness and low friction, make these bearings ideal for applications requiring long-term precision and reliability.
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Q: What are the advantages of using sapphire bearings over traditional materials?
A: Sapphire bearings offer high accuracy, low and predictable friction, excellent temperature stability, and the ability to operate without lubrication in corrosive environments. Their hardness and durability make them ideal for precision instruments.
Q: In which applications are sapphire bearings commonly used?
A: Sapphire bearings are widely used in mechanical watches to reduce friction and wear, improving accuracy and longevity. They are also utilized in sensitive measuring instruments, aerospace navigation systems, and various industrial applications requiring precision and durability.
Q: How do sapphire bearings perform under different environmental conditions?
A: Sapphire bearings exhibit excellent performance across various environmental conditions. They maintain dimensional accuracy and low friction under temperature variations and can operate without lubrication, making them suitable for use in corrosive environments.