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  6. 【For medical devices】Gemstone (alumina bearings)

【For medical devices】Gemstone (alumina bearings)

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last updated:Jan 28, 2026

Citizen Finedevice Co.,Ltd
Citizen Finedevice Co.,Ltd
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Supporting high-precision rotation! Improving the reliability of medical devices.

In the medical device industry, precise operation and high reliability are required. Particularly in rotating components, it is important to minimize friction and wear to maintain stable performance over a long period. Low bearing accuracy can lead to equipment malfunctions or failures, potentially jeopardizing patient safety. Citizen Fine Devices' gem (alumina bearings) contribute to improving the reliability of medical devices due to their high wear resistance and high dimensional accuracy. 【Application Scenarios】 - Surgical robots - Analytical instruments - Imaging diagnostic devices 【Benefits of Implementation】 - Achievement of high-precision rotational performance - Extension of equipment lifespan - Improvement of patient safety

    Plastic bearings
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【For medical devices】Gemstone (alumina bearings)

2021-09-30_09h45_40.png
2021-09-30_09h45_40.png
  • Related Link - https://cfd.citizen.co.jp/aluminaruby/
  • Special site - Product/service details - https://pr.mono.ipros.com/cfd-citizen/product/

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【Features】 - High wear resistance - High dimensional accuracy - Consistent processing for a variety of products and mass production - Transparency close to that of synthetic ruby - Possibility of providing blanks with dimensions close to completion through near-net-shape molding 【Our Strengths】 Citizen Fine Devices leverages the technology cultivated over many years in the field of functional components that require small size, precision, and high detail to offer high value-added microdevice products. Through a consistent production line from process design to machining, assembly, and functional testing, as well as the unique development of our own processing machines, we have supplied small, high-precision components to our customers for many years.

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Applications/Examples of results

【Usage Examples】 ■Movement for wristwatches ■Signal indicator ■Analog meter *For more details, please refer to the PDF document or feel free to contact us.

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Aluminaruby (alumina bearing)

Aluminaruby (alumina bearing)

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High-performance, high-precision ceramic components of Citizen Fine Devices.

High-performance, high-precision ceramic components of Citizen Fine Devices.

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Company information

Citizen

Citizen Finedevice Co.,Ltd

Ceramics

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The area where Citizen Fine Devices demonstrates its strength is in the realm of functional components that require small size, precision, high accuracy, and high detail. We believe that our mission is to continue providing high-value-added microdevice products by leveraging the unique technologies we have developed over many years. Utilizing metal processing technology rooted in watch manufacturing, we have consistently supplied small, high-precision components to our customers for many years through a fully integrated production line that encompasses process design, machining, assembly, and functional testing, along with the unique development of our own processing machines. Additionally, mass-producing components with high precision and efficiency using brittle materials is also one of our core technologies. By integrating material technology with ultra-precision machining, thin-film technology, and bonding technology, we produce not only high-precision components such as ceramics and quartz but also high-quality functional device products like liquid crystal devices and sensing devices. Continuing to provide high-value-added products to the market is a significant dream for our employees. We will contribute to the creation of new value through manufacturing driven by the challenge spirit of each individual, working towards the realization of that dream.

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