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  1. Home
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  3. Citizen Finedevice Co.,Ltd
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Ceramics
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Citizen Finedevice Co.,Ltd

EstablishmentApril 1, 2015
capital175312Ten thousand
number of employees902
addressNagano/Miyota-cho, Kitasaku-gun/4107-5 Ooyata, Daiji
phone0267-32-3232
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last updated:Feb 19, 2026
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Citizen Finedevice Co.,Ltd Product Lineup

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MEMS technology MEMS technology
Liquid Crystal Microdisplay Liquid Crystal Microdisplay
Dissimilar material bonding Dissimilar material bonding
Microplate Microplate
Microchannel Microchannel
Precision fixtures and precision molds Precision fixtures and precision molds
Thin film circuit substrate (submount/carrier) Thin film circuit substrate (submount/carrier)
Crystal oscillator, crystal resonator Crystal oscillator, crystal resonator
Ceramic sliding bearing Ceramic sliding bearing
Gemstone (Alumina Bearing) Gemstone (Alumina Bearing)
Samarium cobalt micro magnet Samarium cobalt micro magnet
Optical current probe sensor Optical current probe sensor
Automation and labor-saving equipment Automation and labor-saving equipment
Small automobile parts Small automobile parts
Combustion pressure sensor/cylinder pressure sensor Combustion pressure sensor/cylinder pressure sensor
Motor Motor
Ceramic

Ceramic sliding bearing

Introducing ceramic sliding bearings.

High-precision ceramic sliding bearings *Integrated production from granulation to processing

Do you have concerns about issues such as specified surface roughness, clearance accuracy, cylindricity accuracy, or dimensional accuracy being poor?

We have developed high-precision, high-durability ceramic sliding bearings by applying the molding technology and ultra-precision processing techniques cultivated in the manufacturing of watch bearing stones. Due to their high reliability, we have received numerous inquiries and are supplying them to the market. Our unique precision inner diameter grinding technology and cylindrical grinding technology achieve a level of precision and surface roughness that surpasses that of metal bearings, contributing to high wear resistance, excellent quietness, and extended lifespan. Additionally, ceramics excel in wear resistance, which reduces the generation of wear particles, and their high rigidity prevents deformation even when subjected to impacts such as drops. Leveraging our advanced production technology, we deliver mass-produced, consistently high-quality bearings. ■ Features Our near-net shaping, honed through the manufacturing of watch bearing stones, minimizes unnecessary material input and excessive waste from grinding, contributing to the SDGs. We use zirconia material with a thermal expansion coefficient close to that of SUS materials commonly used for shafts. ■ Molding and precision processing technologies developed in the manufacturing of watch bearing stones ■ Achieving superior inner diameter precision and surface roughness compared to metal using precision inner diameter grinding technology ■ Contributing to noise reduction and extended lifespan due to high wear resistance ■ Reducing the generation of wear particles due to excellent wear resistance ■ High rigidity prevents deformation even when subjected to impacts such as drops.

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Metal alternatives! Lightweight and excellent wear resistance ceramic parts and bearings.

How about high-precision ceramic parts that are lightweight, wear-resistant, and environmentally resistant as an alternative to metal components? We can accommodate dimensional accuracy of ±0.3μm!

We would like to introduce "ceramic products," which have been gaining attention in recent years as alternatives to metals. Do you have concerns about issues such as specified surface roughness, clearance precision, cylindricity precision, or dimensional accuracy? With many years of experience in handling ceramics and a wealth of achievements as a bearing manufacturer, we can confidently deliver high-precision ceramic components. 【Features】 ■ Extensive experience in handling ceramics ■ Rich track record as a bearing manufacturer ■ Capable of dimensional accuracy up to ±0.3μm ■ Lighter and more wear-resistant than metals ■ Specifications tailored for a wide range of applications *For more details, please refer to the PDF document or feel free to contact us.

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<High Precision and Ultra Small> Ceramic Parts *Integrated production from raw material formulation to processing

With years of expertise and a consistent production system, we provide high-strength and durable components made from alumina and ceramics. These can be utilized in a variety of applications, including precision instruments.

Our company has extensive experience in the manufacturing of ceramic components, conducting integrated production from raw material formulation and granulation to molding, firing, and processing. Our ceramic components possess the flexibility to accommodate a variety of applications and contribute to solving your challenges, such as "pursuing dimensional accuracy" and "aiming for high functionality." We can provide extremely small parts, insulating components for field-through applications, magnets and bearing stones for watches, as well as bearings for fans and motors. 【Product Lineup (Partial)】 ■ Micro Parts ■ Insulating Components for Field-Through Applications ■ Ceramic Magnets and Hole Stones ■ Ceramic Sliding Bearings ■ Precious Stones (Alumina Bearings) ■ Thin Film Circuit Boards (Submounts) *For more details, please refer to the PDF materials. Feel free to contact us with any inquiries.

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High-precision ceramic parts for semiconductor manufacturing

Ideal for precision machining. High-strength, durable ceramic components that support semiconductor manufacturing.

In the semiconductor manufacturing industry, the demand for microfabrication technology is increasing due to the miniaturization and high performance of products. In particular, high-precision components are a crucial factor that influences the quality and reliability of products. As dimensional accuracy and surface precision are required, ceramic components are gaining attention due to their characteristics. Our ceramic components are produced through a consistent process from raw material formulation to processing, contributing to solving our customers' challenges. 【Usage Scenarios】 - Semiconductor manufacturing equipment - Microfabrication jigs - Precision measuring instruments 【Benefits of Implementation】 - Achieving high-precision processing - Improving product quality - Extending the lifespan of equipment

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High-precision ceramic components for medical devices

High-strength, durable ceramic components that enhance the performance of precision sensors.

In the medical device industry, the reliability of precision sensors is crucial for patient safety and accurate diagnosis. Particularly in sensors that measure biological signals or capture minute changes, the dimensional accuracy and durability of components significantly affect the accuracy of measurement results. Ceramic components possess high insulation, wear resistance, and heat resistance, contributing to the performance enhancement of precision sensors. 【Application Scenarios】 - Biological information monitoring - Medical imaging diagnostic equipment - Analytical instruments 【Benefits of Implementation】 - Prolonged sensor lifespan - Improved measurement accuracy - Realization of miniaturization and lightweight design

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Ceramic parts for aerospace applications

High-strength, durable ceramic components that perform under harsh conditions.

In the aerospace industry, components used in harsh environments such as high temperature, high pressure, and high load require high heat resistance and reliability. Particularly for engine parts and airframe structural components, durability that can withstand temperature changes and vibrations is essential for safe flight and long-term operation. Inappropriate materials or manufacturing processes can lead to component failure or performance degradation, potentially causing serious accidents. Our ceramic components achieve high strength and durability using alumina and ceramics, contributing to solving challenges in the aerospace field. 【Application Scenarios】 - Jet engine parts - Rocket engine parts - Space probe components - Thermal shields 【Benefits of Implementation】 - Extended component lifespan due to high heat resistance - Improved fuel efficiency through weight reduction - Enhanced safety due to high strength - Improved performance through precise dimensional accuracy

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High-precision ceramic parts for automotive engine components

Providing high-strength and durable engine parts made from alumina and ceramics.

In the field of automotive engine components, parts that can withstand high temperatures, high pressures, and intense vibrations are required. In particular, components with excellent dimensional accuracy and wear resistance are crucial for improving combustion efficiency and ensuring durability. Ceramic parts can meet these demands. 【Application Scenarios】 - Sliding components inside the engine - Sensor components - Fuel injection system components 【Benefits of Implementation】 - Improved engine performance - Extended lifespan of components - Enhanced fuel efficiency

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High-precision ceramic components for electronic devices

High-strength, durable ceramic components that contribute to the performance improvement of small substrates.

In the electronics industry, there is a simultaneous demand for miniaturization and high performance, making the reliability of substrate components crucial. Particularly, as high-density mounting progresses, the dimensional accuracy and durability of components significantly affect product quality. Our ceramic components contribute to addressing these challenges through high-precision manufacturing technology and a consistent production system. 【Application Scenarios】 - Miniature electronic devices - High-density mounting substrates - Precision instruments 【Benefits of Implementation】 - Contributes to miniaturization and high performance of products - Achieves high reliability and durability - Supports a variety of applications

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High-precision ceramic parts for optical fibers

High-strength, durable ceramic components that support the reliability of optical fiber communication.

In the optical fiber communication industry, stability of signals and longevity are required. Particularly for optical fibers used in harsh environments, the durability of components is crucial. Ceramic components are essential for maximizing the performance of optical fibers due to their high strength, heat resistance, and insulation properties. Our high-precision ceramic components contribute to improving the reliability of optical fiber communication. [Application Scenarios] - Optical fiber connectors - Optical transceivers - Optical communication modules [Effects of Implementation] - Improved signal stability - Increased longevity - Ensured high reliability

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High-precision ceramic parts for fuel cells

High-strength and durable ceramic components that contribute to the performance improvement of fuel cells.

In the energy industry, particularly in the fuel cell sector, there is a demand for durable and reliable components. Fuel cells are often used in high-temperature, high-pressure, or corrosive environments, and the deterioration of components can lead to performance degradation and reduced lifespan. Our ceramic components, primarily made from alumina, achieve high strength and durability through years of manufacturing technology and a consistent production system. This contributes to the longevity and stable performance of fuel cells. 【Application Scenarios】 - Fuel cell stacks - Hydrogen stations - Stationary fuel cells 【Benefits of Implementation】 - Improved durability of fuel cells - Enhanced reliability of systems - Long-term cost reduction

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High-precision ceramic components for measuring instruments

Providing high-strength, durable precision parts made from alumina and ceramics.

In the measurement equipment industry, the fine shape and durability of nozzles are crucial for achieving high-precision measurements. Particularly in nozzles used for liquid flow control and trace component analysis, wear resistance and dimensional accuracy significantly influence product performance. Wear and distortion of the nozzle can lead to measurement errors and failures, potentially compromising the reliability of the product. Our ceramic components enable the manufacturing of high-precision nozzles through years of expertise and a consistent production system. 【Application Scenarios】 - Flow meters - Analytical instruments - Inkjet printers 【Benefits of Implementation】 - High-precision flow control - Increased longevity due to high wear resistance - Achievement of stable measurement results

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High-precision ceramic parts for robots

For robot joints. Providing high-strength, durable ceramic parts.

In the robotics industry, product durability and precise operation are essential. In particular, joint parts must withstand wear and shock from repeated movements, requiring high precision. Inappropriate components can lead to decreased performance or failure of the robot. Our ceramic parts achieve high strength and durability through years of technology and a consistent production system, contributing to the improvement of robot performance. 【Application Scenarios】 - Joints of robotic arms - Precision positioning mechanisms - Various sensors 【Benefits of Implementation】 - Increased longevity due to high durability - Realization of precise movements - Reduction in maintenance costs

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High-precision ceramic parts for watches

Providing high-strength, durable ceramic components for precision gears in watches.

In the watch industry, the miniaturization and high precision of products are progressing, and the quality of precision gears influences the performance of the products. In particular, durability and wear resistance are important, requiring accurate operation over long periods. Ceramic components are necessary to address these challenges and enhance the reliability of watches. 【Application Scenes】 - Gears for precision watches - Movement components - High-precision measuring instruments 【Effects of Implementation】 - Increased lifespan due to high strength and durability - Accurate operation due to high dimensional precision - Stable performance maintenance due to wear resistance

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High-precision ceramic parts for optical lenses

Providing high-strength and durable lens components made of alumina and ceramics.

In the optical lens industry, precise components are required to maximize the performance of lenses. Particularly in environments susceptible to temperature changes and vibrations, the dimensional accuracy and durability of components are crucial. Inadequate components can lead to degradation or failure of lens performance. Our ceramic components, backed by years of technology and a consistent production system, provide high-precision and durable parts, contributing to solving your challenges. 【Application Scenarios】 - Optical lenses - Precision instruments 【Benefits of Implementation】 - Improved dimensional accuracy - Realization of high functionality

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High-precision ceramic components for analytical instruments

High-strength and durable components made from alumina and ceramics, contributing to the performance enhancement of analytical instruments.

In the analytical machinery industry, the dimensional accuracy and chemical resistance of sample containers are crucial for precise analysis of samples. Particularly when handling trace amounts of samples, the material and shape of the container can significantly impact the analysis results. Inappropriate containers may lead to decreased analytical accuracy or equipment failure. Our ceramic components offer high dimensional accuracy and chemical resistance, contributing to the reliability of analysis results. 【Application Scenarios】 - Sample containers - Reagent containers - Analytical cells 【Benefits of Implementation】 - Achievement of high-precision analysis results - Long-term use due to chemical resistance - Accurate handling of trace samples

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