Bearing 'ADB' that reduces friction by up to 1/14.
A huge response worldwide! Non-contact between balls without a holder = fundamentally solving the challenges of friction, damage, and lubrication management.
<Structure and Challenges of Conventional Bearings> Bearings typically have a component called a "retainer." The retainer is designed to prevent the balls from coming into contact with each other and is an important part for maintaining the position of the balls. However, the balls and the retainer are always in contact. This contact generates friction, which is a significant factor that hinders the smooth rotation of the bearing. On the other hand, it is not simply a matter of eliminating the retainer. Without a retainer, the balls will come into contact with each other. This contact also generates friction, which, like the case with a retainer, becomes a factor that hinders smooth rotation. <Ideal State Without Retainers or Ball Contact> The ideal situation is one where there is no retainer and the balls do not come into contact with each other. If there is no contact between the balls and the retainer, as well as no contact between the balls themselves, friction can be minimized, allowing for smooth rotation. This ideal has been realized with our developed product, 'ADB.' ADB is a groundbreaking bearing that prevents contact between the balls without using a retainer. ▼For more details, visit (Handling Company: Coo Space Co., Ltd. Official Website) https://coo-space.com/
basic information
<Structure and Mechanism of ADB> The mechanism of ADB is very simple. There are small "indentations" where the outer ring's balls make contact. In a typical bearing, the balls roll directly beneath the shaft, but in ADB, the indentations on the outer ring cause the balls to roll slightly off to the side from directly underneath. As a result, even though the balls make a complete rotation, the distance they travel is shorter. This causes the balls to slightly decelerate when passing through the indentations and then accelerate again after passing through. Consequently, behind the accelerated balls, the following balls are still decelerating, creating small gaps between the balls. ADB utilizes this principle to naturally separate the balls without the need for a retainer.
Price information
- In the manufacturing sector, an unprecedented 1.68 million views and 1,380 comments recorded on YouTube (as of August 2026) - Kawasaki Entrepreneur Audition: Awarded the Entrepreneur Prize - Invention Award: Received the Invention Encouragement Prize - Nikkei Monozukuri: Featured in an 8-page special article - Tokyo 2020 Paralympics: Adopted for the wheelchair of the Japan national wheelchair rugby team (won a bronze medal) - Paris 2024 Paralympics: Adopted for the wheelchair of the Japan national wheelchair rugby team (won a gold medal) - Scheduled to be adopted for the Los Angeles 2028 Paralympics - Various patents obtained (Japan, USA, China)
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Model number/Brand name
Handling Company: Kuuspace Co., Ltd.
Applications/Examples of results
<Aerospace Field> ■Delivery Record: JAXA ADB has been adopted for equipment used in harsh environments, such as attitude control for artificial satellites requiring long life, thrust vector control for rockets requiring vibration resistance, and rotors for Mars drones requiring high-speed rotation. <Marine Research Field> ■Delivery Record: JAMSTEC Leveraging the feature of being able to use seawater directly as a lubricant, ADB has been adopted for equipment used in seawater environments. <Machine Tools, Robotics, and Canning Field> ■Delivery Record: OSG, DMG Mori Seiki Thanks to ADB's ability to rotate with low torque, it contributed to achieving high speeds of 30,000 rpm, approximately 2.5 times faster than conventional methods. It is also used for improving the efficiency of robotic movements and reducing takt time. <Energy Field> ■Delivery Record: Railway Technical Research Institute, Wind Power Generation Related Companies ADB has been adopted as a touchdown bearing used in the event of magnetic bearing failure. <Automotive and Engine Field> ■Delivery Record: Toyota Motor Corporation, among others A design report for ADB capable of high-speed rotation conditions of 180,000 rpm with a shaft diameter of 33 mm was delivered for turbochargers, which are particularly exposed to harsh environments among automotive parts.
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