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Miyatake Lab
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A lab studying bearings that support shafts with air or water, and non-contact levitation.
AboutAbout the lab
Supporting shafts with fluids for low friction and high precision.
The Miyatake Lab studies fluid-lubricated bearings, which support shafts with fluids such as air and water, and non-contact levitation devices that use vibration.
Alongside clarifying the characteristics of bearings, the lab applies them to high-precision positioning mechanisms and machine tools.
In recent years, it has also worked on self-lubricating plain bearings based on urushi lacquer, a natural resin, as the base resin.
On the lab's website, the lab is introduced under the name "Yoshimoto-Miyatake Lab."
Key terms
- Fluid-lubricated bearing
- A bearing that supports a shaft or guide surface with a fluid such as air, oil, or water. It offers low friction and high motion accuracy.
- Squeeze film effect
- A phenomenon in which vibrating a surface that faces an object produces a fluid pressure between the object and the vibrating surface that is higher than the surrounding pressure.
- Self-lubricating plain bearing
- A bearing made by mixing a solid lubricant into a base resin, used to support rotating parts of machines without oil lubrication.
ResearchResearch themes
The lab studies fluid-lubricated bearings and non-contact levitation devices that use the squeeze film effect. For bearings, it aims to clarify their characteristics through both experiments and numerical calculation in order to obtain design methods, and it also works on applications to positioning mechanisms and machine tools.
*Illustrative imageAir-Lubricated Bearings
Using air as the lubricating fluid makes spindles with low friction that are suited to high-speed rotation. For both aerodynamic and aerostatic types, the lab aims to clarify bearing characteristics through experiments and numerical calculation and to obtain design methods.
*Illustrative imageUltra-Compact, High-Speed Machine Tools
The lab proposed using a commercially available end mill with a 4 mm shank diameter as the main shaft of an aerostatic spindle, and built a prototype ultra-compact, high-speed milling machine that runs at over 400,000 rpm. It machines various materials and measures cutting forces and machined surface properties.
*Illustrative imageWater-Lubricated Hydrostatic Bearings
Using water instead of oil as the working fluid is expected to make spindles and guideways that are clean and consume little power. Because water and oil differ in viscosity, new design methods are needed, and the lab aims to establish them by clarifying characteristics through experiments and numerical calculation.
*Illustrative imageLevitating Objects with Vibration
Among squeeze film effect applications, the lab studies non-contact levitation using vibration in the ultrasonic range. Its work includes non-contact levitation of small IC chips and wafers, and levitation in high-vacuum environments.
MembersFaculty
The members of the Miyatake Lab consist of faculty members and doctoral, master's, and undergraduate students.As of 2026
- ProfessorMasaaki Miyatake
VoicesStudent voices
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Report an errorAbout the images
The top and research theme images are illustrative and were not taken at the lab. They are cropped from Wikimedia Commons images. Cropped CC BY-SA images are provided under the same CC BY-SA license as the original (version shown on each line).
- Top image: “NASA Langley Magnetic Suspension-Balance System - GPN” NASA / Public domain (cropped)
- Air-Lubricated Bearings: “AIR BEARING PARTS - NARA - 17473515” 作者不詳 / Public domain (cropped)
- Ultra-Compact, High-Speed Machine Tools: “Jingdiao Spindle” HafeezJD / CC BY-SA 4.0 (cropped)
- Water-Lubricated Hydrostatic Bearings: “Jingdiao spindle” HafeezJD / CC BY-SA 4.0 (cropped)
- Levitating Objects with Vibration: “October 19, 2012- Acoustic Levitation for Medicine ( )” ENERGY.GOV / Public domain (cropped)
- Related lab (佐々
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