Hydrodynamic - Bearings - Technical

Bearings - Hydrodynamic Pressure

Hydro-dynamic pressure bearings feature a 30% weight saving along with lower cost when compared with conventional ball bearings. They fulfil the need for a long-lasting bearing capable of high speed, quiet operation and suitable for light application use, such as compact fan motors, paper feeders in copying machines and printers, laptop computers, micro motors, etc.

The bearings are formed by stacking "petal shaped" laminated Aluminium-Silicon alloy plates that are housed in a Stainless Steel case with a polyurea-thickened grease containing antioxidant and anticorrosion additives. The inner faces of these laminated plates act as the bore of the assembled bearing.

When the shaft rotates in this state, a fluid between the shaft guide and the shaft generates pressure as a result of the "squeeze effect" - a phenomenon of generating pressure to a lubricating membrane in a fluid lubrication when wall faces are close to each other.

The seven bearings in the series have I.D.’s ranging from 1 to 6 mm and an impressive maximum speed range of from 6000 to 20000 rpm

You can find Hydrodynamic Pressure Bearings in the Small Parts and Bearings Online Catalogue pages.


For a huge range of bearings online please visit the Bearing Shop Online Website.

Hobby and Engineering Supplies lists a smaller range of products and only the most popular items in each range. They also list many additional hobby specific categories.

For the best range of miniature and small bearings please try the Miniature Bearings Australia website. Miniature Bearings Australia also list a large variety of miniature engineering products.



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Small Parts and Bearings offers 124406 products in 3083 categories including ball bearings, roller bearings, thrust bearings, ceramic and ceramic hybrid bearings, stainless steel bearings, miniature bearings, linear bearings, shafting, oil seals and adhesives - see the full listing in the Online Catalogue. We have excellent Freight Rates within Australia and worldwide. We offer a choice of delivery with a signature required, or cheaper options with no signature required. The no signature required options are at the customer’s risk once the goods leave our store.

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