Hydro-Dynamic Pressure Bearings offer quiet operation.
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Press Release Summary:
Suited for light application use, S99HDPM Series is formed by stacking petal-shaped, laminated Aluminum-Silicon alloy plates housed in Stainless Steel case with polyurea-thickened grease containing antioxidant and anticorrosion additives. When shaft rotates, fluid between shaft guide and shaft generates pressure because of squeeze effect. Series include 7 bearings with IDs from 1-6 mm and max speed range from 6000-20,000 rpm.
Original Press Release:
New Series of Hydro-Dynamic Pressure Bearings From Sterling Instrument Feature Unique Construction
New Hyde Park, New York - A new series of hydro-dynamic pressure bearings from Sterling Instrument (an ISO 9001 manufacturer) feature a 30% weight saving along with lower cost when compared with conventional ball bearings. They fulfill 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, micromotors, etc. The bearings, identified as the S99HDPM Series, are formed by stacking "petal shaped" laminated Aluminum-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 7 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.
Detailed specifications are contained in SI Catalog 785 available free upon request from Sterling Instrument. This catalogs can be viewed on the Web at: www.sdp-si.com, or via mail request at: 2101 Jericho Turnpike, Box 5416, New Hyde Park, NY 11042-5416. Phone: 516-328-3300 o Fax: 516-326-8827 Web: www.sdp-si.com
