SDP/SI Bearings

New Series Of Hydro-Dynamic Pressure Bearings From Sterling Instrument Feature Unique Construction

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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

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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.

Additional technical details are contained in Catalog D785, available free upon request from Stock Drive Products, 2101 Jericho Turnpike, Box 5416, P. O. New Hyde Park, NY 11042-5416. Phone: 516-328-3300 • Fax: 516-326-8827. Web: http://www.sdp-si.com

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Stock Drive Products / Sterling Instrument
E-Mail: SDP-SIsupport@sdp-si.com
Phone: 516-328-3300
Fax: 800-737-7436 or 516-326-8827