{"id":559358,"date":"2024-11-05T18:23:43","date_gmt":"2024-11-05T18:23:43","guid":{"rendered":"https:\/\/pdfstandards.shop\/product\/uncategorized\/esdu-960152010\/"},"modified":"2024-11-05T18:23:43","modified_gmt":"2024-11-05T18:23:43","slug":"esdu-960152010","status":"publish","type":"product","link":"https:\/\/pdfstandards.shop\/product\/publishers\/esdu\/esdu-960152010\/","title":{"rendered":"ESDU 96015:2010"},"content":{"rendered":"<p><strong>INTRODUCTION<\/strong><\/p>\n<p>ESDUpac A9615 provides a computer program for the selection of<br \/>\nbearing materials suitable for dry rubbing conditions. The program<br \/>\ncan also be used to analyse the performance of a dry rubbing<br \/>\nbearing of known material. Use of the program for both selection<br \/>\nand analysis is described in this Data Item.<\/p>\n<p>The dry rubbing bearings dealt with by the program comprise a<br \/>\n&#034;self lubricating&#034; material rubbing against a metallic or ceramic<br \/>\ncounterface. Wear of the bearing material is inevitable and the<br \/>\nfriction will usually be higher than with alternative types of<br \/>\nbearings. Dry rubbing bearings are, however, often the first choice<br \/>\nfor applications where the operating conditions do not allow a<br \/>\nliquid lubricant film to be maintained (<i>e.g.<\/i> high loads<br \/>\nand low speeds). Typical operating regimes for various bearing<br \/>\ntypes are shown in Sketch 2a of ESDU 87007. Dry rubbing bearings<br \/>\nare also used when the ambient conditions are unsuitable for a<br \/>\nconventional lubricant (<i>e.g.<\/i> high temperatures, vacuum,<br \/>\nradiation or presence of solvents) or when contamination of the<br \/>\nsurroundings by the lubricant must be avoided (<i>e.g.<\/i> food<br \/>\nhandling). Sometimes, even when a liquid lubricant is present, a<br \/>\nbearing material suitable for dry rubbing is used as a safeguard in<br \/>\ncase the fluid film breaks down or the lubricant supply fails.<\/p>\n<p>The ESDUpac program described in this Data Item implements the<br \/>\nanalysis and selection methods of the previously issued Item, ESDU<br \/>\n87007, entitled &#034;Design and material selection for dry rubbing<br \/>\nbearings&#034;. In order to use the program effectively, that Data Item<br \/>\nshould be referred to for the theoretical limitations of the<br \/>\nmethods and for discussion of practical considerations. The methods<br \/>\napply for both journal and thrust bearings with either continuous<br \/>\nrotation or oscillatory motion. Other dry rubbing bearings, such as<br \/>\nmight be used for reciprocating motion, can also be analysed.<br \/>\nCorrections for intermittent operation, in which the bearing is<br \/>\nperiodically stationary, can be applied. The computer program<br \/>\nallows flexibility in the specification of bearing geometry as<br \/>\nexplained later in this Data Item.<\/p>\n<p>Dry rubbing bearing materials are often based on a polymer<br \/>\nmatrix incorporating various fillers intended to modify both the<br \/>\nmechanical and tribological properties. Bearing materials based on<br \/>\nbulk carbon\/graphites and on metals with solid lubricant additions<br \/>\nare also available. ESDUpac A9615 includes a database that covers<br \/>\nall these basic types of materials. The database incorporates the<br \/>\nresults of tests on polymer based bearing materials carried out at<br \/>\nthe National Centre of Tribology&#039;s own laboratories. These results<br \/>\nconsist of a set of friction and wear data based on more than six<br \/>\nyears&#039; work representing over 150u000 test hours (Derivation 3).<br \/>\nInevitably, some of the materials tested by NCT will no longer be<br \/>\navailable and also new materials will have subsequently become<br \/>\navailable. However, the program can be run with alternative<br \/>\ndatabases the preparation of which is explained in this Data<br \/>\nItem.<\/p>\n","protected":false},"excerpt":{"rendered":"<p><b>Design and Material Selection for Dry Rubbing Bearings (Use of Computer Program A9615)<\/b><\/p>\n<table style=\"width: 100%\" border=\"0\" cellspacing=\"0\" cellpadding=\"0\">\n<tbody>\n<tr>\n<td>Published By<\/td>\n<td>Publication Date<\/td>\n<td>Number of Pages<\/td>\n<\/tr>\n<tr>\n<td><a href=\"https:\/\/pdfstandards.shop\/product-category\/publishers\/esdu\/\"><b>ESDU<\/b><\/a><\/td>\n<td>2010-05<\/td>\n<td>NA<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n","protected":false},"featured_media":0,"template":"","meta":{"rank_math_lock_modified_date":false,"ep_exclude_from_search":false},"product_cat":[2675],"product_tag":[],"class_list":{"0":"post-559358","1":"product","2":"type-product","3":"status-publish","5":"product_cat-esdu","7":"first","8":"instock","9":"sold-individually","10":"shipping-taxable","11":"purchasable","12":"product-type-simple"},"_links":{"self":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product\/559358","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product"}],"about":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/types\/product"}],"wp:attachment":[{"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/media?parent=559358"}],"wp:term":[{"taxonomy":"product_cat","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_cat?post=559358"},{"taxonomy":"product_tag","embeddable":true,"href":"https:\/\/pdfstandards.shop\/wp-json\/wp\/v2\/product_tag?post=559358"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}