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Understanding damage tolerance in hybrid bearings

<p class="intro upper-first" style="font-size:1.2em;font-family:Georgia, serif;white-space:normal;word-spacing:0px;text-transform:none;font-weight:400;color:#111111;padding-bottom:1.5em;font-style:normal;padding-top:0px;padding-left:0px;orphans:2;widows:2;margin:0px;letter-spacing:0px;padding-right:0px;background-color:#ffffff;text-indent:0px;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> New research by <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/skf">SKF</a> could make hybrid <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/bearings">bearings</a> more cost-effective and reliable, paving the way for their use in a wider range of applications. <p style="font-size:20px;font-family:Georgia, serif;white-space:normal;word-spacing:0px;text-transform:none;font-weight:400;color:#111111;padding-bottom:1.5em;font-style:normal;padding-top:0px;padding-left:0px;orphans:2;widows:2;margin:0px;letter-spacing:0px;padding-right:0px;background-color:#ffffff;text-indent:0px;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> Hybrid <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/bearings">bearings</a>, which combine hardened <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/steel">steel</a> rings with rolling elements made of high-performance ceramic materials, are an increasingly popular option for demanding applications. <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/bearings">Bearings</a> of this type can outperform conventional designs where high speeds, high temperatures or poor lubrication conditions are experienced. <img alt="" src="http://www.bearing.com.cn/membcentre/editor/attached/image/20190118/20190118180107_63278.jpg" /> <p style="font-size:20px;font-family:Georgia, serif;white-space:normal;word-spacing:0px;text-transform:none;font-weight:400;color:#111111;padding-bottom:1.5em;font-style:normal;padding-top:0px;padding-left:0px;orphans:2;widows:2;margin:0px;letter-spacing:0px;padding-right:0px;background-color:#ffffff;text-indent:0px;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> Those characteristics have led to their use in jet <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/engines">engines</a> and other critical <a class="topiclink" style="text-decoration:none;border-bottom:#000000 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/aerospace-equipment">aerospace equipment</a>. Hybrid <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/bearings">bearings</a> also provide high levels of <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/electrical">electrical</a> resistance, making them useful in applications, such as <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/electric-motors">electric motors</a> and <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/generators">generators</a>, where stray currents can damage <a class="topiclink" style="text-decoration:none;border-bottom:#000000 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/steel-bearing-surfaces">steel bearing surfaces</a>. <p style="font-size:20px;font-family:Georgia, serif;white-space:normal;word-spacing:0px;text-transform:none;font-weight:400;color:#111111;padding-bottom:1.5em;font-style:normal;padding-top:0px;padding-left:0px;orphans:2;widows:2;margin:0px;letter-spacing:0px;padding-right:0px;background-color:#ffffff;text-indent:0px;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;"> Ceramic materials have many characteristics that make them ideal for <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/bearing">bearing</a> applications. Modern ceramics such as silicon nitride are hard, light and can be manufactured with an extremely smooth <a class="topiclink always-topic" style="text-decoration:none;border-bottom:#03b8de 1px dashed;color:#000000;" href="http://www.engineeringnews.co.za/topic/surface">surface</a> finish. Ceramic materials do have disadvantages, however. <p style="font-size:20px;font-family:Georgia, serif;white-space:normal;word-spacing:0px;text-transform:none;font-weight:400;color:#111111;padding-bottom:1.5em;font-style:normal;padding-top:0px;padding-left:0px;orphans:2;widows:2;margin:0px;letter-spacing:0px;padding-right:0px;background-color:#ffffff;text-indent:0px;font-variant-ligatures:normal;font-variant-caps:normal;-webkit-text-stroke-width:0px;text-decoration-style:initial;text-decoration-color:initial;">

18 Jan,2019

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