{"product_id":"effect-of-silicon-nitride-balls-nasa-technical-reports-server-ntrs-9781289146399","title":"Effect of Silicon Nitride Balls and Rollers on Rolling Bearing Life","description":"Three decades have passed since the introduction of silicon nitride rollers and balls into conventional rolling-element bearings. For a given applied load, the contact (Hertz) stress in a hybrid bearing will be higher than an all-steel rolling-element bearing. The silicon nitride rolling-element life as well as the lives of the steel races were used to determine the resultant bearing life of both hybrid and all-steel bearings. Life factors were determined and reported for hybrid bearings. Under nominal operating speeds, the resultant calculated lives of the deep-groove, angular-contact, and cylindrical roller hybrid bearings with races made of post-1960 bearing steel increased by factors of 3.7, 3.2, and 5.5, respectively, from those calculated using the Lundberg-Palmgren equations. An all-steel bearing under the same load will have a longer life than the equivalent hybrid bearing under the same conditions. Under these conditions, hybrid bearings are predicted to have a lower fatigue life than all-steel bearings by 58 percent for deep-groove bearings, 41 percent for angular-contact bearings, and 28 percent for cylindrical roller bearings.\u003cbr\u003e\u003cbr\u003e\u003cb\u003eAuthor:\u003c\/b\u003e Nasa Technical Reports Server (Ntrs),Erwin V. Zaretsky\u003cbr\u003e\u003cb\u003eISBN-10:\u003c\/b\u003e 128914639X\u003cbr\u003e\u003cb\u003eISBN-13:\u003c\/b\u003e 9781289146399\u003cbr\u003e\u003cb\u003ePublisher:\u003c\/b\u003e Bibliogov\u003cbr\u003e\u003cb\u003eLanguage:\u003c\/b\u003e English\u003cbr\u003e\u003cb\u003ePublished:\u003c\/b\u003e 06\/28\/2013\u003cbr\u003e\u003cb\u003ePages:\u003c\/b\u003e 34\u003cbr\u003e\u003cb\u003eFormat:\u003c\/b\u003e Paperback\u003cbr\u003e\u003cb\u003eWeight:\u003c\/b\u003e 0.18lbs\u003cbr\u003e\u003cb\u003eSize:\u003c\/b\u003e 9.69h x 7.44w x 0.07d","brand":"Nasa Technical Reports Server (Ntrs)","offers":[{"title":"Paperback","offer_id":47611423490303,"sku":"9781289146399","price":15.75,"currency_code":"USD","in_stock":true}],"thumbnail_url":"\/\/cdn.shopify.com\/s\/files\/1\/0662\/2982\/9887\/files\/img_087c15e5-da54-451e-874e-8077b59b8c23.jpg?v=1764513784","url":"https:\/\/www.whiterainbookhouse.com\/products\/effect-of-silicon-nitride-balls-nasa-technical-reports-server-ntrs-9781289146399","provider":"WR Book House","version":"1.0","type":"link"}