{"id":4953,"date":"2025-06-12T10:54:17","date_gmt":"2025-06-12T05:24:17","guid":{"rendered":"https:\/\/study.madeeasy.in\/?p=4953"},"modified":"2025-07-26T15:32:32","modified_gmt":"2025-07-26T10:02:32","slug":"comparison-of-rolling-and-sliding-contact-bearing","status":"publish","type":"post","link":"https:\/\/www.madeeasy.in\/study\/me\/machine-design\/comparison-of-rolling-and-sliding-contact-bearing","title":{"rendered":"Comparison of Rolling and Sliding Contact Bearing"},"content":{"rendered":"<h2 style=\"text-align: justify;\"><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-4954 aligncenter\" src=\"https:\/\/study.madeeasy.in\/wp-content\/uploads\/2025\/06\/Rolling-and-Sliding-Contact-Bearing.jpg\" alt=\" Rolling and Sliding Contact Bearing\" width=\"298\" height=\"140\" \/><\/h2>\n<h2 style=\"text-align: justify;\">Hydrodynamic Bearing<\/h2>\n<ul style=\"text-align: justify;\">\n<li>Higher starting friction (torque)<\/li>\n<li>Load carrying capacity vary directly with speed.<\/li>\n<li>It is suitable for shock, fatigue.<\/li>\n<li>It is used for high load, high speed application.<\/li>\n<\/ul>\n<div id=\"ez-toc-container\" class=\"ez-toc-v2_0_79_1 ez-toc-wrap-left counter-hierarchy ez-toc-counter ez-toc-light-blue ez-toc-container-direction\">\n<div class=\"ez-toc-title-container\">\n<p class=\"ez-toc-title\" style=\"cursor:inherit\">Table of Contents<\/p>\n<span class=\"ez-toc-title-toggle\"><a href=\"#\" class=\"ez-toc-pull-right ez-toc-btn ez-toc-btn-xs ez-toc-btn-default ez-toc-toggle\" aria-label=\"Toggle Table of Content\"><span class=\"ez-toc-js-icon-con\"><span class=\"\"><span class=\"eztoc-hide\" style=\"display:none;\">Toggle<\/span><span class=\"ez-toc-icon-toggle-span\"><svg style=\"fill: #999;color:#999\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" class=\"list-377408\" width=\"20px\" height=\"20px\" viewBox=\"0 0 24 24\" fill=\"none\"><path d=\"M6 6H4v2h2V6zm14 0H8v2h12V6zM4 11h2v2H4v-2zm16 0H8v2h12v-2zM4 16h2v2H4v-2zm16 0H8v2h12v-2z\" fill=\"currentColor\"><\/path><\/svg><svg style=\"fill: #999;color:#999\" class=\"arrow-unsorted-368013\" xmlns=\"http:\/\/www.w3.org\/2000\/svg\" width=\"10px\" height=\"10px\" viewBox=\"0 0 24 24\" version=\"1.2\" baseProfile=\"tiny\"><path d=\"M18.2 9.3l-6.2-6.3-6.2 6.3c-.2.2-.3.4-.3.7s.1.5.3.7c.2.2.4.3.7.3h11c.3 0 .5-.1.7-.3.2-.2.3-.5.3-.7s-.1-.5-.3-.7zM5.8 14.7l6.2 6.3 6.2-6.3c.2-.2.3-.5.3-.7s-.1-.5-.3-.7c-.2-.2-.4-.3-.7-.3h-11c-.3 0-.5.1-.7.3-.2.2-.3.5-.3.7s.1.5.3.7z\"\/><\/svg><\/span><\/span><\/span><\/a><\/span><\/div>\n<nav><ul class='ez-toc-list ez-toc-list-level-1 ' ><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-1\" href=\"https:\/\/www.madeeasy.in\/study\/me\/machine-design\/comparison-of-rolling-and-sliding-contact-bearing\/#1-Hydro-static-Bearing\" >1. Hydro-static Bearing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-2\" href=\"https:\/\/www.madeeasy.in\/study\/me\/machine-design\/comparison-of-rolling-and-sliding-contact-bearing\/#2-Rolling-Contact-Bearing\" >2. Rolling Contact Bearing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-3\" href=\"https:\/\/www.madeeasy.in\/study\/me\/machine-design\/comparison-of-rolling-and-sliding-contact-bearing\/#3-Heat-Generated-in-a-Bearing\" >3. Heat Generated in a Bearing<\/a><\/li><li class='ez-toc-page-1 ez-toc-heading-level-3'><a class=\"ez-toc-link ez-toc-heading-4\" href=\"https:\/\/www.madeeasy.in\/study\/me\/machine-design\/comparison-of-rolling-and-sliding-contact-bearing\/#4-Heat-Dissipation-Equation\" >4. Heat Dissipation Equation<\/a><\/li><\/ul><\/nav><\/div>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"1-Hydro-static-Bearing\"><\/span>1. Hydro-static Bearing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li>Load carrying capacity is independent of speed.<\/li>\n<\/ul>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"2-Rolling-Contact-Bearing\"><\/span>2. Rolling Contact Bearing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<ul style=\"text-align: justify;\">\n<li>Poor damping <a href=\"https:\/\/study.madeeasy.in\/ce\/soil-mechanics-foundation-engineering\/bearing-capacity\/\" target=\"_blank\" rel=\"noopener\">capacity<\/a>.<\/li>\n<li>Requires low starting torque.<\/li>\n<li>Under full running capacity, friction loss is more as compared to hydrodynamic bearing.<\/li>\n<li>Suitable for frequent start\/stop applications<\/li>\n<li>It requires more radial space [but hydrodynamic bearing requires more axial space]<\/li>\n<li>It is preferred for precise location of journal axis.<\/li>\n<\/ul>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"3-Heat-Generated-in-a-Bearing\"><\/span>3. Heat Generated in a Bearing<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Power Loss Due to <a href=\"https:\/\/study.madeeasy.in\/me\/strength-of-materials\/laws-of-friction\/\" target=\"_blank\" rel=\"noopener\">Friction<\/a> is Heat Generated<\/p>\n<p style=\"text-align: justify;\">Ploss = \u03bcWV<\/p>\n<p style=\"text-align: justify;\">Here, W = Radial load, V = Rubbing velocity<\/p>\n<h3 style=\"text-align: justify;\"><span class=\"ez-toc-section\" id=\"4-Heat-Dissipation-Equation\"><\/span>4. Heat Dissipation Equation<span class=\"ez-toc-section-end\"><\/span><\/h3>\n<p style=\"text-align: justify;\">Hd = (\u0394t + \u00a018)2 x A \/ K watt<\/p>\n<p style=\"text-align: justify;\">\u0394t = Bearing temperature<br \/>\nA = l \u00d7 d<br \/>\nK = 0.484 For unventilated bearing<br \/>\n= 0.273 For well-ventilated bearing<\/p>\n<p style=\"text-align: center;\"><a class=\"btn btn-danger\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/me\/machine-design\/bearing-material-properties\/\" target=\"_blank\" rel=\"noopener\">&lt;&lt; Previous<\/a> | <a class=\"btn btn-success\" role=\"button\" href=\"https:\/\/study.madeeasy.in\/me\/machine-design\/types-of-joints\/\" target=\"_blank\" rel=\"noopener\"> Next &gt;&gt;<\/a><br \/>\n<strong> Must Read: <\/strong> <a href=\"https:\/\/study.madeeasy.in\/me\/machine-design\/strength-of-welded-joints\/\" target=\"_blank\" rel=\"noopener\"><strong>What is Machine Design?<\/strong><\/a><\/p>\n","protected":false},"excerpt":{"rendered":"<p>Hydrodynamic Bearing Higher starting friction (torque) Load carrying capacity vary directly with speed. It is suitable for shock, fatigue. It<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[1543,10],"tags":[1572,1577],"class_list":["post-4953","post","type-post","status-publish","format-standard","hentry","category-machine-design","category-me","tag-hydrodynamic-bearing","tag-rolling-contact-bearing"],"_links":{"self":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/4953","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/comments?post=4953"}],"version-history":[{"count":0,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/posts\/4953\/revisions"}],"wp:attachment":[{"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/media?parent=4953"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/categories?post=4953"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.madeeasy.in\/study\/wp-json\/wp\/v2\/tags?post=4953"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}