{"id":4226,"date":"2026-04-23T08:01:36","date_gmt":"2026-04-23T08:01:36","guid":{"rendered":"https:\/\/jiayubearing.com\/?p=4226"},"modified":"2026-04-24T03:44:25","modified_gmt":"2026-04-24T03:44:25","slug":"the-sliding-of-the-roller-end-face-and-the-rib-in-the-roller-bearing","status":"publish","type":"post","link":"https:\/\/jiayubearing.com\/zh\/the-sliding-of-the-roller-end-face-and-the-rib-in-the-roller-bearing\/","title":{"rendered":"The sliding of the roller end face and the rib in the roller bearing"},"content":{"rendered":"
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Due to the concentrated contact between the roller end face and the rib, axial roller loads occur in roller bearings. Tapered roller bearings and self-aligning roller bearings (asymmetric rollers) rely on such contact to bear the component of the contact load between the raceway and the roller in the axial direction of the roller. Some cylindrical roller bearing designs require the roller end face to contact the rib in order to overcome the axial roller load caused by roller skew or to support externally applied axial roller loads. As these contact surfaces undergo sliding between the roller end face and the rib, they become the main factors contributing to the frictional heating of the entire bearing. In addition, there are several failure modes related to roller end face-rib contact in bearings, such as wear and scratching of the contact surface. When the contact area is under normal rotational speed and lubrication conditions, these failure modes are related to the ability of the roller end face-rib contact to support the axial roller load. The frictional characteristics and load-bearing capacity of the roller end face-rib contact are significantly dependent on the geometry of the contact bodies.<\/p>\n\n\n\n

In the design of roller bearings, several geometric shapes of roller ends and ribs have been successfully adopted. The geometric design of roller ends and ribs is usually governed by manufacturing conditions and performance requirements. Most designs utilize oblique ribs and flat-ended rollers (with rounded chamfers) or spherical-ended rollers. The surface of the oblique rib can be described as a part of a cone, forming an angle \u03b8f with the radial plane perpendicular to the axis of the ring. This angle is commonly referred to as the rib angle or rib tilt angle, which can be 0, indicating that the rib surface lies within the radial plane. Figure 1 presents two examples of roller end-rib geometries for cylindrical roller bearings. In Figure 1a, the flat-ended roller contacts the rib at one point (near the tangent of the roller end plane to the roller’s arc corner) in the absence of skew. When the roller is skewed, the contact point moves along this tangent on the roller end face towards the top of the rib, as shown in Figure 2b. If designed properly, the spherical-ended roller will contact the rib on its spherical end face. In the absence of skew, the contact point is located in the middle of the roller end face, as shown in Figure 2c. As the skew angle increases, the contact point deviates from the middle and moves towards the top of the rib, as shown in Figure 2d (for an inner ring rib). For specialized designs, the change in contact position of spherical-ended rollers is less sensitive to skew than that of flat-ended rollers.<\/p>\n<\/div><\/div>\n\n\n\n

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Due to the concentrated contact between the roller end face and the rib, axial roller loads occur in roller bearings. […]<\/p>","protected":false},"author":2,"featured_media":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"var(--ast-global-color-4)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"categories":[1],"tags":[],"class_list":["post-4226","post","type-post","status-publish","format-standard","hentry","category-news-center"],"acf":[],"_links":{"self":[{"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/posts\/4226","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/users\/2"}],"replies":[{"embeddable":true,"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/comments?post=4226"}],"version-history":[{"count":4,"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/posts\/4226\/revisions"}],"predecessor-version":[{"id":4239,"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/posts\/4226\/revisions\/4239"}],"wp:attachment":[{"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/media?parent=4226"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/categories?post=4226"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/jiayubearing.com\/zh\/wp-json\/wp\/v2\/tags?post=4226"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}