{"id":4762,"date":"2024-04-26T12:44:26","date_gmt":"2024-04-26T10:44:26","guid":{"rendered":"https:\/\/product-myonic.com\/?page_id=4762"},"modified":"2024-09-19T11:08:50","modified_gmt":"2024-09-19T09:08:50","slug":"service-life-calculation","status":"publish","type":"page","link":"https:\/\/product-myonic.com\/en\/service-life-calculation\/","title":{"rendered":"Service life calculations"},"content":{"rendered":"<p><div class=\"fusion-fullwidth fullwidth-box fusion-builder-row-1 fusion-flex-container nonhundred-percent-fullwidth non-hundred-percent-height-scrolling\" style=\"--awb-border-radius-top-left:0px;--awb-border-radius-top-right:0px;--awb-border-radius-bottom-right:0px;--awb-border-radius-bottom-left:0px;--awb-margin-top:0px;--awb-flex-wrap:wrap;\" ><div class=\"fusion-builder-row fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"max-width:1664px;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column 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left;\">Calculation of the theoretical service life of ball bearings<\/h1>\n<\/div><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-2 fusion-flex-column\" style=\"--awb-bg-size:cover;--awb-width-large:20%;--awb-margin-top-large:0px;--awb-spacing-right-large:9.6%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:9.6%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-search-element fusion-search-element-1 fusion-no-small-visibility fusion-no-medium-visibility fusion-search-form-clean\" style=\"--awb-margin-top:15px;--awb-margin-bottom:0px;\">\t\t<form role=\"search\" class=\"searchform fusion-search-form  fusion-live-search 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fusion-content-layout-column\"><nav class=\"awb-menu awb-menu_column awb-menu_em-hover mobile-mode-always-expanded awb-menu_icons-left awb-menu_dc-yes mobile-trigger-fullwidth-off awb-menu_mobile-toggle awb-menu_indent-left loading mega-menu-loading awb-menu_desktop awb-menu_dropdown awb-menu_expand-right awb-menu_transition-fade\" 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awb-menu__main-ul_column\"><li  id=\"menu-item-4887\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4887 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4887\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/miniaturkugellager-technische-grundlagen\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-home fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Standard bearings General technology<\/span><\/a><\/li><\/ul><\/nav><div class=\"fusion-separator fusion-full-width-sep\" style=\"align-self: center;margin-left: auto;margin-right: auto;margin-top:6px;margin-bottom:10px;width:100%;\"><div class=\"fusion-separator-border sep-single sep-solid\" style=\"--awb-height:20px;--awb-amount:20px;border-color:#e2e2e2;border-top-width:1px;\"><\/div><\/div><nav class=\"awb-menu awb-menu_column awb-menu_em-hover mobile-mode-collapse-to-button awb-menu_icons-left awb-menu_dc-yes mobile-trigger-fullwidth-off awb-menu_mobile-toggle awb-menu_indent-left mobile-size-full-absolute loading mega-menu-loading awb-menu_desktop awb-menu_dropdown awb-menu_expand-right awb-menu_transition-fade fusion-no-small-visibility fusion-no-medium-visibility\" style=\"--awb-gap:5px;--awb-color:#1d2130;--awb-active-color:#80adce;--awb-submenu-space:-;--awb-icons-hover-color:#80adce;--awb-arrows-size-height:5px;--awb-arrows-size-width:5px;--awb-main-justify-content:flex-start;--awb-mobile-justify:flex-start;--awb-mobile-caret-left:auto;--awb-mobile-caret-right:0;--awb-box-shadow:3px 3px 5px 0px rgba(178,178,178,0.86);;--awb-fusion-font-family-typography:inherit;--awb-fusion-font-style-typography:normal;--awb-fusion-font-weight-typography:400;--awb-fusion-font-family-submenu-typography:inherit;--awb-fusion-font-style-submenu-typography:normal;--awb-fusion-font-weight-submenu-typography:400;--awb-fusion-font-family-mobile-typography:inherit;--awb-fusion-font-style-mobile-typography:normal;--awb-fusion-font-weight-mobile-typography:400;\" aria-label=\"Standardlager\" data-breakpoint=\"1024\" data-count=\"1\" data-transition-type=\"fade\" data-transition-time=\"300\" data-expand=\"right\"><button type=\"button\" class=\"awb-menu__m-toggle awb-menu__m-toggle_no-text\" aria-expanded=\"false\" aria-controls=\"menu-standardlager\"><span class=\"awb-menu__m-toggle-inner\"><span class=\"collapsed-nav-text\"><span class=\"screen-reader-text\">Toggle Navigation<\/span><\/span><span class=\"awb-menu__m-collapse-icon awb-menu__m-collapse-icon_no-text\"><span 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aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">General \/ Technical basics<\/span><\/a><\/li><li  id=\"menu-item-4838\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4838 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4838\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/abdeckungen-miniaturkugellager\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Closures<\/span><\/a><\/li><li  id=\"menu-item-4836\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4836 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4836\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/vorspannung-und-duplex-einbau-miniaturkugellager\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Preload and duplex installation<\/span><\/a><\/li><li  id=\"menu-item-4839\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4839 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4839\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  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aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Tolerance class<\/span><\/a><\/li><li  id=\"menu-item-4833\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4833 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4833\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/radiale-und-axiale-lagerluft-und-beruehrungswinkel\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Bearing clearance and contact angle<\/span><\/a><\/li><li  id=\"menu-item-4832\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4832 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4832\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/reibung-miniaturkugellager\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Friction<\/span><\/a><\/li><li  id=\"menu-item-4831\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4831 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4831\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  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class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Group classification<\/span><\/a><\/li><li  id=\"menu-item-4829\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4829 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4829\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/schmierung-miniaturkugellager\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Lubrication<\/span><\/a><\/li><li  id=\"menu-item-4827\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4827 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4827\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/hinweis-fuer-den-einbau\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Handling and installation<\/span><\/a><\/li><li  id=\"menu-item-4826\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4826 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4826\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  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fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Design information<\/span><\/a><\/li><li  id=\"menu-item-4824\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4824 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4824\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/bestimmung-der-belastungen-miniaturkugellager\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Load Calculations<\/span><\/a><\/li><li  id=\"menu-item-4823\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4823 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4823\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/berechnung-der-theoretischen-lebensdauer-von-kugellagern-miniaturkugellager\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Service life calculations<\/span><\/a><\/li><li  id=\"menu-item-4822\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-4822 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"4822\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/verpackung-von-miniaturkugellager\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Packaging<\/span><\/a><\/li><li  id=\"menu-item-5410\"  class=\"menu-item menu-item-type-post_type menu-item-object-page menu-item-5410 awb-menu__li awb-menu__main-li awb-menu__main-li_regular\"  data-item-id=\"5410\"><span class=\"awb-menu__main-background-default awb-menu__main-background-default_fade\"><\/span><span class=\"awb-menu__main-background-active awb-menu__main-background-active_fade\"><\/span><a  href=\"https:\/\/product-myonic.com\/kennlinien-der-praezisionsfederscheiben\/\" class=\"awb-menu__main-a awb-menu__main-a_regular fusion-flex-link\"><span class=\"awb-menu__i awb-menu__i_main fusion-megamenu-icon\"><i class=\"glyphicon fa-angle-right fas\" aria-hidden=\"true\"><\/i><\/span><span class=\"menu-text\">Characteristic curves of spring washers<\/span><\/a><\/li><\/ul><\/nav><\/div><\/div><div class=\"fusion-layout-column fusion_builder_column fusion-builder-column-4 fusion-flex-column\" style=\"--awb-padding-top:0px;--awb-padding-right:0px;--awb-padding-bottom:0px;--awb-padding-left:0px;--awb-bg-size:cover;--awb-width-large:70%;--awb-margin-top-large:0px;--awb-spacing-right-large:2.7428571428571%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.7428571428571%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-2\" style=\"--awb-text-transform:none;--awb-margin-top:20px;\"><p>The theoretical service life is only achieved in practice if the following conditions are met:<\/p>\n<\/div><ul style=\"--awb-iconcolor:#80adce;--awb-textcolor:#474c54;--awb-line-height:27.2px;--awb-icon-width:27.2px;--awb-icon-height:27.2px;--awb-icon-margin:11.2px;--awb-content-margin:38.4px;\" class=\"fusion-checklist fusion-checklist-1 fusion-checklist-default type-icons\"><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>Careful determination of the magnitude and direction of permanent loads;<\/p>\n<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>constant speeds;<\/p>\n<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>constant temperatures of no more than 100\u00b0C;<\/p>\n<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>maximum cleanliness during installation and operation;<\/p>\n<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>Careful selection and dosing of the lubricant;<\/p>\n<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>Installation in strict compliance with the instructions under the section &#8220;Handling and installation&#8221;<\/p>\n<\/div><\/li><\/ul><div class=\"fusion-text fusion-text-3\" style=\"--awb-text-transform:none;--awb-margin-top:2%;\"><p>In more complex applications or cases of doubt, we recommend that you seek our technical advice.<\/p>\n<p>We have used the formulas and theories of the ISO and AFBMA standards to calculate the load rating and theoretical service life of ball bearings.<\/p>\n<\/div><div class=\"fusion-text fusion-text-4\" style=\"--awb-text-transform:none;--awb-margin-top:2%;\"><h3>1. Service life of radial and axial ball bearings<\/h3>\n<\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-0 fusion_builder_column_inner_1_5 1_5 fusion-flex-column\" style=\"--awb-bg-color:rgba(188,188,188,0);--awb-bg-color-hover:rgba(188,188,188,0);--awb-bg-size:cover;--awb-width-large:20%;--awb-margin-top-large:1%;--awb-spacing-right-large:9.6%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:9.6%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-1 hover-type-none\"><img decoding=\"async\" width=\"134\" height=\"60\" title=\"Formel1\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27134%27%20height%3D%2760%27%20viewBox%3D%270%200%20134%2060%27%3E%3Crect%20width%3D%27134%27%20height%3D%2760%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/product-myonic.com\/wp-content\/uploads\/2024\/05\/Formel1.svg\" alt class=\"lazyload img-responsive wp-image-5172\"\/><\/span><\/div><\/div><\/div><\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">L<sub>10<\/sub><\/td>\n<td align=\"left\">= Service life in millions of revolutions<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<\/td>\n<td align=\"left\">= Dynamic load rating in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P<\/td>\n<td align=\"left\">= Dynamic equivalent load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C\/P<\/td>\n<td align=\"left\">= Load safety<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-5\" style=\"--awb-text-transform:none;--awb-margin-top:2%;\"><h3>2. Service life in hours<\/h3>\n<\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-1 fusion_builder_column_inner_1_5 1_5 fusion-flex-column\" style=\"--awb-bg-color:rgba(188,188,188,0);--awb-bg-color-hover:rgba(188,188,188,0);--awb-bg-size:cover;--awb-width-large:20%;--awb-margin-top-large:1%;--awb-spacing-right-large:9.6%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:9.6%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-2 hover-type-none\"><img decoding=\"async\" width=\"162\" height=\"66\" title=\"formel2\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27162%27%20height%3D%2766%27%20viewBox%3D%270%200%20162%2066%27%3E%3Crect%20width%3D%27162%27%20height%3D%2766%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/product-myonic.com\/wp-content\/uploads\/2024\/05\/formel2.svg\" alt class=\"lazyload img-responsive wp-image-5174\"\/><\/span><\/div><\/div><\/div><\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">L<sub>10<\/sub><\/td>\n<td align=\"left\">= Service life in millions of revolutions<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">n<\/td>\n<td align=\"left\">= Speed in 1\/min<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-2 fusion_builder_column_inner_1_3 1_3 fusion-flex-column\" style=\"--awb-padding-top:10px;--awb-padding-right:30px;--awb-padding-bottom:10px;--awb-padding-left:30px;--awb-bg-size:cover;--awb-border-color:#c4c4c4;--awb-border-top:1px;--awb-border-right:1px;--awb-border-bottom:1px;--awb-border-left:1px;--awb-border-style:solid;--awb-width-large:33.333333333333%;--awb-margin-top-large:2%;--awb-spacing-right-large:5.76%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:5.76%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-text fusion-text-6\"><p>Conversion of units<br \/>\n1 N = 1 kg m\/s<sup>2<\/sup><br \/>\n1 kgf (= 1kp) = 9.81 N<\/p>\n<\/div><\/div><\/div><\/div><div class=\"fusion-text fusion-text-7\" style=\"--awb-text-transform:none;--awb-margin-top:1%;\"><h3>3. Definitions<\/h3>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">L<sub>10<\/sub><\/td>\n<td align=\"left\">= service life in millions of revolutions or in<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">L<sub>10h<\/sub><\/td>\n<td align=\"left\">\n<div>= hours, which is achieved by 90 % of a larger number of identical ball bearings under the same conditions. 40 % of them achieve a five times longer service life.<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<\/td>\n<td align=\"left\">\n<div>= The basic dynamic load rating is a constant, unchanging load at which the bearing has a basic rating life of one million revolutions.<\/div>\n<div>achieved. For radial bearings, the basic radial dynamic load rating Cr refers to the constantly unchanging load capacity.<\/div>\n<div>radial load only. For axial bearings, the axial dynamic load rating Ca refers to the unchanging, only axial load acting in the bearing axis. For each bearing, the load ratings Cr and Ca are specified in the dimension tables, which depend on the bearing size, the number of rolling<\/div>\n<div>body, the material and the bearing design.<\/div>\n<div>are dependent on. The values of the load ratings were determined in accordance with the STN ISO 281 standard. These values are confirmed on the test benches and by the operating results.<\/div>\n<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-8\" style=\"--awb-text-transform:none;--awb-margin-top:4%;\"><p><strong>The dynamic load rating is taken into account:<\/strong><\/p>\n<\/div><ul style=\"--awb-iconcolor:#80adce;--awb-textcolor:#474c54;--awb-line-height:27.2px;--awb-icon-width:27.2px;--awb-icon-height:27.2px;--awb-icon-margin:11.2px;--awb-content-margin:38.4px;\" class=\"fusion-checklist fusion-checklist-2 fusion-checklist-default type-icons\"><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>repeated deformation of various components of the ball bearing (raceways and balls) depending on the mechanical resistance of their materials and their geometric shapes<\/p>\n<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>Frequency of the loads<\/p>\n<\/div><\/li><li class=\"fusion-li-item\" style=\"\"><span class=\"icon-wrapper circle-no\"><i class=\"fusion-li-icon fa-caret-right fas\" aria-hidden=\"true\"><\/i><\/span><div class=\"fusion-li-item-content\">\n<p>an empirical probability factor<\/p>\n<\/div><\/li><\/ul>\n<div class=\"table-2\" style=\"--awb-margin-top:2%;\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">P<\/td>\n<td align=\"left\">\n<div>= Dynamic equivalent load. It is a fictitious load that includes axial and radial load components in such a way that the same values are determined when calculating the theoretical service life as if only a pure radial load (for radial bearings) or a pure axial load (for axial bearings) were acting.<\/div>\n<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<sub>0<\/sub><\/td>\n<td align=\"left\">= Basic static load rating. In the case of radial bearings, this is a radial load and in the case of axial bearings an axially directed constant load, in which a permanent deformation of max. 0.1 promill of the rolling element diameter is achieved at the highest loaded contact point and the following operating conditions apply:<br \/>\n<span style=\"color: #808080;\">\u25a0<\/span> Standstill<br \/>\n<span style=\"color: #808080;\">\u25a0<\/span> Very slow swivel movements<br \/>\n<span style=\"color: #808080;\">\u25a0<\/span> Very low speeds<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P<sub>0<\/sub><\/td>\n<td align=\"left\">= statically equivalent load.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-9\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3>4. Calculation of the dynamic equivalent load<\/h3>\n<\/div><div class=\"fusion-text fusion-text-10\" style=\"--awb-text-transform:none;--awb-margin-top:1%;\"><p>4.1<strong> Radial deep groove ball bearing, single row<\/strong>:<\/p>\n<h3>P = X &#8211; F<sub>r<\/sub> + Y &#8211; F<sub>a<\/sub><\/h3>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P<\/td>\n<td align=\"left\">= Dynamic equivalent load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>r<\/sub><\/td>\n<td align=\"left\">= Radial component of the load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>a<\/sub><\/td>\n<td align=\"left\">= Axial component of the load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">X<\/td>\n<td align=\"left\">= Radial factor of the bearing according to table below<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Y<\/td>\n<td align=\"left\">\u00a0= Axial factor of the bearing according to table below<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-11\" style=\"--awb-text-transform:none;--awb-margin-top:2%;\"><p>4.2 <strong>Axial deep groove ball bearings:<\/strong><\/p>\n<h3>P = F<sub>a<\/sub><\/h3>\n<\/div><div class=\"fusion-text fusion-text-12\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3>5. Calculation of the static load rating<\/h3>\n<\/div><div class=\"fusion-text fusion-text-13\" style=\"--awb-text-transform:none;\"><h3>C<sub>0<\/sub> = S<sub>0<\/sub> &#8211; P<sub>0<\/sub><\/h3>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<sub>0<\/sub><\/td>\n<td align=\"left\">= Basic static load rating in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P<sub>0<\/sub><\/td>\n<td align=\"left\">= Equivalent static load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">S<sub>0<\/sub><\/td>\n<td align=\"left\">= Static load safety factor<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-14\" style=\"--awb-text-transform:none;--awb-margin-top:4%;\"><div>The value for the static load safety factor can be selected as follows, depending on the operating conditions and the requirements for the bearings:<\/div>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">S<sub>0<\/sub><\/td>\n<td align=\"left\">= 0.5 to 0.7 for low requirements and vibration-free operation<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">S<sub>0<\/sub><\/td>\n<td align=\"left\">= 1.0 to 1.2 for normal requirements and vibration-free operation<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">S<sub>0<\/sub><\/td>\n<td align=\"left\">= 1.5 to 2.0 for high requirements and impact loads<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-15\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3>6. Calculation of the equivalent static load<\/h3>\n<\/div><div class=\"fusion-text fusion-text-16\" style=\"--awb-text-transform:none;--awb-margin-top:1%;\"><p>6.1 <strong>Radial deep groove ball bearing<\/strong>: <strong><br \/>\n<\/strong><\/p>\n<h3>P<sub>0<\/sub> = X<sub>0<\/sub> &#8211; F<sub>r<\/sub> + Y<sub>0<\/sub> &#8211; F<sub>a<\/sub><\/h3>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P<sub>0<\/sub><\/td>\n<td align=\"left\">= Equivalent static bearing load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>r<\/sub><\/td>\n<td align=\"left\">= Radial component of the largest static load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>a<\/sub><\/td>\n<td align=\"left\">= Axial component of the largest static load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">X<sub>0<\/sub><\/td>\n<td align=\"left\">= Radial load factor<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Y<sub>0<\/sub><\/td>\n<td align=\"left\">= Axial load factor<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-17\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><p>If the statically equivalent bearing load P<sub>0<\/sub> &lt; F<sub>r<\/sub> determined according to this formula is used, P<sub>0<\/sub> = F<sub>r<\/sub> must be calculated. Values for the factors X<sub>0<\/sub> and Y<sub>0<\/sub>, X<sub>0<\/sub> = 0.6 Y<sub>0<\/sub> = 0.5<\/p>\n<\/div><div class=\"fusion-text fusion-text-18\" style=\"--awb-text-transform:none;--awb-margin-top:1%;\"><p>6.2 <strong>Axial deep groove ball bearings:<\/strong><\/p>\n<h3>P<sub>0<\/sub> = F<sub>a<\/sub><\/h3>\n<\/div><div class=\"fusion-text fusion-text-19\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3>7. Duplex bearing<\/h3>\n<\/div><div class=\"fusion-text fusion-text-20\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><div>If two single-row radial deep groove ball bearings are used in a duplex arrangement (X, O or tandem), the following relationships must be taken into account when calculating the basic dynamic load rating and the dynamic equivalent load.<\/div>\n<\/div><div class=\"fusion-text fusion-text-21\" style=\"--awb-text-transform:none;--awb-margin-top:1%;\"><p>7.1 <strong>Duplex arrangement X or O<\/strong><\/p>\n<\/div><div class=\"fusion-text fusion-text-22\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><p>Basic dynamic load rating<\/p>\n<\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-3 fusion_builder_column_inner_1_5 1_5 fusion-flex-column\" style=\"--awb-bg-color:rgba(188,188,188,0);--awb-bg-color-hover:rgba(188,188,188,0);--awb-bg-size:cover;--awb-width-large:20%;--awb-margin-top-large:0px;--awb-spacing-right-large:9.6%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:9.6%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-3 hover-type-none\"><img decoding=\"async\" width=\"162\" height=\"66\" title=\"formel3\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27162%27%20height%3D%2766%27%20viewBox%3D%270%200%20162%2066%27%3E%3Crect%20width%3D%27162%27%20height%3D%2766%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/product-myonic.com\/wp-content\/uploads\/2024\/05\/formel3.svg\" alt class=\"lazyload img-responsive wp-image-5182\"\/><\/span><\/div><\/div><\/div><\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<sub>d<\/sub><\/td>\n<td align=\"left\">= Basic dynamic load rating for a pair of ball bearings in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">\u03b1\u00ba<\/td>\n<td align=\"left\">= Contact angle<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<\/td>\n<td align=\"left\">= Basic dynamic load rating for a single ball bearing in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">L<sub>10<\/sub><\/td>\n<td align=\"left\">= Service life in millions of revolutions<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P<\/td>\n<td align=\"left\">= Dynamic equivalent load in N<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-23\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><p><strong>Dynamic equivalent load<\/strong><\/p>\n<h3>P = X &#8211; F<sub>r<\/sub> + Y &#8211; F<sub>a<\/sub><\/h3>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">P<\/td>\n<td align=\"left\">= Dynamic equivalent load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>r<\/sub><\/td>\n<td align=\"left\">= Radial component of the load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>a<\/sub><\/td>\n<td align=\"left\">= Axial component of the load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">X<\/td>\n<td align=\"left\">= Radial factor for a pair of ball bearings according to page 34<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Y<\/td>\n<td align=\"left\">= Axial factor for a ball bearing pair according to page 34<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-24\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><p><strong>Duplex arrangement X or O with preload<\/strong><\/p>\n<h3>F<sub>a<\/sub> = 0.8 (F<sub>ap<\/sub> + F<sub>a1<\/sub>)*<\/h3>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>a<\/sub><\/td>\n<td align=\"left\">= Effective axial load in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>ap<\/sub><\/td>\n<td align=\"left\">= Preload of the ball bearing pair in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">F<sub>a1<\/sub><\/td>\n<td align=\"left\">= External axial force acting on the pre-loaded ball bearing pair in N.<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-25\" style=\"--awb-font-size:13px;--awb-text-transform:none;--awb-margin-top:3%;\"><p>* The ratio of preload Fap and axial force F<sub>a1<\/sub> must be selected so that no bearing is completely relaxed. Within the radial clearances and contact angles recommended by myonic, this condition is met if:<\/p>\n<\/div><div class=\"fusion-text fusion-text-26\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3><strong>F<sub>ap<\/sub> \u2265 0.35 F<sub>a1<\/sub><\/strong><\/h3>\n<\/div><div class=\"fusion-text fusion-text-27\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3>Duplex arrangement X or O without preload or with low axial play<\/h3>\n<\/div><div class=\"fusion-text fusion-text-28\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><div>For these cases, the calculation must be carried out using the formulas listed under point 7.1. When determining the factors X and Y from the table at the bottom of this page, the number of balls of two bearings must be taken into account (represented here by the &#8220;2&#8221; in the denominator).<\/div>\n<\/div><div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-4 fusion_builder_column_inner_2_3 2_3 fusion-flex-column\" style=\"--awb-bg-color:rgba(188,188,188,0.02);--awb-bg-color-hover:rgba(188,188,188,0.02);--awb-bg-size:cover;--awb-width-large:66.666666666667%;--awb-margin-top-large:2%;--awb-spacing-right-large:2.88%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:2.88%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-4 hover-type-none\"><img decoding=\"async\" width=\"1024\" height=\"1024\" title=\"formel4_en\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27672%27%20height%3D%2768%27%20viewBox%3D%270%200%20672%2068%27%3E%3Crect%20width%3D%27672%27%20height%3D%2768%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/product-myonic.com\/wp-content\/uploads\/2024\/08\/formel4_en.svg\" alt class=\"lazyload img-responsive wp-image-6491\"\/><\/span><\/div><\/div><\/div><\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Z<\/td>\n<td align=\"left\">= Number of balls<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">D<sub>w<\/sub><\/td>\n<td align=\"left\">= Diamter of the balls in mm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-29\" style=\"--awb-text-transform:none;--awb-margin-top:1%;\"><p>7.2<strong> Tandem arrangement<br \/>\n<\/strong><\/p>\n<\/div><div class=\"fusion-text fusion-text-30\" style=\"--awb-text-transform:none;--awb-margin-top:1%;\"><p><strong>Basic dynamic load rating<\/strong><\/p>\n<h3>C<sub>t<\/sub> = C &#8211; N<sup>0.7<\/sup><\/h3>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\"><strong>Definitions:<\/strong><\/td>\n<td align=\"left\"><\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<sub>t<\/sub><\/td>\n<td align=\"left\">= Dynamic load rating of the tandem arrangement in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">C<\/td>\n<td align=\"left\">= Dynamic load rating of a single ball bearing in N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">N<\/td>\n<td align=\"left\">= Number of ball bearings<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-text fusion-text-31\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><p>The dynamic equivalent load and the rating life are calculated taking C<sub>t<\/sub> into account, as for single bearings with a row of balls. The factors X, Y and e are in the table at the bottom of this page.<\/p>\n<\/div><div class=\"fusion-text fusion-text-32\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3>8. Calculation example<\/h3>\n<\/div><div class=\"fusion-text fusion-text-33\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><p><strong>Example 1<\/strong><br \/>\nCalculation of the theoretical rating life L<sub>h<\/sub> of a radial deep groove ball bearing R 2570X for the following operating conditions:<\/p>\n<\/div>\n<div class=\"table-2\">\n<table width=\"100%\">\n<tbody>\n<tr>\n<td align=\"left\">Radial load<\/td>\n<td align=\"left\">F<sub>r<\/sub> = 5.7 N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Axial load<\/td>\n<td align=\"left\">F<sub>a<\/sub> = 2.8 N<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Speed<\/td>\n<td align=\"left\">n = 8000 rpm<\/td>\n<\/tr>\n<tr>\n<td align=\"left\">Radial clearance<\/td>\n<td align=\"left\">2 \/ 5 \u03bcm<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<\/div>\n<div class=\"fusion-builder-row fusion-builder-row-inner fusion-row fusion-flex-align-items-flex-start fusion-flex-content-wrap\" style=\"width:104% !important;max-width:104% !important;margin-left: calc(-4% \/ 2 );margin-right: calc(-4% \/ 2 );\"><div class=\"fusion-layout-column fusion_builder_column_inner fusion-builder-nested-column-5 fusion-flex-column\" style=\"--awb-bg-color:rgba(188,188,188,0);--awb-bg-color-hover:rgba(188,188,188,0);--awb-bg-size:cover;--awb-width-large:43%;--awb-margin-top-large:3%;--awb-spacing-right-large:4.4651162790698%;--awb-margin-bottom-large:20px;--awb-spacing-left-large:4.4651162790698%;--awb-width-medium:100%;--awb-order-medium:0;--awb-spacing-right-medium:1.92%;--awb-spacing-left-medium:1.92%;--awb-width-small:100%;--awb-order-small:0;--awb-spacing-right-small:1.92%;--awb-spacing-left-small:1.92%;\" data-scroll-devices=\"small-visibility,medium-visibility,large-visibility\"><div class=\"fusion-column-wrapper fusion-column-has-shadow fusion-flex-justify-content-flex-start fusion-content-layout-column\"><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-5 hover-type-none\"><a href=\"https:\/\/product-myonic.com\/wp-content\/uploads\/2024\/08\/formel5_eng.svg\" class=\"fusion-lightbox\" data-rel=\"iLightbox[ff8051c367a0e2c24f2]\" data-title=\"formel5_eng\" title=\"formel5_eng\"><img decoding=\"async\" width=\"1024\" height=\"1024\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27320%27%20height%3D%27385%27%20viewBox%3D%270%200%20320%20385%27%3E%3Crect%20width%3D%27320%27%20height%3D%27385%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" data-orig-src=\"https:\/\/product-myonic.com\/wp-content\/uploads\/2024\/08\/formel5_eng.svg\" alt class=\"lazyload img-responsive wp-image-6494\"\/><\/a><\/span><\/div><\/div><\/div><\/div><div class=\"fusion-text fusion-text-34\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><h3>Values of X and Y for radial ball bearings<\/h3>\n<\/div><div class=\"fusion-text fusion-text-35\" style=\"--awb-text-transform:none;--awb-margin-top:3%;\"><p>For detailed calculations, please contact myonic for further assistance.<\/p>\n<\/div><div class=\"fusion-image-element \" style=\"--awb-caption-title-font-family:var(--h2_typography-font-family);--awb-caption-title-font-weight:var(--h2_typography-font-weight);--awb-caption-title-font-style:var(--h2_typography-font-style);--awb-caption-title-size:var(--h2_typography-font-size);--awb-caption-title-transform:var(--h2_typography-text-transform);--awb-caption-title-line-height:var(--h2_typography-line-height);--awb-caption-title-letter-spacing:var(--h2_typography-letter-spacing);\"><span class=\" fusion-imageframe imageframe-none imageframe-6 hover-type-none\"><img decoding=\"async\" width=\"1024\" height=\"1024\" title=\"Werte-von-X-und-Y-fuer-Radialkugellager_englisch\" src=\"data:image\/svg+xml,%3Csvg%20xmlns%3D%27http%3A%2F%2Fwww.w3.org%2F2000%2Fsvg%27%20width%3D%27513%27%20height%3D%27236%27%20viewBox%3D%270%200%20513%20236%27%3E%3Crect%20width%3D%27513%27%20height%3D%27236%27%20fill-opacity%3D%220%22%2F%3E%3C%2Fsvg%3E\" 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