{"id":100023,"date":"2026-02-15T20:06:32","date_gmt":"2026-02-15T20:06:32","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100023"},"modified":"2026-02-15T20:06:32","modified_gmt":"2026-02-15T20:06:32","slug":"bearing-minimum-load","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/bn\/calculators\/bearing-minimum-load\/","title":{"rendered":"Bearing Minimum Load Calculator | Prevent Skidding | Free Online Tool"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Bearing Minimum Load Calculator\",\"alternateName\":[\"Bearing Skidding Calculator\",\"Minimum Radial Load Calculator\"],\"description\":\"Free online calculator for bearing minimum load to prevent roller\/ball skidding. Supports multiple bearing types with grease and oil lubrication.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/bearing-minimum-load\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2025-01-01\",\"dateModified\":\"2026-02-15\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true,\"featureList\":[\"Multiple bearing types\",\"Grease and oil lubrication\",\"Mean diameter calculation\",\"Simplified SKF formula\",\"Auto-calculation on input change\"],\"keywords\":\"minimum load, skidding, bearing, roller skidding, preload\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"Why do bearings need a minimum load?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Rolling bearings need a minimum load to ensure proper rolling contact between the rolling elements and raceways. Without sufficient load, the balls or rollers may slide (skid) instead of roll, causing smearing damage, increased heat, and premature failure.\"}},\n{\"@type\":\"Question\",\"name\":\"What causes bearing skidding?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Skidding occurs when the friction force is insufficient to maintain rolling contact. This happens at high speeds with light loads, especially with grease lubrication. The rolling elements accelerate in the unloaded zone and decelerate in the loaded zone, causing sliding.\"}},\n{\"@type\":\"Question\",\"name\":\"How is the minimum load factor kr determined?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The minimum load factor kr depends on the bearing type: approximately 0.01 for deep groove ball bearings, 0.02 for cylindrical roller bearings, and 0.02 for spherical roller bearings. These values account for the internal geometry and contact conditions.\"}},\n{\"@type\":\"Question\",\"name\":\"Does lubrication type affect minimum load?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Yes. Grease-lubricated bearings generally require higher minimum loads than oil-lubricated ones because grease has higher viscous drag, especially at startup. The kinematic viscosity used in the formula should reflect the actual lubricant at operating temperature.\"}},\n{\"@type\":\"Question\",\"name\":\"What if my actual load is below the minimum?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"If the actual load is below the minimum, you can: apply a preload (axial spring), use a heavier bearing arrangement, increase the load path, or switch to a bearing type with lower minimum load requirements. For vertical shafts, adding a spring-loaded washer is common.\"}}\n]}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[\n{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},\n{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},\n{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Bearing Minimum Load\",\"item\":\"https:\/\/vibromera.eu\/calculators\/bearing-minimum-load\/\"}\n]}\n<\/script>\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.googleapis.com\">\n\n<link rel=\"preconnect\" href=\"https:\/\/fonts.gstatic.com\" crossorigin>\n\n<link 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print{.vc-section-body{max-height:none!important}.vc-faq-a{max-height:none!important}.vc-results{max-height:none!important;padding:24px!important}.vc-copy-btn,.vc-section-chevron,.vc-faq-chevron,.vc-presets,.vc-promo{display:none!important}}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-min-load\">\n\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool #047<\/p>\n    <h1 class=\"vc-header-title\">Bearing Minimum Load Calculator<\/h1>\n    <p class=\"vc-header-subtitle\">Calculate the minimum radial load required to prevent roller\/ball skidding. Enter bearing dimensions, speed, and lubrication type.<\/p>\n    <div class=\"vc-badges\">\n        <span class=\"vc-badge\">Skidding Prevention<\/span>\n        <span class=\"vc-badge\">Grease \/ Oil<\/span>\n        <span class=\"vc-badge\">Ball &amp; Roller<\/span>\n    <\/div>\n<\/header>\n\n<div class=\"vc-card\">\n    <form class=\"vc-form\" id=\"vc-form\" autocomplete=\"off\">\n        <div class=\"vc-form-grid\">\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-bore\">Bearing Bore d <span class=\"vc-label-hint\">(mm)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-bore\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 40\" value=\"40\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-od\">Bearing OD D <span class=\"vc-label-hint\">(mm)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-od\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 80\" value=\"80\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-speed\">Speed <span class=\"vc-label-hint\">(RPM)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-speed\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 3000\" value=\"3000\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-visc\">Kinematic Viscosity \u03bd <span class=\"vc-label-hint\">(mm\u00b2\/s at operating temp)<\/span><\/label>\n                <input class=\"vc-input\" type=\"number\" id=\"vc-visc\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 20\" value=\"20\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-btype\">Bearing Type<\/label>\n                <select class=\"vc-select\" id=\"vc-btype\">\n                    <option value=\"0.01\" selected>Deep groove ball bearing (kr \u2248 0.01)<\/option>\n                    <option value=\"0.02\">Cylindrical roller bearing (kr \u2248 0.02)<\/option>\n                    <option value=\"0.02\">Spherical roller bearing (kr \u2248 0.02)<\/option>\n                    <option value=\"0.015\">Angular contact ball bearing (kr \u2248 0.015)<\/option>\n                    <option value=\"0.018\">Tapered roller bearing (kr \u2248 0.018)<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-lube\">Lubrication Type<\/label>\n                <select class=\"vc-select\" id=\"vc-lube\">\n                    <option value=\"1.0\" selected>Oil lubrication<\/option>\n                    <option value=\"1.5\">Grease lubrication<\/option>\n                <\/select>\n            <\/div>\n        <\/div>\n\n        <div class=\"vc-presets\">\n            <div class=\"vc-presets-label\">Quick presets<\/div>\n            <button type=\"button\" class=\"vc-preset-btn\" data-d=\"40\" data-D=\"80\" data-n=\"3000\" data-v=\"20\" data-kr=\"0.01\" data-lf=\"1.0\">6208 DGBB \/ 3000 RPM \/ oil<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-d=\"50\" data-D=\"110\" data-n=\"5000\" data-v=\"15\" data-kr=\"0.02\" data-lf=\"1.5\">NU310 CRB \/ 5000 \/ grease<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-d=\"80\" data-D=\"170\" data-n=\"1500\" data-v=\"30\" data-kr=\"0.02\" data-lf=\"1.0\">22216 SRB \/ 1500 \/ oil<\/button>\n        <\/div>\n    <\/form>\n\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\">\n            <h2 class=\"vc-results-title\">Results<\/h2>\n            <button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\">\n                <svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg>\n                Copy\n            <\/button>\n        <\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\">\n                <div class=\"vc-rcard-label\">Minimum Radial Load F_min<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-fmin\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Mean Diameter dm<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-dm\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Factor kr<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-kr\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">\u03bd \u00d7 n Product<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-vn\">\u2014<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<!-- Theory -->\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\">\n        <span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Formulas<\/span><\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\">\n        <div class=\"vc-section-inner vc-theory\">\n            <h3>Minimum Load Formula (Simplified)<\/h3>\n            <p>The minimum radial load to prevent skidding is estimated as:<\/p>\n            <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n            <ul>\n                <li><strong>k<sub>r<\/sub><\/strong> \u2014 bearing type factor (0.01 for DGBB, 0.02 for CRB\/SRB)<\/li>\n                <li><strong>\u03bd<\/strong> \u2014 kinematic viscosity at operating temperature (mm\u00b2\/s)<\/li>\n                <li><strong>n<\/strong> \u2014 rotational speed (RPM)<\/li>\n                <li><strong>d<sub>m<\/sub><\/strong> \u2014 mean bearing diameter = (d + D) \/ 2 (mm)<\/li>\n            <\/ul>\n\n            <h3>Mean Diameter<\/h3>\n            <div class=\"vc-formula-box\" id=\"vc-katex-2\"><\/div>\n\n            <h3>Typical kr Values<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Bearing Type<\/th><th>k<sub>r<\/sub><\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>Deep groove ball bearing<\/td><td>0.01<\/td><\/tr>\n                    <tr><td>Angular contact ball bearing<\/td><td>0.015<\/td><\/tr>\n                    <tr><td>Cylindrical roller bearing<\/td><td>0.02<\/td><\/tr>\n                    <tr><td>Tapered roller bearing<\/td><td>0.018<\/td><\/tr>\n                    <tr><td>Spherical roller bearing<\/td><td>0.02<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n\n            <h3>Practical Example<\/h3>\n            <div class=\"vc-example-box\">\n                <div class=\"vc-example-title\">Example \u2014 6208 Deep Groove Ball Bearing<\/div>\n                <p><strong>Given:<\/strong> d = 40 mm, D = 80 mm, n = 3000 RPM, \u03bd = 20 mm\u00b2\/s, oil lubrication<\/p>\n                <p>d<sub>m<\/sub> = (40 + 80) \/ 2 = 60 mm<\/p>\n                <p>F<sub>min<\/sub> = 0.01 \u00d7 (20 \u00d7 3000)<sup>2\/3<\/sup> \u00d7 60\u00b3 \/ 1000<\/p>\n                <p>= 0.01 \u00d7 3915 \u00d7 0.216 = <strong>0.85 kN<\/strong><\/p>\n            <\/div>\n\n            <div class=\"vc-warning-box\">\n                <p style=\"margin:0;font-size:14px;color:var(--vc-ink-secondary);\"><strong>\u26a0\ufe0f Note:<\/strong> This is a simplified estimation. For critical applications, consult the bearing manufacturer&#8217;s specific minimum load guidelines. Actual minimum load depends on internal clearance, cage type, and lubricant properties.<\/p>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\">\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-modified-life-l10a\/\">Bearing Modified Life L10a<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-equivalent-load\/\">Bearing Equivalent Load<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-speed-factor\/\">Bearing Speed Factor n\u00d7dm<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-grease-quantity\/\">Grease Quantity<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-relubrication-interval\/\">Relubrication Interval<\/a>\n    <\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-faq\">\n    <button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\">\n        <span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span>\n        <svg class=\"vc-section-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg>\n    <\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-faq-list\" id=\"vc-faq-list\"><\/div><\/div><\/div>\n<\/div>\n\n<div class=\"vc-promo\">\n    <div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional field balancing instruments and vibration analyzers. 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Last updated: February 2026<\/p>\n    <div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div>\n<\/footer>\n\n<\/div>\n\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function(){\n    'use strict';\n    var SLUG='bearing-minimum-load';\n    function $(id){return document.getElementById(id)}\n    function fmt(n,d){if(isNaN(n)||!isFinite(n))return'\u2014';var f=n.toFixed(d===undefined?2:d);return f.replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'')}\n\n    function calculate(){\n        var d=parseFloat($('vc-bore').value);\n        var D=parseFloat($('vc-od').value);\n        var n=parseFloat($('vc-speed').value);\n        var v=parseFloat($('vc-visc').value);\n        var kr=parseFloat($('vc-btype').value);\n        var lf=parseFloat($('vc-lube').value);\n        if(!d||d<=0||!D||D<=d||!n||n<=0||!v||v<=0){$('vc-results').classList.remove('vc-visible');return;}\n\n        var dm=(d+D)\/2;\n        var vn=v*n;\n        var Fmin=kr*Math.pow(vn,2\/3)*Math.pow(dm,3)\/1000*lf;\n\n        $('vc-r-fmin').innerHTML=fmt(Fmin,Fmin<1?3:2)+' <span class=\"vc-rcard-unit\">kN<\/span>';\n        $('vc-r-dm').innerHTML=fmt(dm,1)+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-r-kr').innerHTML=fmt(kr,3);\n        $('vc-r-vn').innerHTML=Math.round(vn).toLocaleString('en-US');\n        $('vc-results').classList.add('vc-visible');\n\n        var u=new URL(window.location);u.searchParams.set('d',d);u.searchParams.set('D',D);u.searchParams.set('n',n);u.searchParams.set('v',v);history.replaceState(null,'',u.toString());\n        saveHistory({d:d,D:D,n:n,v:v,kr:kr,_summary:'d='+d+' D='+D+' n='+n+' \u2192 Fmin='+fmt(Fmin,2)+' kN'});\n    }\n\n    document.querySelectorAll('.vc-preset-btn').forEach(function(btn){btn.addEventListener('click',function(e){e.preventDefault();$('vc-bore').value=this.getAttribute('data-d');$('vc-od').value=this.getAttribute('data-D');$('vc-speed').value=this.getAttribute('data-n');$('vc-visc').value=this.getAttribute('data-v');$('vc-btype').value=this.getAttribute('data-kr');$('vc-lube').value=this.getAttribute('data-lf');calculate();});});\n    $('vc-form').addEventListener('input',calculate);\n    $('vc-form').addEventListener('change',calculate);\n\n    $('vc-copy-btn').addEventListener('click',function(){\n        var text='Bearing Minimum Load\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nd = '+$('vc-bore').value+' mm, D = '+$('vc-od').value+' mm\\nn = '+$('vc-speed').value+' RPM, \u03bd = '+$('vc-visc').value+' mm\u00b2\/s\\nFmin = '+$('vc-r-fmin').textContent+'\\ndm = '+$('vc-r-dm').textContent+'\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nvibromera.eu';\n        if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('vc-copy-btn');b.classList.add('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg> Copied!';setTimeout(function(){b.classList.remove('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy';},2000);});}\n    });\n\n    document.querySelectorAll('.vc-section-toggle').forEach(function(btn){btn.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'));});});\n\n    var faqData=[\n        {q:'Why do bearings need a minimum load?',a:'<p>Rolling bearings need a minimum load to ensure proper rolling contact. Without sufficient load, balls or rollers may slide (skid) instead of roll, causing smearing damage, increased heat, and premature failure.<\/p>'},\n        {q:'What causes bearing skidding?',a:'<p>Skidding occurs when the friction force is insufficient to maintain rolling contact. This happens at high speeds with light loads, especially with grease lubrication. The rolling elements accelerate in the unloaded zone and decelerate in the loaded zone, causing sliding.<\/p>'},\n        {q:'How is the minimum load factor kr determined?',a:'<p>The factor k<sub>r<\/sub> depends on bearing type: approximately 0.01 for deep groove ball bearings, 0.015 for angular contact, 0.018 for tapered roller, and 0.02 for cylindrical and spherical roller bearings.<\/p>'},\n        {q:'Does lubrication type affect minimum load?',a:'<p>Yes. Grease-lubricated bearings generally require higher minimum loads (factor \u2248 1.5\u00d7) than oil-lubricated ones because grease has higher viscous drag, especially at startup and low temperatures.<\/p>'},\n        {q:'What if my actual load is below the minimum?',a:'<p>If actual load is below the minimum, consider: applying a preload (axial spring), using a heavier bearing arrangement, increasing the load path, or switching to a bearing type with lower minimum load requirements. Spring-loaded washers are common on vertical shafts.<\/p>'}\n    ];\n    var fl=$('vc-faq-list');faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>';});\n    fl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(b)b.closest('.vc-faq-item').classList.toggle('vc-open');});\n\n    function saveHistory(entry){var key='vc_history_'+SLUG;var arr=[];try{arr=JSON.parse(localStorage.getItem(key))||[];}catch(e){}entry._ts=new Date().toISOString();arr.unshift(entry);if(arr.length>10)arr=arr.slice(0,10);try{localStorage.setItem(key,JSON.stringify(arr));}catch(e){}}\n    function loadParams(){var p=new URLSearchParams(window.location.search);p.forEach(function(v,k){var el=$(k)||$('vc-'+k);if(el)el.value=v;});}\n    function renderFormulas(){try{\n        katex.render('F_{\\\\min} = k_r \\\\cdot (\\\\nu \\\\cdot n)^{2\/3} \\\\cdot \\\\frac{d_m^3}{1000} \\\\quad [\\\\text{kN}]',$('vc-katex-1'),{displayMode:true,throwOnError:false});\n        katex.render('d_m = \\\\frac{d + D}{2} \\\\quad [\\\\text{mm}]',$('vc-katex-2'),{displayMode:true,throwOnError:false});\n    }catch(e){}}\n    function init(){loadParams();renderFormulas();calculate();}\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init);}else{init();}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Free online calculator for bearing minimum load to prevent roller\/ball skidding. Enter bearing type, speed, bore diameter, and lubrication type. Uses simplified SKF formula.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100023","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100023","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100023\/revisions"}],"predecessor-version":[{"id":100335,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/calculator\/100023\/revisions\/100335"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/media?parent=100023"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/categories?post=100023"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/bn\/wp-json\/wp\/v2\/tags?post=100023"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}