{"id":100026,"date":"2026-02-15T20:07:04","date_gmt":"2026-02-15T20:07:04","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100026"},"modified":"2026-02-15T20:07:04","modified_gmt":"2026-02-15T20:07:04","slug":"bearing-relubrication-interval","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/tl\/calculators\/bearing-relubrication-interval\/","title":{"rendered":"Kalkulador ng Agwat ng Relubrication ng Bearing | Pamamaraan ng SKF | Libreng Online na Kasangkapan"},"content":{"rendered":"\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Bearing Relubrication Interval Calculator\",\"alternateName\":[\"SKF Relubrication Calculator\",\"Grease Life Calculator\"],\"description\":\"Free online calculator for bearing grease relubrication interval using the SKF method.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/bearing-relubrication-interval\/\",\"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}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"How is the relubrication interval calculated?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The SKF method uses: tf = K \u00d7 (14\u00d710\u2076\/(n\u00d7\u221adm) \u2212 4\u00d7dm) hours as a base, then adjusts for bearing type, temperature, contamination, and orientation. K depends on bearing type (1.0 for DGBB, 0.5\u20130.8 for roller bearings).\"}},\n{\"@type\":\"Question\",\"name\":\"What factors reduce the relubrication interval?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"High temperature (halve for each 15\u00b0C above 70\u00b0C), heavy contamination (0.5\u20130.1\u00d7), vertical shaft (0.5\u00d7), vibration\/shock loads (0.5\u20130.75\u00d7), and high humidity (0.5\u00d7) all reduce the interval.\"}},\n{\"@type\":\"Question\",\"name\":\"What is a typical relubrication interval?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"For standard electric motors at 1500 RPM with DGBB, typical intervals are 10,000\u201320,000 hours. For high-speed applications, it can be as low as 500\u20132,000 hours. Very slow or sealed bearings may last 30,000+ hours.\"}},\n{\"@type\":\"Question\",\"name\":\"Does the SKF method apply to all grease types?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"The base SKF formula assumes standard lithium\/lithium-complex grease. For synthetic or polyurea greases, the interval can be multiplied by 2\u20134. For calcium-based greases, reduce by 0.5.\"}},\n{\"@type\":\"Question\",\"name\":\"Should I regrease sealed bearings?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Factory-sealed bearings (2RS, ZZ) are typically 'lubricated for life' and should not be regreased. Their grease life depends on temperature and speed. Replace the bearing when grease is depleted.\"}}\n]}<\/script>\n\n<script type=\"application\/ld+json\">{\"@context\":\"https:\/\/schema.org\",\"@type\":\"BreadcrumbList\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Home\",\"item\":\"https:\/\/vibromera.eu\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Calculators\",\"item\":\"https:\/\/vibromera.eu\/calculators\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Relubrication Interval\",\"item\":\"https:\/\/vibromera.eu\/calculators\/bearing-relubrication-interval\/\"}]}<\/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 href=\"https:\/\/fonts.googleapis.com\/css2?family=DM+Sans:ital,opsz,wght@0,9..40,300;0,9..40,400;0,9..40,500;0,9..40,600;0,9..40,700;1,9..40,400&#038;family=JetBrains+Mono:wght@400;500;600&#038;family=Fraunces:opsz,wght@9..144,700;9..144,800&#038;display=swap\" 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16px;font-size:13px;color:var(--vc-ink-muted)}.vc-footer a{color:var(--vc-accent);text-decoration:none}.vc-footer a:hover{text-decoration:underline}.vc-footer-links{margin-top:8px;font-size:12px}.vc-footer-links a{margin:0 8px}@media 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}}<\/style>\n\n<div class=\"vc-calculator\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool #052<\/p>\n    <h1 class=\"vc-header-title\">Bearing Relubrication Interval Calculator<\/h1>\n    <p class=\"vc-header-subtitle\">Calculate grease relubrication interval using the SKF-style method. Adjustments for temperature, contamination, bearing type, and orientation.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">SKF Method<\/span><span class=\"vc-badge\">Temperature Adj.<\/span><span class=\"vc-badge\">Contamination Adj.<\/span><\/div>\n<\/header>\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\"><label class=\"vc-label\" for=\"vc-bore\">Bearing Bore d <span class=\"vc-label-hint\">(mm)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-bore\" inputmode=\"decimal\" step=\"any\" min=\"5\" placeholder=\"e.g. 40\" value=\"40\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-od\">Bearing OD D <span class=\"vc-label-hint\">(mm)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-od\" inputmode=\"decimal\" step=\"any\" min=\"10\" placeholder=\"e.g. 80\" value=\"80\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-speed\">Speed <span class=\"vc-label-hint\">(RPM)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-speed\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 1500\" value=\"1500\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-btype\">Bearing Type Factor K<\/label>\n                <select class=\"vc-select\" id=\"vc-btype\"><option value=\"1.0\" selected>Deep groove ball (K=1.0)<\/option><option value=\"5.0\">Angular contact ball (K=5.0)<\/option><option value=\"0.5\">Cylindrical roller (K=0.5)<\/option><option value=\"0.1\">Spherical roller (K=0.1)<\/option><option value=\"0.8\">Tapered roller (K=0.8)<\/option><\/select>\n            <\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-temp\">Operating Temperature <span class=\"vc-label-hint\">(\u00b0C)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-temp\" inputmode=\"decimal\" step=\"any\" min=\"-20\" max=\"200\" placeholder=\"e.g. 70\" value=\"70\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-contam\">Contamination Level<\/label>\n                <select class=\"vc-select\" id=\"vc-contam\"><option value=\"1.0\" selected>Clean \/ normal<\/option><option value=\"0.7\">Moderate dust<\/option><option value=\"0.4\">Heavy dust \/ moisture<\/option><option value=\"0.2\">Severe (water, abrasive)<\/option><\/select>\n            <\/div>\n        <\/div>\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=\"1500\" data-k=\"1.0\" data-t=\"70\" data-c=\"1.0\">6208 DGBB \/ 1500 RPM \/ clean<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-d=\"50\" data-D=\"110\" data-n=\"3000\" data-k=\"0.5\" data-t=\"80\" data-c=\"0.7\">NU310 CRB \/ 3000 \/ moderate<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-d=\"80\" data-D=\"170\" data-n=\"750\" data-k=\"0.1\" data-t=\"90\" data-c=\"0.4\">22216 SRB \/ 750 \/ heavy dust<\/button>\n        <\/div>\n    <\/form>\n    <div class=\"vc-results\" id=\"vc-results\">\n        <div class=\"vc-results-head\"><h2 class=\"vc-results-title\">Results<\/h2><button type=\"button\" class=\"vc-copy-btn\" id=\"vc-copy-btn\"><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<\/button><\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\"><div class=\"vc-rcard-label\">Adjusted Relubrication Interval<\/div><div class=\"vc-rcard-value\" id=\"vc-r-tfadj\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Base Interval (before adjustments)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-tfbase\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Temperature Factor<\/div><div class=\"vc-rcard-value\" id=\"vc-r-ftmp\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Mean Diameter dm<\/div><div class=\"vc-rcard-value\" id=\"vc-r-dm\">\u2014<\/div><\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\n<div class=\"vc-section vc-open\" id=\"vc-sec-theory\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"true\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Formulas<\/span><\/span><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><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner vc-theory\">\n        <h3>Base Relubrication Interval (SKF)<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n        <ul><li><strong>K<\/strong> \u2014 bearing type factor<\/li><li><strong>n<\/strong> \u2014 speed (RPM)<\/li><li><strong>d<sub>m<\/sub><\/strong> \u2014 mean bearing diameter (mm)<\/li><\/ul>\n        <h3>Adjustment Factors<\/h3>\n        <p>The base interval is multiplied by adjustment factors:<\/p>\n        <div class=\"vc-formula-box\" id=\"vc-katex-2\"><\/div>\n        <table class=\"vc-table\">\n            <thead><tr><th>Factor<\/th><th>Condition<\/th><th>Multiplier<\/th><\/tr><\/thead>\n            <tbody>\n                <tr><td>f<sub>T<\/sub> (Temperature)<\/td><td>\u226470\u00b0C<\/td><td>1.0<\/td><\/tr>\n                <tr><td><\/td><td>85\u00b0C<\/td><td>0.5<\/td><\/tr>\n                <tr><td><\/td><td>100\u00b0C<\/td><td>0.25<\/td><\/tr>\n                <tr><td><\/td><td>120\u00b0C<\/td><td>0.1<\/td><\/tr>\n                <tr><td>f<sub>C<\/sub> (Contamination)<\/td><td>Clean<\/td><td>1.0<\/td><\/tr>\n                <tr><td><\/td><td>Moderate dust<\/td><td>0.7<\/td><\/tr>\n                <tr><td><\/td><td>Heavy<\/td><td>0.4<\/td><\/tr>\n                <tr><td><\/td><td>Severe<\/td><td>0.2<\/td><\/tr>\n            <\/tbody>\n        <\/table>\n        <div class=\"vc-warning-box\"><p style=\"margin:0;font-size:14px;color:var(--vc-ink-secondary);\"><strong>\u26a0\ufe0f Note:<\/strong> This is a simplified estimation. For precise intervals, use the bearing manufacturer&#8217;s software (SKF Bearing Calculator, Schaeffler medias, etc.).<\/p><\/div>\n    <\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-related\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udd17<\/span><span class=\"vc-section-title\">Related Calculators<\/span><\/span><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><\/button>\n    <div class=\"vc-section-body\"><div class=\"vc-section-inner\"><div class=\"vc-related\"><a class=\"vc-related-link\" href=\"\/calculators\/bearing-grease-quantity\/\">Grease Quantity<\/a><a class=\"vc-related-link\" href=\"\/calculators\/bearing-speed-factor\/\">Speed Factor n\u00d7dm<\/a><a class=\"vc-related-link\" href=\"\/calculators\/bearing-modified-life-l10a\/\">Bearing Life L10a<\/a><\/div><\/div><\/div>\n<\/div>\n<div class=\"vc-section\" id=\"vc-sec-faq\"><button type=\"button\" class=\"vc-section-toggle\" aria-expanded=\"false\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\u2753<\/span><span class=\"vc-section-title\">Frequently Asked Questions<\/span><\/span><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><\/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<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional vibration analyzers for bearing condition monitoring.<\/div><a class=\"vc-promo-link\" href=\"https:\/\/vibromera.eu\/\" target=\"_blank\" rel=\"noopener\">Learn More<\/a><\/div>\n<footer class=\"vc-footer\"><p>\u00a9 2024\u20132026 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a><\/p><p style=\"font-size:12px;margin-top:4px;\">Calculator #052. Last updated: February 2026<\/p><div class=\"vc-footer-links\"><a href=\"\/calculators\/engineering-calculators\/\">All Calculators<\/a><a href=\"https:\/\/vibromera.eu\/contacts\/\">Contact<\/a><\/div><\/footer>\n<\/div>\n<script src=\"https:\/\/cdn.jsdelivr.net\/npm\/katex@0.16.11\/dist\/katex.min.js\"><\/script>\n<script>\n(function(){\n    'use strict';var SLUG='bearing-relubrication-interval';\n    function $(id){return document.getElementById(id)}\n    function fmt(n,d){if(isNaN(n)||!isFinite(n))return'\u2014';return n.toFixed(d===undefined?0:d).replace(\/(\\.\\d*?)0+$\/,'$1').replace(\/\\.$\/,'')}\n    function fmtInt(n){if(isNaN(n)||!isFinite(n))return'\u2014';return Math.round(n).toLocaleString('en-US');}\n\n    function calculate(){\n        var d=parseFloat($('vc-bore').value),D=parseFloat($('vc-od').value),n=parseFloat($('vc-speed').value);\n        var K=parseFloat($('vc-btype').value),T=parseFloat($('vc-temp').value),fC=parseFloat($('vc-contam').value);\n        if(!d||d<=0||!D||D<=d||!n||n<=0){$('vc-results').classList.remove('vc-visible');return;}\n        var dm=(d+D)\/2;\n        var sqrtDm=Math.sqrt(dm);\n        var tfBase=K*(14e6\/(n*sqrtDm)-4*dm);\n        if(tfBase<0)tfBase=0;\n        \/* Temperature factor: halve for each 15\u00b0C above 70\u00b0C *\/\n        var fT=1.0;\n        if(T>70)fT=Math.pow(0.5,(T-70)\/15);\n        var tfAdj=tfBase*fT*fC;\n        if(tfAdj<0)tfAdj=0;\n\n        $('vc-r-tfbase').innerHTML=fmtInt(tfBase)+' <span class=\"vc-rcard-unit\">hours<\/span>';\n        $('vc-r-tfadj').innerHTML=fmtInt(tfAdj)+' <span class=\"vc-rcard-unit\">hours<\/span>';\n        $('vc-r-ftmp').innerHTML='\u00d7'+fmt(fT,2)+' <span class=\"vc-rcard-unit\">('+Math.round(T)+'\u00b0C)<\/span>';\n        $('vc-r-dm').innerHTML=fmt(dm,1)+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-results').classList.add('vc-visible');\n        var u=new URL(window.location);u.searchParams.set('d',d);u.searchParams.set('D',D);u.searchParams.set('n',n);u.searchParams.set('T',T);history.replaceState(null,'',u.toString());\n        saveHistory({d:d,D:D,n:n,K:K,T:T,_summary:'dm='+fmt(dm,0)+' n='+n+' \u2192 tf='+fmtInt(tfAdj)+'h'});\n    }\n\n    document.querySelectorAll('.vc-preset-btn').forEach(function(btn){btn.addEventListener('click',function(e){e.preventDefault();$('vc-bore').value=this.getAttribute('data-d');$('vc-od').value=this.getAttribute('data-D');$('vc-speed').value=this.getAttribute('data-n');$('vc-btype').value=this.getAttribute('data-k');$('vc-temp').value=this.getAttribute('data-t');$('vc-contam').value=this.getAttribute('data-c');calculate();});});\n    $('vc-form').addEventListener('input',calculate);$('vc-form').addEventListener('change',calculate);\n\n    $('vc-copy-btn').addEventListener('click',function(){var text='Bearing Relubrication Interval\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nd='+$('vc-bore').value+' D='+$('vc-od').value+' mm, n='+$('vc-speed').value+' RPM\\nT='+$('vc-temp').value+'\u00b0C\\nAdjusted: '+$('vc-r-tfadj').textContent+'\\nBase: '+$('vc-r-tfbase').textContent+'\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nvibromera.eu';if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('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    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:'How is the relubrication interval calculated?',a:'<p>The SKF method uses: t<sub>f<\/sub> = K \u00d7 (14\u00d710\u2076\/(n\u00d7\u221ad<sub>m<\/sub>) \u2212 4\u00d7d<sub>m<\/sub>) as a base, then adjusts for temperature, contamination, and bearing type.<\/p>'},\n        {q:'What factors reduce the relubrication interval?',a:'<p>High temperature (halve for each 15\u00b0C above 70\u00b0C), heavy contamination, vertical shaft, vibration\/shock loads, and high humidity all reduce the interval.<\/p>'},\n        {q:'What is a typical relubrication interval?',a:'<p>For standard motors at 1500 RPM with DGBB, typical intervals are 10,000\u201320,000 hours. For high-speed applications, 500\u20132,000 hours. Very slow bearings may last 30,000+ hours.<\/p>'},\n        {q:'Does the SKF method apply to all grease types?',a:'<p>The base formula assumes standard lithium grease. Synthetic\/polyurea greases can multiply the interval by 2\u20134\u00d7. Calcium-based greases reduce it by 0.5\u00d7.<\/p>'},\n        {q:'Should I regrease sealed bearings?',a:'<p>Factory-sealed bearings (2RS, ZZ) are typically \"lubricated for life\" and should not be regreased. Replace the bearing when grease is depleted.<\/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)||$('vc-'+k);if(el)el.value=v;});}\n    function renderFormulas(){try{\n        katex.render('t_f = K \\\\cdot \\\\left(\\\\frac{14 \\\\times 10^6}{n \\\\cdot \\\\sqrt{d_m}} - 4 \\\\cdot d_m\\\\right) \\\\quad [\\\\text{hours}]',$('vc-katex-1'),{displayMode:true,throwOnError:false});\n        katex.render('t_{f,adj} = t_f \\\\times f_T \\\\times f_C',$('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>Libreng online na calculator para sa relubrication interval ng bearing grease gamit ang pamamaraan ng SKF. Ilagay ang uri ng bearing, bilis, bore diameter, temperatura, at kontaminasyon upang makuha ang dalas ng relubrication sa mga oras.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100026","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/calculator\/100026","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/calculator\/100026\/revisions"}],"predecessor-version":[{"id":100337,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/calculator\/100026\/revisions\/100337"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/media?parent=100026"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/categories?post=100026"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/tl\/wp-json\/wp\/v2\/tags?post=100026"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}