{"id":100031,"date":"2026-02-15T20:07:22","date_gmt":"2026-02-15T20:07:22","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100031"},"modified":"2026-02-15T20:07:22","modified_gmt":"2026-02-15T20:07:22","slug":"bearing-tolerance-class","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/nb\/calculators\/bearing-tolerance-class\/","title":{"rendered":"Oppslag av lagertoleranseklasse | ISO 492 | P0 P6 P5 P4 P2 | Gratis nettverkt\u00f8y"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Bearing Tolerance Class Lookup\",\"alternateName\":[\"ISO 492 Tolerance Calculator\",\"ABEC Tolerance Lookup\",\"Bearing Precision Class\"],\"description\":\"Free online ISO 492 bearing tolerance lookup tool. Shows bore, OD, and width tolerances for classes P0, P6, P5, P4, P2 based on bearing diameter.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/bearing-tolerance-class\/\",\"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\":[\"ISO 492 tolerance classes P0-P2\",\"Bore diameter lookup\",\"OD and width tolerances\",\"ABEC equivalents\",\"Auto-calculation\"],\"keywords\":\"ISO 492, bearing tolerance, P0, P6, P5, P4, P2, ABEC\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What are bearing tolerance classes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Bearing tolerance classes define the dimensional and running accuracy of rolling bearings per ISO 492. Classes range from P0 (normal, least precise) to P2 (most precise). Higher precision means tighter tolerances on bore, OD, width, and runout.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the relationship between ISO and ABEC classes?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO P0 = ABEC 1, ISO P6 = ABEC 3, ISO P5 = ABEC 5, ISO P4 = ABEC 7, ISO P2 = ABEC 9. The ABEC system (Annular Bearing Engineering Committee) is used primarily in North America.\"}},\n{\"@type\":\"Question\",\"name\":\"When should I use P6 or higher precision?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"P6 is used for machine tool spindles (general), electric motors requiring low vibration, and precision gearboxes. P5 is for high-speed spindles. P4 and P2 are for ultra-precision applications like grinding spindles and gyroscopes.\"}},\n{\"@type\":\"Question\",\"name\":\"Does tolerance class affect bearing life?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Tolerance class does not directly affect the rated life L10. However, higher precision bearings run smoother with less vibration, which can improve actual service life by reducing dynamic loads and improving lubrication conditions.\"}},\n{\"@type\":\"Question\",\"name\":\"Are tolerance values the same for all bearing types?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO 492 covers radial bearings (ball and roller). Thrust bearings follow ISO 199. The tolerance values depend on the bearing bore diameter range and the selected class. Values shown here are for standard radial bearings.\"}}\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 Tolerance Class\",\"item\":\"https:\/\/vibromera.eu\/calculators\/bearing-tolerance-class\/\"}\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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class=\"vc-header-subtitle\">Look up bore, OD, and width tolerances per ISO 492 for tolerance classes P0 through P2 (ABEC 1\u20139). Enter bore diameter and select class.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">ISO 492<\/span><span class=\"vc-badge\">P0\u2013P2 \/ ABEC 1\u20139<\/span><span class=\"vc-badge\">\u03bcm Tolerances<\/span><\/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=\"2.5\" max=\"2500\" placeholder=\"e.g. 50\" value=\"50\">\n            <\/div>\n            <div class=\"vc-field\">\n                <label class=\"vc-label\" for=\"vc-class\">Tolerance Class<\/label>\n                <select class=\"vc-select\" id=\"vc-class\">\n                    <option value=\"P0\" selected>P0 (Normal \/ ABEC 1)<\/option>\n                    <option value=\"P6\">P6 (ABEC 3)<\/option>\n                    <option value=\"P5\">P5 (ABEC 5)<\/option>\n                    <option value=\"P4\">P4 (ABEC 7)<\/option>\n                    <option value=\"P2\">P2 (ABEC 9)<\/option>\n                <\/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-bore=\"25\" data-cls=\"P0\">d=25mm P0<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-bore=\"50\" data-cls=\"P6\">d=50mm P6<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-bore=\"80\" data-cls=\"P5\">d=80mm P5<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-bore=\"30\" data-cls=\"P4\">d=30mm P4<\/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\">Tolerances<\/h2>\n            <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>\n        <\/div>\n        <div class=\"vc-result-grid\">\n            <div class=\"vc-rcard vc-rcard-primary\">\n                <div class=\"vc-rcard-label\">Bore Tolerance \u0394dmp<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-bore\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">OD Tolerance \u0394Dmp<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-od\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Bore Variation Vdp<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-vdp\">\u2014<\/div>\n            <\/div>\n            <div class=\"vc-rcard\">\n                <div class=\"vc-rcard-label\">Class &amp; ABEC Equivalent<\/div>\n                <div class=\"vc-rcard-value\" id=\"vc-r-equiv\">\u2014<\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n<\/div>\n\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; Reference<\/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>ISO \/ ABEC Equivalence<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>ISO Class<\/th><th>ABEC<\/th><th>Typical Application<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>P0 (Normal)<\/td><td>ABEC 1<\/td><td>General machinery, fans, pumps, motors<\/td><\/tr>\n                    <tr><td>P6<\/td><td>ABEC 3<\/td><td>Machine tools (general), electric motors (low vibration)<\/td><\/tr>\n                    <tr><td>P5<\/td><td>ABEC 5<\/td><td>High-speed spindles, precision gearboxes<\/td><\/tr>\n                    <tr><td>P4<\/td><td>ABEC 7<\/td><td>Grinding spindles, high-precision instruments<\/td><\/tr>\n                    <tr><td>P2<\/td><td>ABEC 9<\/td><td>Ultra-precision spindles, gyroscopes<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n            <h3>Bore Tolerance \u0394dmp (\u03bcm) \u2014 Selected Ranges<\/h3>\n            <table class=\"vc-table\">\n                <thead><tr><th>Bore Range (mm)<\/th><th>P0<\/th><th>P6<\/th><th>P5<\/th><th>P4<\/th><th>P2<\/th><\/tr><\/thead>\n                <tbody>\n                    <tr><td>10\u201318<\/td><td>0 \/ \u22128<\/td><td>0 \/ \u22127<\/td><td>0 \/ \u22125<\/td><td>0 \/ \u22124<\/td><td>0 \/ \u22122.5<\/td><\/tr>\n                    <tr><td>18\u201330<\/td><td>0 \/ \u221210<\/td><td>0 \/ \u22128<\/td><td>0 \/ \u22126<\/td><td>0 \/ \u22125<\/td><td>0 \/ \u22122.5<\/td><\/tr>\n                    <tr><td>30\u201350<\/td><td>0 \/ \u221212<\/td><td>0 \/ \u221210<\/td><td>0 \/ \u22128<\/td><td>0 \/ \u22126<\/td><td>0 \/ \u22122.5<\/td><\/tr>\n                    <tr><td>50\u201380<\/td><td>0 \/ \u221215<\/td><td>0 \/ \u221212<\/td><td>0 \/ \u22129<\/td><td>0 \/ \u22127<\/td><td>0 \/ \u22124<\/td><\/tr>\n                    <tr><td>80\u2013120<\/td><td>0 \/ \u221220<\/td><td>0 \/ \u221215<\/td><td>0 \/ \u221210<\/td><td>0 \/ \u22128<\/td><td>0 \/ \u22125<\/td><\/tr>\n                    <tr><td>120\u2013180<\/td><td>0 \/ \u221225<\/td><td>0 \/ \u221218<\/td><td>0 \/ \u221213<\/td><td>0 \/ \u221210<\/td><td>0 \/ \u22127<\/td><\/tr>\n                <\/tbody>\n            <\/table>\n            <div class=\"vc-info-box\"><p><strong>\u2139\ufe0f Note:<\/strong> Tolerances are always negative (below nominal). The bearing bore is manufactured at or slightly below the nominal dimension.<\/p><\/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-fit-tolerance\/\">Bearing Fit Selection<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-press-fit-force\/\">Press-Fit Force<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/bearing-removal-force\/\">Removal Force<\/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\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional vibration analyzers. Used in 50+ countries.<\/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> \u2014 Engineering Calculators<\/p><p style=\"font-size:12px;margin-top:4px;\">Based on ISO 492. Calculator #049. 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\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-tolerance-class';\n    function $(id){return document.getElementById(id)}\n    \/* Tolerance data: [maxBore, {P0:[hi,lo],P6:[hi,lo],P5:[hi,lo],P4:[hi,lo],P2:[hi,lo]}, Vdp:{...}, OD_approx:{...}] *\/\n    var BORE_RANGES=[\n        {max:10,P0:[0,-8],P6:[0,-7],P5:[0,-5],P4:[0,-4],P2:[0,-2.5],Vdp:{P0:6,P6:5,P5:4,P4:3,P2:1.5},OD:{P0:[0,-8],P6:[0,-7],P5:[0,-5],P4:[0,-4],P2:[0,-2.5]}},\n        {max:18,P0:[0,-8],P6:[0,-7],P5:[0,-5],P4:[0,-4],P2:[0,-2.5],Vdp:{P0:6,P6:5,P5:4,P4:3,P2:1.5},OD:{P0:[0,-8],P6:[0,-7],P5:[0,-5],P4:[0,-4],P2:[0,-2.5]}},\n        {max:30,P0:[0,-10],P6:[0,-8],P5:[0,-6],P4:[0,-5],P2:[0,-2.5],Vdp:{P0:8,P6:6,P5:5,P4:4,P2:2},OD:{P0:[0,-9],P6:[0,-8],P5:[0,-6],P4:[0,-5],P2:[0,-3]}},\n        {max:50,P0:[0,-12],P6:[0,-10],P5:[0,-8],P4:[0,-6],P2:[0,-2.5],Vdp:{P0:9,P6:8,P5:6,P4:5,P2:2.5},OD:{P0:[0,-11],P6:[0,-9],P5:[0,-7],P4:[0,-6],P2:[0,-4]}},\n        {max:80,P0:[0,-15],P6:[0,-12],P5:[0,-9],P4:[0,-7],P2:[0,-4],Vdp:{P0:11,P6:9,P5:7,P4:5,P2:3},OD:{P0:[0,-13],P6:[0,-11],P5:[0,-9],P4:[0,-7],P2:[0,-5]}},\n        {max:120,P0:[0,-20],P6:[0,-15],P5:[0,-10],P4:[0,-8],P2:[0,-5],Vdp:{P0:15,P6:11,P5:8,P4:6,P2:4},OD:{P0:[0,-15],P6:[0,-13],P5:[0,-10],P4:[0,-8],P2:[0,-6]}},\n        {max:180,P0:[0,-25],P6:[0,-18],P5:[0,-13],P4:[0,-10],P2:[0,-7],Vdp:{P0:19,P6:14,P5:10,P4:8,P2:5},OD:{P0:[0,-18],P6:[0,-15],P5:[0,-11],P4:[0,-9],P2:[0,-7]}},\n        {max:250,P0:[0,-30],P6:[0,-22],P5:[0,-15],P4:[0,-12],P2:[0,-8],Vdp:{P0:23,P6:17,P5:12,P4:10,P2:6},OD:{P0:[0,-20],P6:[0,-18],P5:[0,-13],P4:[0,-11],P2:[0,-8]}},\n        {max:315,P0:[0,-35],P6:[0,-25],P5:[0,-18],P4:[0,-15],P2:[0,-10],Vdp:{P0:26,P6:19,P5:14,P4:11,P2:7},OD:{P0:[0,-25],P6:[0,-20],P5:[0,-15],P4:[0,-13],P2:[0,-10]}},\n        {max:400,P0:[0,-40],P6:[0,-30],P5:[0,-23],P4:[0,-18],P2:[0,-12],Vdp:{P0:30,P6:23,P5:17,P4:14,P2:9},OD:{P0:[0,-28],P6:[0,-23],P5:[0,-18],P4:[0,-15],P2:[0,-11]}}\n    ];\n    var ABEC_MAP={P0:'ABEC 1',P6:'ABEC 3',P5:'ABEC 5',P4:'ABEC 7',P2:'ABEC 9'};\n\n    function findRange(d){for(var i=0;i<BORE_RANGES.length;i++){if(d<=BORE_RANGES[i].max)return BORE_RANGES[i];}return BORE_RANGES[BORE_RANGES.length-1];}\n\n    function calculate(){\n        var d=parseFloat($('vc-bore').value);\n        var cls=$('vc-class').value;\n        if(!d||d<2.5){$('vc-results').classList.remove('vc-visible');return;}\n        var r=findRange(d);\n        var tol=r[cls];\n        var od=r.OD[cls];\n        var vdp=r.Vdp[cls];\n        $('vc-r-bore').innerHTML=tol[0]+' \/ '+tol[1]+' <span class=\"vc-rcard-unit\">\u03bcm<\/span>';\n        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text='Bearing Tolerance Class\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nBore: '+$('vc-bore').value+' mm\\nClass: '+$('vc-class').value+' ('+ABEC_MAP[$('vc-class').value]+')\\nBore tol: '+$('vc-r-bore').textContent+'\\nOD tol: '+$('vc-r-od').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:'What are bearing tolerance classes?',a:'<p>Bearing tolerance classes define the dimensional and running accuracy per ISO 492. Classes range from P0 (normal) to P2 (most precise). Higher precision means tighter tolerances on bore, OD, width, and runout.<\/p>'},\n        {q:'What is the relationship between ISO and ABEC classes?',a:'<p>ISO P0 = ABEC 1, P6 = ABEC 3, P5 = ABEC 5, P4 = ABEC 7, P2 = ABEC 9. The ABEC system is used primarily in North America.<\/p>'},\n        {q:'When should I use P6 or higher precision?',a:'<p>P6 is for machine tool spindles and low-vibration motors. P5 is for high-speed spindles. P4 and P2 are for ultra-precision applications like grinding spindles and gyroscopes.<\/p>'},\n        {q:'Does tolerance class affect bearing life?',a:'<p>Not directly. However, higher precision bearings run smoother, which can improve actual service life by reducing dynamic loads and improving lubrication conditions.<\/p>'},\n        {q:'Are tolerance values the same for all bearing types?',a:'<p>ISO 492 covers radial bearings (ball and roller). Thrust bearings follow ISO 199. Values depend on the bore diameter range and the selected class.<\/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 init(){loadParams();calculate();}\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init);}else{init();}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Gratis online oppslag av ISO 492-lagertoleranse. Skriv inn borediameter og toleranseklasse (P0, P6, P5, P4, P2) for \u00e5 se borediameter, ytterdiameter og breddetoleranser i mikrometer.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100031","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100031","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100031\/revisions"}],"predecessor-version":[{"id":100342,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/calculator\/100031\/revisions\/100342"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/media?parent=100031"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/categories?post=100031"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/nb\/wp-json\/wp\/v2\/tags?post=100031"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}