{"id":100208,"date":"2026-02-15T20:27:29","date_gmt":"2026-02-15T20:27:29","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100208"},"modified":"2026-03-05T15:44:42","modified_gmt":"2026-03-05T15:44:42","slug":"roller-chain-calculator","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/sw\/calculators\/roller-chain-calculator\/","title":{"rendered":"Kikokotoo cha Mnyororo wa Roller | Vipimo vya ISO 606 | Vibromera"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Roller Chain Calculator\",\"alternateName\":[\"ISO 606 Chain Calculator\",\"Chain Dimensions Calculator\"],\"description\":\"Free ISO 606 roller chain dimensions and capacity calculator. Lookup dimensions, breaking load, and working load.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/roller-chain-calculator\/\",\"applicationCategory\":\"Engineering Calculator\",\"operatingSystem\":\"Any (Web Browser)\",\"offers\":{\"@type\":\"Offer\",\"price\":\"0\",\"priceCurrency\":\"EUR\"},\"creator\":{\"@type\":\"Organization\",\"name\":\"Vibromera\",\"url\":\"https:\/\/vibromera.eu\/\"},\"datePublished\":\"2024-01-01\",\"dateModified\":\"2025-02-14\",\"inLanguage\":\"en\",\"isAccessibleForFree\":true,\"featureList\":[\"ISO 606 B-series chains\",\"Dimensions lookup\",\"Breaking load\",\"Working load\",\"Safety factor check\",\"Auto-calculation\"],\"keywords\":\"roller chain, ISO 606, chain dimensions, breaking load, working load\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"What is ISO 606?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ISO 606 is the international standard for short-pitch precision roller chains. It defines chain dimensions (pitch, roller diameter, width, plate thickness) and minimum breaking loads for B-series (European) and A-series (American) chains.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the safety factor for roller chains?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Typical safety factors: 7-10 for normal operation, 10-12 for shock loads. Safety factor = Breaking load \/ Working load. Higher factors are needed for corrosive environments, high speeds, or critical applications.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I read a chain designation like 12B-1?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"12B-1 means: 12 = pitch in 1\/16 inches (12\u00d71.5875mm = 19.05mm), B = European series, 1 = single strand. -2 would be duplex (two strands), -3 is triplex.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the difference between B-series and A-series chains?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"B-series (ISO 606 European) chains have different roller diameter, inner width, and plate dimensions than A-series (ANSI American) chains of the same pitch. B-series generally have larger rollers relative to pitch. Always specify B or A when ordering.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I calculate chain tensile load?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Effective tension F = P\/(v\u00d7\u03b7), where P is power in watts, v is chain speed in m\/s, and \u03b7 is efficiency (~0.97-0.98). The working load must not exceed the allowable tension (breaking load \/ safety factor).\"}}\n]}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@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\":\"Roller Chain Calculator\",\"item\":\"https:\/\/vibromera.eu\/calculators\/roller-chain-calculator\/\"}]}\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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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}\n@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}}\n<\/style>\n\n<div class=\"vc-calculator\" id=\"vc-roller-chain\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool #092<\/p>\n    <h1 class=\"vc-header-title\">Roller Chain Calculator<\/h1>\n    <p class=\"vc-header-subtitle\">ISO 606 roller chain dimensions and load capacity. Select chain designation and check tensile load against breaking and working load ratings.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">ISO 606<\/span><span class=\"vc-badge\">06B\u201348B<\/span><span class=\"vc-badge\">Dimensions &amp; Load<\/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-chain\">Chain Designation<\/label>\n                <select class=\"vc-select\" id=\"vc-chain\">\n                    <option value=\"06B\" data-p=\"9.525\" data-dr=\"6.35\" data-w=\"5.72\" data-bl=\"9.0\" data-mass=\"0.41\">06B \u2014 9.525 mm pitch<\/option>\n                    <option value=\"08B\" data-p=\"12.70\" data-dr=\"8.51\" data-w=\"7.75\" data-bl=\"18.0\" data-mass=\"0.69\" selected>08B \u2014 12.70 mm pitch<\/option>\n                    <option value=\"10B\" data-p=\"15.875\" data-dr=\"10.16\" data-w=\"9.65\" data-bl=\"22.2\" data-mass=\"0.93\">10B \u2014 15.875 mm pitch<\/option>\n                    <option value=\"12B\" data-p=\"19.05\" data-dr=\"12.07\" data-w=\"11.68\" data-bl=\"29.0\" data-mass=\"1.15\">12B \u2014 19.05 mm pitch<\/option>\n                    <option value=\"16B\" data-p=\"25.40\" data-dr=\"15.88\" data-w=\"17.02\" data-bl=\"60.0\" data-mass=\"2.71\">16B \u2014 25.40 mm pitch<\/option>\n                    <option value=\"20B\" data-p=\"31.75\" data-dr=\"19.05\" data-w=\"19.56\" data-bl=\"95.0\" data-mass=\"3.70\">20B \u2014 31.75 mm pitch<\/option>\n                    <option value=\"24B\" data-p=\"38.10\" data-dr=\"25.40\" data-w=\"25.40\" data-bl=\"160.0\" data-mass=\"6.20\">24B \u2014 38.10 mm pitch<\/option>\n                    <option value=\"28B\" data-p=\"44.45\" data-dr=\"27.94\" data-w=\"30.99\" data-bl=\"200.0\" data-mass=\"8.50\">28B \u2014 44.45 mm pitch<\/option>\n                    <option value=\"32B\" data-p=\"50.80\" data-dr=\"29.21\" data-w=\"30.99\" data-bl=\"250.0\" data-mass=\"10.25\">32B \u2014 50.80 mm pitch<\/option>\n                    <option value=\"40B\" data-p=\"63.50\" data-dr=\"39.37\" data-w=\"38.10\" data-bl=\"355.0\" data-mass=\"16.35\">40B \u2014 63.50 mm pitch<\/option>\n                    <option value=\"48B\" data-p=\"76.20\" data-dr=\"48.26\" data-w=\"45.72\" data-bl=\"530.0\" data-mass=\"25.00\">48B \u2014 76.20 mm pitch<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-strands\">Number of Strands<\/label>\n                <select class=\"vc-select\" id=\"vc-strands\">\n                    <option value=\"1\" selected>Simplex (1 strand)<\/option>\n                    <option value=\"2\">Duplex (2 strands)<\/option>\n                    <option value=\"3\">Triplex (3 strands)<\/option>\n                <\/select>\n            <\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-load\">Applied Tensile Load <span class=\"vc-label-hint\">(kN)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-load\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 5\" value=\"5\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-safety\">Required Safety Factor<\/label><input class=\"vc-input\" type=\"number\" id=\"vc-safety\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 8\" value=\"8\"><\/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-ch=\"08B\" data-str=\"1\" data-ld=\"3\" data-sf=\"8\">08B simplex, 3 kN<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-ch=\"12B\" data-str=\"1\" data-ld=\"8\" data-sf=\"8\">12B simplex, 8 kN<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-ch=\"16B\" data-str=\"2\" data-ld=\"20\" data-sf=\"7\">16B duplex, 20 kN<\/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\">Safety Factor Check<\/div><div class=\"vc-rcard-value\" id=\"vc-r-check\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Breaking Load (min)<\/div><div class=\"vc-rcard-value\" id=\"vc-r-bl\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Allowable Working Load<\/div><div class=\"vc-rcard-value\" id=\"vc-r-wl\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Pitch<\/div><div class=\"vc-rcard-value\" id=\"vc-r-pitch\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Roller Diameter<\/div><div class=\"vc-rcard-value\" id=\"vc-r-roller\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Inner Width \/ Mass<\/div><div class=\"vc-rcard-value\" id=\"vc-r-dims\">\u2014<\/div><\/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\"><span class=\"vc-section-toggle-text\"><span class=\"vc-section-icon\">\ud83d\udcd8<\/span><span class=\"vc-section-title\">Theory &amp; Reference<\/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>Safety Factor<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n        <h3>ISO 606 B-Series Chain Dimensions<\/h3>\n        <table class=\"vc-table\">\n            <thead><tr><th>Chain<\/th><th>Pitch (mm)<\/th><th>Roller \u2300 (mm)<\/th><th>Inner Width (mm)<\/th><th>Min Breaking Load (kN)<\/th><th>Mass (kg\/m)<\/th><\/tr><\/thead>\n            <tbody>\n                <tr><td>06B<\/td><td>9.525<\/td><td>6.35<\/td><td>5.72<\/td><td>9.0<\/td><td>0.41<\/td><\/tr>\n                <tr><td>08B<\/td><td>12.70<\/td><td>8.51<\/td><td>7.75<\/td><td>18.0<\/td><td>0.69<\/td><\/tr>\n                <tr><td>10B<\/td><td>15.875<\/td><td>10.16<\/td><td>9.65<\/td><td>22.2<\/td><td>0.93<\/td><\/tr>\n                <tr><td>12B<\/td><td>19.05<\/td><td>12.07<\/td><td>11.68<\/td><td>29.0<\/td><td>1.15<\/td><\/tr>\n                <tr><td>16B<\/td><td>25.40<\/td><td>15.88<\/td><td>17.02<\/td><td>60.0<\/td><td>2.71<\/td><\/tr>\n                <tr><td>20B<\/td><td>31.75<\/td><td>19.05<\/td><td>19.56<\/td><td>95.0<\/td><td>3.70<\/td><\/tr>\n                <tr><td>24B<\/td><td>38.10<\/td><td>25.40<\/td><td>25.40<\/td><td>160.0<\/td><td>6.20<\/td><\/tr>\n                <tr><td>28B<\/td><td>44.45<\/td><td>27.94<\/td><td>30.99<\/td><td>200.0<\/td><td>8.50<\/td><\/tr>\n                <tr><td>32B<\/td><td>50.80<\/td><td>29.21<\/td><td>30.99<\/td><td>250.0<\/td><td>10.25<\/td><\/tr>\n                <tr><td>40B<\/td><td>63.50<\/td><td>39.37<\/td><td>38.10<\/td><td>355.0<\/td><td>16.35<\/td><\/tr>\n                <tr><td>48B<\/td><td>76.20<\/td><td>48.26<\/td><td>45.72<\/td><td>530.0<\/td><td>25.00<\/td><\/tr>\n            <\/tbody>\n        <\/table>\n    <\/div><\/div>\n<\/div>\n\n<div class=\"vc-section\" id=\"vc-sec-related\">\n    <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\">\n        <a class=\"vc-related-link\" href=\"\/calculators\/chain-drive-calculator\/\">Chain Drive Calculator<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/belt-drive-calculator\/\">Belt Drive Calculator<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/coupling-torque-calculator\/\">Coupling Torque Calculator<\/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\"><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\n<div class=\"vc-promo\"><div class=\"vc-promo-text\"><strong>Vibromera \u2014 Portable Balancing &amp; Vibration Analysis<\/strong><br>Professional field balancing instruments. 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\u20132025 <a href=\"https:\/\/vibromera.eu\/\">Vibromera<\/a> \u2014 Engineering Calculators<\/p><p style=\"font-size:12px;margin-top:4px;\">Based on ISO 606. Last updated: February 2025<\/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    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    var strandFactors={1:1.0,2:1.7,3:2.5};\n\n    function calculate(){\n        var sel=$('vc-chain');var opt=sel.options[sel.selectedIndex];\n        var pitch=parseFloat(opt.getAttribute('data-p'));\n        var dr=parseFloat(opt.getAttribute('data-dr'));\n        var w=parseFloat(opt.getAttribute('data-w'));\n        var blSingle=parseFloat(opt.getAttribute('data-bl'));\n        var mass=parseFloat(opt.getAttribute('data-mass'));\n        var strands=parseInt($('vc-strands').value);\n        var load=parseFloat($('vc-load').value)||0;\n        var reqSF=parseFloat($('vc-safety').value)||7;\n\n        var sf=strandFactors[strands]||1;\n        var bl=blSingle*sf;\n        var wl=bl\/reqSF;\n        var actualSF=load>0?bl\/load:Infinity;\n        var ok=actualSF>=reqSF;\n\n        $('vc-r-check').innerHTML=(load>0?'<span style=\"color:var(--vc-'+(ok?'green':'red')+')\">SF = '+fmt(actualSF,1)+' '+(ok?'\u2713 OK':'\u26a0 INSUFFICIENT')+'<\/span>':'Enter load to check');\n        $('vc-r-bl').innerHTML=fmt(bl,1)+' <span class=\"vc-rcard-unit\">kN<\/span> <span class=\"vc-rcard-unit\">('+strands+'\u00d7'+opt.value+')<\/span>';\n        $('vc-r-wl').innerHTML=fmt(wl,1)+' <span class=\"vc-rcard-unit\">kN<\/span> <span class=\"vc-rcard-unit\">(SF='+reqSF+')<\/span>';\n        $('vc-r-pitch').innerHTML=fmt(pitch,3)+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-r-roller').innerHTML=fmt(dr,2)+' <span class=\"vc-rcard-unit\">mm<\/span>';\n        $('vc-r-dims').innerHTML=fmt(w,2)+' <span class=\"vc-rcard-unit\">mm<\/span> \/ '+fmt(mass*sf,2)+' <span class=\"vc-rcard-unit\">kg\/m<\/span>';\n\n        $('vc-results').classList.add('vc-visible');\n    }\n\n    document.querySelectorAll('.vc-preset-btn').forEach(function(btn){\n        btn.addEventListener('click',function(e){e.preventDefault();$('vc-chain').value=this.getAttribute('data-ch');$('vc-strands').value=this.getAttribute('data-str');$('vc-load').value=this.getAttribute('data-ld');$('vc-safety').value=this.getAttribute('data-sf');calculate()});\n    });\n\n    $('vc-form').addEventListener('input',calculate);$('vc-form').addEventListener('change',calculate);\n\n    $('vc-copy-btn').addEventListener('click',function(){\n        var text='Roller Chain Calculation (ISO 606)\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nChain: '+$('vc-chain').value+'-'+$('vc-strands').value+'\\nBreaking Load: '+$('vc-r-bl').textContent+'\\nAllowable: '+$('vc-r-wl').textContent+'\\nCheck: '+$('vc-r-check').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\/calculators\/roller-chain-calculator\/';\n        if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('vc-copy-btn');b.classList.add('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><polyline points=\"20 6 9 17 4 12\"\/><\/svg> Copied!';setTimeout(function(){b.classList.remove('vc-copied');b.innerHTML='<svg width=\"14\" height=\"14\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><rect x=\"9\" y=\"9\" width=\"13\" height=\"13\" rx=\"2\"\/><path d=\"M5 15H4a2 2 0 01-2-2V4a2 2 0 012-2h9a2 2 0 012 2v1\"\/><\/svg> Copy'},2000)})}\n    });\n\n    document.querySelectorAll('.vc-section-toggle').forEach(function(btn){btn.addEventListener('click',function(){var s=this.closest('.vc-section');s.classList.toggle('vc-open');this.setAttribute('aria-expanded',s.classList.contains('vc-open'))})});\n\n    var faqData=[\n        {q:'What is ISO 606?',a:'<p>ISO 606 is the international standard for short-pitch precision roller chains. It defines dimensions, minimum breaking loads, and testing requirements for B-series (European) and A-series (American) chains.<\/p>'},\n        {q:'What is the safety factor for roller chains?',a:'<p>Typical: 7\u201310 for normal operation, 10\u201312 for shock loads. Safety factor = Breaking load \/ Working load.<\/p>'},\n        {q:'How do I read a chain designation like 12B-1?',a:'<p>12 = pitch in 1\/16 inches (19.05mm), B = European series, 1 = single strand. -2 = duplex, -3 = triplex.<\/p>'},\n        {q:'What is the difference between B-series and A-series?',a:'<p>B-series (European) and A-series (American) have different roller diameter and width for the same pitch. Always specify B or A when ordering.<\/p>'},\n        {q:'How do I calculate chain tensile load?',a:'<p>Effective tension F = P\/(v\u00d7\u03b7), where P is power in watts, v is chain speed in m\/s, \u03b7 is efficiency (~0.97\u20130.98).<\/p>'}\n    ];\n    var fl=$('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 renderFormulas(){try{katex.render('SF = \\\\frac{F_{break}}{F_{working}} \\\\geq SF_{required}',$('vc-katex-1'),{displayMode:true,throwOnError:false})}catch(e){}}\n\n    function init(){renderFormulas();calculate()}\n    if(document.readyState==='loading'){document.addEventListener('DOMContentLoaded',init)}else{init()}\n})();\n<\/script>\n","protected":false},"excerpt":{"rendered":"<p>Kikokotoo cha bure cha mtandaoni cha vipimo na uwezo wa mnyororo wa roller kulingana na ISO 606. Tafuta vipimo vya mnyororo, mzigo wa kuvunjika, na mzigo wa kufanya kazi kwa mnyororo wa mfululizo 06B hadi 48B.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[],"tags":[],"class_list":["post-100208","calculator","type-calculator","status-publish","hentry"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100208","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator"}],"about":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/types\/calculator"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100208\/revisions"}],"predecessor-version":[{"id":100782,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/calculator\/100208\/revisions\/100782"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/media?parent=100208"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/categories?post=100208"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/sw\/wp-json\/wp\/v2\/tags?post=100208"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}