{"id":100056,"date":"2026-02-15T20:09:39","date_gmt":"2026-02-15T20:09:39","guid":{"rendered":"https:\/\/vibromera.eu\/?post_type=calculator&#038;p=100056"},"modified":"2026-02-15T20:09:39","modified_gmt":"2026-02-15T20:09:39","slug":"chain-drive-calculator","status":"publish","type":"calculator","link":"https:\/\/vibromera.eu\/pt_br\/calculators\/chain-drive-calculator\/","title":{"rendered":"Calculadora de transmiss\u00e3o por corrente | Sele\u00e7\u00e3o de corrente de rolos | Ferramenta online gratuita"},"content":{"rendered":"\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"WebApplication\",\"name\":\"Chain Drive Calculator\",\"alternateName\":[\"Roller Chain Selection Calculator\",\"Chain Pitch Calculator\"],\"description\":\"Free online roller chain drive selection calculator. Select chain pitch from power rating tables.\",\"url\":\"https:\/\/vibromera.eu\/calculators\/chain-drive-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\":[\"Chain pitch selection\",\"Power rating lookup\",\"Service factor\",\"Chain speed calculation\",\"Sprocket ratio\",\"Auto-calculation\"],\"keywords\":\"roller chain, chain drive, chain pitch, sprocket, ISO 606\"}\n<\/script>\n\n<script type=\"application\/ld+json\">\n{\"@context\":\"https:\/\/schema.org\",\"@type\":\"FAQPage\",\"mainEntity\":[\n{\"@type\":\"Question\",\"name\":\"How do I select the right roller chain pitch?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Multiply the transmitted power by the service factor to get design power. Look up the chain pitch in power rating tables based on the small sprocket speed. Common pitches: 08B (12.7mm) for light duty, 10B (15.875mm) for medium, 12B-16B for heavy loads.\"}},\n{\"@type\":\"Question\",\"name\":\"What service factors apply to chain drives?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Service factors: 1.0 for uniform load\/smooth start, 1.3 for moderate shock, 1.5 for heavy shock, 1.7 for frequent starts\/reversing. Multiply by 1.25 for 16+ hours\/day operation.\"}},\n{\"@type\":\"Question\",\"name\":\"How do I calculate chain length in links?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Chain length L = 2C\/p + (z1+z2)\/2 + [(z2-z1)\/(2\u03c0)]\u00b2\u00d7p\/C, where C is center distance, p is pitch, z1 and z2 are sprocket teeth. Round to the nearest even number of links.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the maximum chain speed?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Maximum chain speed depends on chain quality and lubrication. Typical limits: 08B up to 12 m\/s, 10B up to 15 m\/s, 12B up to 18 m\/s. Higher speeds require oil bath or pressure lubrication.\"}},\n{\"@type\":\"Question\",\"name\":\"What is the minimum number of teeth for a sprocket?\",\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"Minimum recommended: 17 teeth for smooth operation, 21 teeth for high speed. Fewer teeth cause increased wear, noise, and chordal action. Standard minimum is 9 teeth but not recommended for power transmission.\"}}\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\":\"Chain Drive Calculator\",\"item\":\"https:\/\/vibromera.eu\/calculators\/chain-drive-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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.vc-faq-a{max-height:1200px}.vc-faq-a-inner{padding:14px 16px;border-top:1px solid var(--vc-border-light);font-size:14px;color:var(--vc-ink-secondary)}.vc-faq-a-inner p{margin:0 0 8px}.vc-faq-a-inner p:last-child{margin-bottom:0}\n.vc-related{display:flex;flex-wrap:wrap;gap:10px;margin-top:16px}.vc-related-link{display:inline-block;padding:8px 16px;font-family:var(--vc-font);font-size:13px;font-weight:600;background:var(--vc-surface-alt);color:var(--vc-ink-secondary);border:1px solid var(--vc-border);border-radius:var(--vc-radius);text-decoration:none;transition:all .15s}.vc-related-link:hover{border-color:var(--vc-accent);color:var(--vc-accent);background:var(--vc-accent-light)}\n.vc-promo{margin-top:24px;padding:20px;background:linear-gradient(135deg,var(--vc-accent-light),var(--vc-surface));border:1px solid var(--vc-border);border-radius:var(--vc-radius-lg);display:flex;align-items:center;gap:16px}.vc-promo-text{flex:1;font-size:14px;color:var(--vc-ink-secondary)}.vc-promo-text strong{color:var(--vc-ink)}.vc-promo-link{padding:8px 20px;font-size:13px;font-weight:700;color:#fff;background:var(--vc-accent);border-radius:var(--vc-radius);text-decoration:none;white-space:nowrap;transition:background .15s}.vc-promo-link:hover{background:var(--vc-accent-hover)}\n.vc-footer{text-align:center;padding:32px 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-chain-drive\">\n<header class=\"vc-header\">\n    <p class=\"vc-header-eyebrow\">Free Engineering Tool #091<\/p>\n    <h1 class=\"vc-header-title\">Chain Drive Calculator<\/h1>\n    <p class=\"vc-header-subtitle\">Select roller chain pitch from power rating tables. Enter power, driver\/driven speed, and service factor. Calculates chain speed, sprocket sizes, and chain length.<\/p>\n    <div class=\"vc-badges\"><span class=\"vc-badge\">ISO 606<\/span><span class=\"vc-badge\">Roller Chain<\/span><span class=\"vc-badge\">08B\u201324B<\/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-power\">Power <span class=\"vc-label-hint\">(kW)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-power\" inputmode=\"decimal\" step=\"any\" min=\"0.1\" placeholder=\"e.g. 15\" value=\"15\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-n1\">Driver Speed <span class=\"vc-label-hint\">(RPM)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-n1\" inputmode=\"decimal\" step=\"any\" min=\"1\" placeholder=\"e.g. 1000\" value=\"1000\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-z1\">Driver Sprocket Teeth <span class=\"vc-label-hint\">(z\u2081)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-z1\" inputmode=\"decimal\" step=\"1\" min=\"9\" placeholder=\"e.g. 19\" value=\"19\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-z2\">Driven Sprocket Teeth <span class=\"vc-label-hint\">(z\u2082)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-z2\" inputmode=\"decimal\" step=\"1\" min=\"9\" placeholder=\"e.g. 57\" value=\"57\"><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-sf\">Service Factor<\/label><select class=\"vc-select\" id=\"vc-sf\"><option value=\"1.0\">1.0 \u2014 Uniform, smooth start<\/option><option value=\"1.3\" selected>1.3 \u2014 Moderate shock<\/option><option value=\"1.5\">1.5 \u2014 Heavy shock<\/option><option value=\"1.7\">1.7 \u2014 Frequent starts\/reversals<\/option><\/select><\/div>\n            <div class=\"vc-field\"><label class=\"vc-label\" for=\"vc-center\">Center Distance <span class=\"vc-label-hint\">(mm, optional)<\/span><\/label><input class=\"vc-input\" type=\"number\" id=\"vc-center\" inputmode=\"decimal\" step=\"any\" min=\"0\" placeholder=\"e.g. 600\" value=\"600\"><\/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-p=\"5\" data-n=\"1000\" data-z1=\"17\" data-z2=\"51\" data-sf=\"1.0\" data-c=\"400\">Light Conveyor 5 kW<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-p=\"15\" data-n=\"1000\" data-z1=\"19\" data-z2=\"57\" data-sf=\"1.3\" data-c=\"600\">Mixer 15 kW<\/button>\n            <button type=\"button\" class=\"vc-preset-btn\" data-p=\"37\" data-n=\"750\" data-z1=\"21\" data-z2=\"63\" data-sf=\"1.5\" data-c=\"800\">Crusher 37 kW<\/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\">Recommended Chain<\/div><div class=\"vc-rcard-value\" id=\"vc-r-chain\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Design Power<\/div><div class=\"vc-rcard-value\" id=\"vc-r-pd\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Chain Speed<\/div><div class=\"vc-rcard-value\" id=\"vc-r-speed\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Speed Ratio<\/div><div class=\"vc-rcard-value\" id=\"vc-r-ratio\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Chain Length<\/div><div class=\"vc-rcard-value\" id=\"vc-r-length\">\u2014<\/div><\/div>\n            <div class=\"vc-rcard\"><div class=\"vc-rcard-label\">Output Speed<\/div><div class=\"vc-rcard-value\" id=\"vc-r-n2\">\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; 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>Design Power<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-1\"><\/div>\n        <h3>Chain Length in Links<\/h3>\n        <div class=\"vc-formula-box\" id=\"vc-katex-2\"><\/div>\n        <h3>Chain Power Rating Table (single strand, 19T sprocket)<\/h3>\n        <table class=\"vc-table\">\n            <thead><tr><th>Chain<\/th><th>Pitch<\/th><th>@500 RPM<\/th><th>@1000 RPM<\/th><th>@1500 RPM<\/th><\/tr><\/thead>\n            <tbody>\n                <tr><td>06B-1<\/td><td>9.525 mm<\/td><td>1.1 kW<\/td><td>1.8 kW<\/td><td>2.3 kW<\/td><\/tr>\n                <tr><td>08B-1<\/td><td>12.70 mm<\/td><td>2.8 kW<\/td><td>4.7 kW<\/td><td>6.0 kW<\/td><\/tr>\n                <tr><td>10B-1<\/td><td>15.875 mm<\/td><td>5.3 kW<\/td><td>9.0 kW<\/td><td>11.5 kW<\/td><\/tr>\n                <tr><td>12B-1<\/td><td>19.05 mm<\/td><td>8.9 kW<\/td><td>15 kW<\/td><td>19 kW<\/td><\/tr>\n                <tr><td>16B-1<\/td><td>25.40 mm<\/td><td>19 kW<\/td><td>32 kW<\/td><td>38 kW<\/td><\/tr>\n                <tr><td>20B-1<\/td><td>31.75 mm<\/td><td>33 kW<\/td><td>52 kW<\/td><td>60 kW<\/td><\/tr>\n                <tr><td>24B-1<\/td><td>38.10 mm<\/td><td>55 kW<\/td><td>85 kW<\/td><td>95 kW<\/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> Power ratings are approximate and depend on lubrication type. For duplex chains, multiply by 1.7; for triplex by 2.5. Always verify with manufacturer data.<\/p><\/div>\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\/roller-chain-calculator\/\">Roller Chain Dimensions<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/belt-drive-calculator\/\">Belt Drive Calculator<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/gear-ratio-calculator\/\">Gear Ratio Calculator<\/a>\n        <a class=\"vc-related-link\" href=\"\/calculators\/drive-efficiency-calculator\/\">Drive Efficiency 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    \/\/ Chain power ratings at 1000 RPM, 19T, single strand (kW)\n    var chains=[\n        {name:'06B-1',pitch:9.525,pwr:1.8},\n        {name:'08B-1',pitch:12.70,pwr:4.7},\n        {name:'10B-1',pitch:15.875,pwr:9.0},\n        {name:'12B-1',pitch:19.05,pwr:15},\n        {name:'16B-1',pitch:25.40,pwr:32},\n        {name:'20B-1',pitch:31.75,pwr:52},\n        {name:'24B-1',pitch:38.10,pwr:85}\n    ];\n\n    function calculate(){\n        var P=parseFloat($('vc-power').value);\n        var n1=parseFloat($('vc-n1').value);\n        var z1=parseInt($('vc-z1').value);\n        var z2=parseInt($('vc-z2').value);\n        var sf=parseFloat($('vc-sf').value);\n        var C=parseFloat($('vc-center').value)||0;\n        if(!P||P<=0||!n1||n1<=0||!z1||z1<9||!z2||z2<9){$('vc-results').classList.remove('vc-visible');return}\n\n        var Pd=P*sf;\n        var ratio=z2\/z1;\n        var n2=n1\/ratio;\n\n        \/\/ Speed correction: power rating scales ~linearly with speed\n        var speedFactor=n1\/1000;\n        \/\/ Teeth correction (reference 19T)\n        var teethFactor=Math.pow(z1\/19,1.08);\n        \n        \/\/ Select chain\n        var selected=chains[chains.length-1];\n        for(var i=0;i<chains.length;i++){\n            var rated=chains[i].pwr*speedFactor*teethFactor;\n            if(rated>=Pd){selected=chains[i];break}\n        }\n\n        var pitch=selected.pitch;\n        \/\/ Chain speed\n        var d1=pitch\/Math.sin(Math.PI\/z1);\n        var chainSpeed=z1*pitch*n1\/60000; \/\/ m\/s\n\n        \/\/ Chain length in links (if C given)\n        var lengthLinks=0;\n        if(C>0){\n            var Lp=2*C\/pitch+(z1+z2)\/2+Math.pow((z2-z1)\/(2*Math.PI),2)*pitch\/C;\n            lengthLinks=Math.ceil(Lp\/2)*2; \/\/ round up to even\n        }\n\n        $('vc-r-chain').innerHTML=selected.name+' <span class=\"vc-rcard-unit\">(pitch '+selected.pitch+' mm)<\/span>';\n        $('vc-r-pd').innerHTML=fmt(Pd,1)+' <span class=\"vc-rcard-unit\">kW<\/span>';\n        $('vc-r-speed').innerHTML=fmt(chainSpeed,2)+' <span class=\"vc-rcard-unit\">m\/s<\/span>';\n        $('vc-r-ratio').innerHTML=fmt(ratio,2)+' <span class=\"vc-rcard-unit\">: 1<\/span>';\n        $('vc-r-length').innerHTML=lengthLinks>0?lengthLinks+' <span class=\"vc-rcard-unit\">links<\/span> ('+fmt(lengthLinks*pitch,0)+' <span class=\"vc-rcard-unit\">mm)<\/span>':'\u2014';\n        $('vc-r-n2').innerHTML=fmt(n2,1)+' <span class=\"vc-rcard-unit\">RPM<\/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){\n            e.preventDefault();\n            $('vc-power').value=this.getAttribute('data-p');$('vc-n1').value=this.getAttribute('data-n');\n            $('vc-z1').value=this.getAttribute('data-z1');$('vc-z2').value=this.getAttribute('data-z2');\n            $('vc-sf').value=this.getAttribute('data-sf');$('vc-center').value=this.getAttribute('data-c');\n            calculate();\n        });\n    });\n\n    $('vc-form').addEventListener('input',calculate);\n    $('vc-form').addEventListener('change',calculate);\n\n    $('vc-copy-btn').addEventListener('click',function(){\n        var text='Chain Drive Calculation\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nChain: '+$('vc-r-chain').textContent+'\\nDesign Power: '+$('vc-r-pd').textContent+'\\nChain Speed: '+$('vc-r-speed').textContent+'\\nRatio: '+$('vc-r-ratio').textContent+'\\n\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\u2501\\nvibromera.eu\/calculators\/chain-drive-calculator\/';\n        if(navigator.clipboard){navigator.clipboard.writeText(text).then(function(){var b=$('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:'How do I select the right roller chain pitch?',a:'<p>Multiply power by service factor for design power. Look up chain pitch from power rating tables at the small sprocket speed. Common: 08B for light, 10B medium, 12B-16B heavy loads.<\/p>'},\n        {q:'What service factors apply to chain drives?',a:'<p>1.0 uniform\/smooth start, 1.3 moderate shock, 1.5 heavy shock, 1.7 frequent starts\/reversing. Multiply by 1.25 for 16+ hours\/day.<\/p>'},\n        {q:'How do I calculate chain length in links?',a:'<p>L = 2C\/p + (z\u2081+z\u2082)\/2 + [(z\u2082-z\u2081)\/(2\u03c0)]\u00b2\u00d7p\/C. Round up to the nearest even number of links to avoid an offset link.<\/p>'},\n        {q:'What is the maximum chain speed?',a:'<p>Depends on chain size and lubrication: 08B up to 12 m\/s, 10B up to 15 m\/s, 12B up to 18 m\/s. Higher speeds require oil bath or forced lubrication.<\/p>'},\n        {q:'What is the minimum number of teeth for a sprocket?',a:'<p>Recommended minimum: 17 teeth for smooth operation, 21 for high speed. Fewer teeth causes increased wear, noise, and chordal vibration.<\/p>'}\n    ];\n    var fl=$('vc-faq-list');faqData.forEach(function(f){fl.innerHTML+='<div class=\"vc-faq-item\"><button type=\"button\" class=\"vc-faq-q\"><span>'+f.q+'<\/span><svg class=\"vc-faq-chevron\" viewBox=\"0 0 24 24\" fill=\"none\" stroke=\"currentColor\" stroke-width=\"2\"><path d=\"M6 9l6 6 6-6\"\/><\/svg><\/button><div class=\"vc-faq-a\"><div class=\"vc-faq-a-inner\">'+f.a+'<\/div><\/div><\/div>'});\n    fl.addEventListener('click',function(e){var b=e.target.closest('.vc-faq-q');if(b)b.closest('.vc-faq-item').classList.toggle('vc-open')});\n\n    function renderFormulas(){\n        try{\n            katex.render('P_d = P \\\\times K_A',$('vc-katex-1'),{displayMode:true,throwOnError:false});\n            katex.render('L_{links} = \\\\frac{2C}{p} + \\\\frac{z_1+z_2}{2} + \\\\left(\\\\frac{z_2-z_1}{2\\\\pi}\\\\right)^{\\\\!2} \\\\cdot \\\\frac{p}{C}',$('vc-katex-2'),{displayMode:true,throwOnError:false});\n        }catch(e){}\n    }\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>Calculadora online gratuita para sele\u00e7\u00e3o de acionamento por corrente de rolos. 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