{"id":17121,"date":"2026-06-18T10:00:07","date_gmt":"2026-06-18T10:00:07","guid":{"rendered":"https:\/\/www.dgcrane.com\/?p=17121"},"modified":"2026-06-18T10:08:54","modified_gmt":"2026-06-18T10:08:54","slug":"crane-wire-rope-minimum-breaking-load-calculator","status":"publish","type":"post","link":"https:\/\/www.dgcrane.com\/es\/crane-wire-rope-minimum-breaking-load-calculator\/","title":{"rendered":"Calculadora de carga m\u00ednima de rotura de cables de gr\u00faa"},"content":{"rendered":"<!-- WordPress Embed Wire Rope Tension Calculator | Two Column Layout Fixed Duty Dropdown Bug -->\n<div id=\"calculator\">\n    <style>\n        #calculator {\n            --primary-color: #0a3487;\n            --primary-hover: #F58423;\n            --error-color: #e53935;\n            --bg-color: #EAEEF7;\n            --text-color: #4a4a4a;\n            max-width: 545px;\n            padding: 30px;\n            background: var(--bg-color);\n            font-family: system-ui, sans-serif;\n            color: var(--text-color);\n            box-sizing: border-box;\n        }\n        #calculator .calc-wrap {\n            width: 100%;\n        }\n        \/* Two Column Row Container *\/\n        #calculator .row-two-col {\n            display: flex;\n            gap: 16px;\n        }\n        #calculator .col-half {\n            flex: 1;\n            width: 50%;\n        }\n        #calculator label {\n            display: block;\n            font-size: 14px;height: 22px;\n        }\n#calculator div>div{gap: 0}\n        #calculator input,\n        #calculator select {\n            width: 100%;\n            height: 36px;\n            font-size: 16px;\n            border: 1px solid #ccc;\n            border-radius: 0;\n            padding: 0 10px;\n            box-sizing: border-box;\n            transition: 0.2s ease;\n            background: #ffffff;\n        }\n        #calculator input:focus,\n        #calculator select:focus {\n            outline: none;\n            border: 2px solid var(--primary-color);\n        }\n        #calculator input.error,\n        #calculator select.error {\n            border: 2px solid var(--error-color);\n        }\n        #calculator .error-msg {\n            display: none;\n            font-size: 12px;\n            color: var(--error-color);\n            margin-top: 4px;\n        }\n        #calculator .btn-group {\n            display: flex;\n            gap: 10px;\n            margin: 20px 0 10px 0;\n        }\n        #calculator button {\n            flex: 1;\n            height: 34px;\n            line-height: 34px;\n            font-size: 14px;\n            border: none;\n            border-radius: 0;\n            cursor: pointer;\n            transition: 0.2s ease;\n        }\n        #calculator .btn-calc {\n            background: var(--primary-color);\n            color: #ffffff;\n        }\n        #calculator .btn-calc:hover {\n            background: var(--primary-hover);\n        }\n        #calculator .btn-reset {\n            background: #cccccc;\n            color: #000000;\n        }\n        #calculator .result-box {\n            margin-top: 12px;\n            padding: 10px;\n            background: #ffffff;\n            border: 1px solid #dddddd;\n        }\n        #calculator .result-row {\n            display: flex;\n            gap: 16px;\n        }\n        #calculator .result-item {\n            flex: 1;\n            font-size: 16px;\n            margin: 8px 0;\n        }\n        #calculator .result-value {\n            font-size: 20px;\n            font-weight: bold;\n            color: var(--primary-color);\n            display: block;\n        }\n        #calculator sub {\n            font-size: 0.7em;\n        }\n        \/* Mobile Responsive: switch to single column *\/\n        @media (max-width: 768px) {\n            #calculator .row-two-col,\n            #calculator .result-row {\n                flex-direction: column;\n                gap: 0;\n            }\n            #calculator .col-half {\n                width: 100%;\n            }\n            #calculator input,\n            #calculator select {\n                height: 0.7rem;\n                font-size: 0.28rem;\n            }\n            #calculator button {\n                height: 0.7rem;\n                line-height: 0.7rem;\n                font-size: 0.28rem;\n            }\n            #calculator .btn-group {\n                flex-direction: column;\n            }\n            #calculator label {\n                font-size: 0.28rem;\n            }\n        }\n    <\/style>\n    <div class=\"calc-wrap\">\n        <!-- Row 1: Q & Qh Two Column -->\n        <div class=\"row-two-col\">\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-Q\">Carga nominal Q (t)<\/label>\n                    <input type=\"number\" id=\"calculator-Q\" step=\"0.01\" placeholder=\"p. ej. 20\">\n                    <div class=\"error-msg\" id=\"calculator-Q-error\">Introduzca una carga nominal v\u00e1lida.<\/div>\n                <\/div>\n            <\/div>\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-Qh\">Peso del accesorio Q<sub>h<\/sub> (t)<\/label>\n                    <input type=\"number\" id=\"calculator-Qh\" step=\"0.01\" placeholder=\"p. ej. 0,4\">\n                    <div class=\"error-msg\" id=\"calculator-Qh-error\">Por favor, introduzca un peso de accesorio v\u00e1lido<\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        <!-- Row 2: Sheave Ratio & Gamma Two Column -->\n        <div class=\"row-two-col\">\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-m\">Relaciones de poleas m<\/label>\n                    <select id=\"calculator-m\">\n                        <option value=\"2\">2<\/option>\n                        <option value=\"3\">3<\/option>\n                        <option value=\"4\" selected>4<\/option>\n                        <option value=\"5\">5<\/option>\n                        <option value=\"6\">6<\/option>\n                        <option value=\"8\">8<\/option>\n                    <\/select>\n                    <div class=\"error-msg\" id=\"calculator-m-error\">Seleccione la relaci\u00f3n de poleas.<\/div>\n                <\/div>\n            <\/div>\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-gamma\">Coeficiente de carga compuesta \u03b3<\/label>\n                    <input type=\"number\" id=\"calculator-gamma\" step=\"0.01\" value=\"1.1\">\n                    <div class=\"error-msg\" id=\"calculator-gamma-error\">Por favor, introduzca un coeficiente v\u00e1lido.<\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        <!-- Row3: Mechanism & Rope Type Two Column -->\n        <div class=\"row-two-col\">\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-mechType\">Tipo de mecanismo<\/label>\n                    <select id=\"calculator-mechType\">\n                        <option value=\"lifting\">Elevaci\u00f3n principal<\/option>\n                        <option value=\"luffing\">Abatimiento de la pluma \/ Derricking<\/option>\n                    <\/select>\n                    <div class=\"error-msg\" id=\"calculator-mechType-error\">Seleccione el tipo de mecanismo.<\/div>\n                <\/div>\n            <\/div>\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-ropeType\">Tipo de cable de acero<\/label>\n                    <select id=\"calculator-ropeType\">\n                        <option value=\"standard\">Cable de acero est\u00e1ndar<\/option>\n                        <option value=\"rotationResist\">Cable de acero resistente a la rotaci\u00f3n<\/option>\n                    <\/select>\n                    <div class=\"error-msg\" id=\"calculator-ropeType-error\">Seleccione el tipo de cable de acero.<\/div>\n                <\/div>\n            <\/div>\n        <\/div>\n\n        <!-- Single Full Width: Winding Type (Only for Lifting) -->\n        <div class=\"form-item\" id=\"windingTypeWrapper\">\n            <label for=\"calculator-windingType\">Tipo de bobinado<\/label>\n            <select id=\"calculator-windingType\">\n                <option value=\"single\">Bobinado de una sola capa<\/option>\n                <option value=\"multi\">Bobinado multicapa<\/option>\n            <\/select>\n            <div class=\"error-msg\" id=\"calculator-windingType-error\">Seleccione el tipo de bobinado.<\/div>\n        <\/div>\n\n        <!-- Single Full Width: Duty Class -->\n        <div class=\"form-item\">\n            <label for=\"calculator-dutyClass\">Clase de servicio de gr\u00faa (Clase M, incluye Z)<sub>pag<\/sub>)<\/label>\n            <select id=\"calculator-dutyClass\">\n                <option value=\"\">Cargando\u2026<\/option>\n            <\/select>\n            <div class=\"error-msg\" id=\"calculator-dutyClass-error\">Seleccione la categor\u00eda de servicio.<\/div>\n        <\/div>\n\n        <div class=\"btn-group\">\n            <button class=\"btn-calc\" id=\"calcBtn\">Calcular S y F<sub>m\u00edn.<\/sub><\/button>\n            <button class=\"btn-reset\" id=\"resetBtn\">Restablecer todo<\/button>\n        <\/div>\n\n        <!-- Two Column Result Area -->\n        <div class=\"result-box\">\n            <div class=\"result-row\">\n                <div class=\"result-item\">\n                    Tensi\u00f3n m\u00e1xima de una sola cuerda S (kN):\n                    <span class=\"result-value\" id=\"result-S\">&#8211;<\/span>\n                <\/div>\n                <div class=\"result-item\">\n                    Fuerza de rotura m\u00ednima requerida F (kN):\n                    <span class=\"result-value\" id=\"result-Fmin\">&#8211;<\/span>\n                <\/div>\n            <\/div>\n        <\/div>\n    <\/div>\n\n    <script>\n        let calcTool_S = 0;\n        const g = 9.8;\n\n        const calcTool_ZpTable = {\n            lifting: {\n                single: {\n                    standard: {\n                        M1: 3.15, M2: 3.35, M3: 3.55, M4: 4.00, M5: 4.50, M6: 5.60, M7: 7.10, M8: 9.00\n                    },\n                    rotationResist: {\n                        M1: 3.15, M2: 3.35, M3: 3.55, M4: 4.00, M5: 4.50, M6: 5.60, M7: 7.10, M8: 9.00\n                    }\n                },\n                multi: {\n                    standard: {\n                        M1: 3.55, M2: 3.55, M3: 3.55, M4: 4.00, M5: 4.50, M6: 5.60, M7: null, M8: null\n                    },\n                    rotationResist: {\n                        M1: 3.55, M2: 3.55, M3: 3.55, M4: 4.00, M5: 4.50, M6: 5.60, M7: null, M8: null\n                    }\n                }\n            },\n            luffing: {\n                single: {\n                    standard: {\n                        M1: 3.55, M2: 3.55, M3: 3.55, M4: 4.00, M5: 4.50, M6: 5.60, M7: 7.10, M8: 9.00\n                    },\n                    rotationResist: {\n                        M1: 4.50, M2: 4.50, M3: 4.50, M4: 4.50, M5: 4.50, M6: 5.60, M7: null, M8: null\n                    }\n                }\n            }\n        };\n\n        function calcTool_updateDutyClassOptions() {\n            const mech = document.getElementById('calculator-mechType').value;\n            const winding = document.getElementById('calculator-windingType').value;\n            const rope = document.getElementById('calculator-ropeType').value;\n            const selectEl = document.getElementById('calculator-dutyClass');\n            selectEl.options.length = 0;\n\n            const dataSet = calcTool_ZpTable[mech][winding][rope];\n            for (const [mClass, zpVal] of Object.entries(dataSet)) {\n                if (zpVal === null) continue;\n                const opt = new Option(`${mClass} (Z\u209a = ${zpVal})`, zpVal);\n                selectEl.options.add(opt);\n                if(mClass === \"M3\") opt.selected = true;\n            }\n        }\n\n        function calcTool_toggleWindingType() {\n            const mech = document.getElementById('calculator-mechType').value;\n            const wrap = document.getElementById('windingTypeWrapper');\n            wrap.style.display = mech === 'lifting' ? 'block' : 'none';\n            calcTool_updateDutyClassOptions();\n        }\n\n        function calcTool_setError(fieldId, msgId) {\n            const field = document.getElementById(fieldId);\n            const msg = document.getElementById(msgId);\n            field.classList.add('error');\n            msg.style.display = 'block';\n        }\n        function calcTool_clearError(fieldId, msgId) {\n            const field = document.getElementById(fieldId);\n            const msg = document.getElementById(msgId);\n            field.classList.remove('error');\n            msg.style.display = 'none';\n        }\n        function calcTool_clearAllError() {\n            const fields = ['Q','Qh','m','gamma','mechType','windingType','ropeType','dutyClass'];\n            fields.forEach(key => calcTool_clearError('calculator-' + key, 'calculator-' + key + '-error'));\n        }\n\n        function calcTool_validateInput() {\n            let isValid = true;\n            calcTool_clearAllError();\n            const Q = parseFloat(document.getElementById('calculator-Q').value);\n            const Qh = parseFloat(document.getElementById('calculator-Qh').value);\n            const m = parseInt(document.getElementById('calculator-m').value);\n            const gamma = parseFloat(document.getElementById('calculator-gamma').value);\n            if (isNaN(Q) || Q <= 0) { calcTool_setError('calculator-Q','calculator-Q-error'); isValid = false; }\n            if (isNaN(Qh) || Qh < 0) { calcTool_setError('calculator-Qh','calculator-Qh-error'); isValid = false; }\n            if (isNaN(m) || m <= 0) { calcTool_setError('calculator-m','calculator-m-error'); isValid = false; }\n            if (isNaN(gamma) || gamma <= 0) { calcTool_setError('calculator-gamma','calculator-gamma-error'); isValid = false; }\n            return isValid;\n        }\n\n        function calcTool_doCalculate() {\n            if (!calcTool_validateInput()) return;\n            const Q_t = parseFloat(document.getElementById('calculator-Q').value);\n            const Qh_t = parseFloat(document.getElementById('calculator-Qh').value);\n            const m = parseInt(document.getElementById('calculator-m').value);\n            const gamma = parseFloat(document.getElementById('calculator-gamma').value);\n            const Zp = parseFloat(document.getElementById('calculator-dutyClass').value);\n\n            const Q_kg = Q_t * 1000;\n            const Qh_kg = Qh_t * 1000;\n            const S_N = ((Q_kg + Qh_kg) * g \/ m) * gamma;\n            calcTool_S = S_N \/ 1000;\n            const Fmin = calcTool_S * Zp;\n\n            document.getElementById('result-S').innerText = calcTool_S.toFixed(2);\n            document.getElementById('result-Fmin').innerText = Fmin.toFixed(2);\n        }\n\n        function calcTool_doReset() {\n            document.getElementById('calculator-Q').value = '';\n            document.getElementById('calculator-Qh').value = '';\n            document.getElementById('calculator-gamma').value = '1.1';\n            document.getElementById('calculator-m').value = '4';\n            document.getElementById('calculator-mechType').value = 'lifting';\n            document.getElementById('calculator-windingType').value = 'single';\n            document.getElementById('calculator-ropeType').value = 'standard';\n            calcTool_clearAllError();\n            document.getElementById('result-S').innerText = '-';\n            document.getElementById('result-Fmin').innerText = '-';\n            calcTool_S = 0;\n            calcTool_toggleWindingType();\n        }\n\n        function calcTool_bindEvents() {\n            document.getElementById('calculator-mechType').addEventListener('change', calcTool_toggleWindingType);\n            document.getElementById('calculator-windingType').addEventListener('change', calcTool_updateDutyClassOptions);\n            document.getElementById('calculator-ropeType').addEventListener('change', calcTool_updateDutyClassOptions);\n\n            const inputList = [\n                {id:'calculator-Q', err:'calculator-Q-error'},\n                {id:'calculator-Qh', err:'calculator-Qh-error'},\n                {id:'calculator-m', err:'calculator-m-error'},\n                {id:'calculator-gamma', err:'calculator-gamma-error'},\n                {id:'calculator-mechType', err:'calculator-mechType-error'},\n                {id:'calculator-windingType', err:'calculator-windingType-error'},\n                {id:'calculator-ropeType', err:'calculator-ropeType-error'},\n                {id:'calculator-dutyClass', err:'calculator-dutyClass-error'}\n            ];\n            inputList.forEach(item => {\n                document.getElementById(item.id).addEventListener('input', () => calcTool_clearError(item.id, item.err));\n            });\n\n            document.getElementById('calcBtn').addEventListener('click', calcTool_doCalculate);\n            document.getElementById('resetBtn').addEventListener('click', calcTool_doReset);\n        }\n\n        document.addEventListener('DOMContentLoaded', function(){\n            calcTool_bindEvents();\n            calcTool_toggleWindingType();\n        });\n    <\/script>\n<\/div>\n\n\n\n<div style=\"height:60px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">F\u00f3rmula para calcular la carga m\u00ednima de rotura de un cable de gr\u00faa<\/h2>\n\n\n\n<p>F<sub>minuto<\/sub>\u2265S\u00d7Z<sub>p<\/sub><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>F<sub>m\u00edn.<\/sub>: carga m\u00ednima de rotura del cable de acero<\/li>\n\n\n\n<li>S: tensi\u00f3n m\u00e1xima de la cuerda (unidad: kN)<\/li>\n\n\n\n<li>Z<sub>p<\/sub>: el factor de dise\u00f1o m\u00ednimo&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">F\u00f3rmula para calcular la tensi\u00f3n m\u00e1xima del cable de la gr\u00faa<\/h3>\n\n\n\n<p>S=\uff08Q+Qh\uff09g\/m\u00d7\u03b3<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>P: Capacidad de elevaci\u00f3n nominal (unidad: kg)<\/li>\n\n\n\n<li>Q<sub>h<\/sub>: Peso total del dispositivo de elevaci\u00f3n, incluyendo el gancho, el bloque de poleas, la viga de elevaci\u00f3n, la cuchara de agarre, la tolva y todos los dem\u00e1s accesorios que suben y bajan con el cable de acero (unidad: kg)<\/li>\n\n\n\n<li>g: Aceleraci\u00f3n debida a la gravedad, valor fijo de 9,8 m\/s\u00b2.<\/li>\n\n\n\n<li>m: Relaci\u00f3n del bloque de poleas<\/li>\n\n\n\n<li>\u03b3: Factor de correcci\u00f3n de carga integral, generalmente tomado como 1,1.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Notas<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Para el izamiento de cables de acero, el c\u00e1lculo de S debe tener en cuenta los siguientes cuatro factores: la capacidad de elevaci\u00f3n nominal de la maquinaria de izamiento, la masa del bloque de poleas y\/u otros accesorios de elevaci\u00f3n, la relaci\u00f3n del sistema de enrollado del cable y la eficiencia del sistema de enrollado del cable (como la eficiencia de los cojinetes).<\/li>\n\n\n\n<li>La relaci\u00f3n de poleas de un sistema de tambor simple es igual al n\u00famero de ramales de cable que soportan carga. Por ejemplo, con 2 ramales, la relaci\u00f3n es m=2. Para un sistema de doble tambor, la relaci\u00f3n es la mitad del n\u00famero de ramales. Con 4 ramales que soportan carga y 2 ramales libres, m = 4\/2 = 2.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Gr\u00faas y polipastos aplicables<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>gr\u00faas puente viajeras<\/li>\n\n\n\n<li>polipastos de cable de acero<\/li>\n\n\n\n<li>gr\u00faas p\u00f3rtico o semip\u00f3rtico<\/li>\n\n\n\n<li>gr\u00faas puente p\u00f3rtico o semip\u00f3rtico<\/li>\n\n\n\n<li>gr\u00faas m\u00f3viles<\/li>\n\n\n\n<li>Gr\u00faas voladizas (de columna, de pluma, de pared o m\u00f3viles)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"La calculadora de carga m\u00ednima de rotura (MBL) para cables de gr\u00faa es una herramienta r\u00e1pida para estimar la capacidad de carga de los cables y verificar la selecci\u00f3n del modelo. Al introducir diferentes especificaciones de cables, los usuarios pueden comparar de forma autom\u00e1tica y r\u00e1pida la resistencia a la rotura de diversas construcciones y determinar su compatibilidad con los tambores correspondientes. Adem\u00e1s, facilita el dise\u00f1o de los componentes del mecanismo de elevaci\u00f3n, incluidos tambores y poleas, as\u00ed como la verificaci\u00f3n de la potencia del motor. Durante la operaci\u00f3n y el mantenimiento de la gr\u00faa, los t\u00e9cnicos pueden consultar los datos de esta calculadora para evaluar si es necesario reemplazar el cable y verificar que los nuevos cables de repuesto cumplan con los est\u00e1ndares de factor de seguridad del dise\u00f1o original. Por lo tanto, seleccionar un cable con una MBL adecuada ayuda a evitar sobrecargas, reducir los riesgos de accidentes y prolongar la vida \u00fatil de los cables.","protected":false},"author":8,"featured_media":17122,"parent":0,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"single-onlinetools.php","format":"standard","meta":{"_acf_changed":false,"rank_math_lock_modified_date":false,"pgc_sgb_lightbox_settings":"","footnotes":""},"categories":[1059],"tags":[],"class_list":["post-17121","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-tools"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/posts\/17121"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/comments?post=17121"}],"version-history":[{"count":8,"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/posts\/17121\/revisions"}],"predecessor-version":[{"id":17136,"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/posts\/17121\/revisions\/17136"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/media\/17122"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/media?parent=17121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/categories?post=17121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/es\/wp-json\/wp\/v2\/tags?post=17121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}