{"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\/nl\/crane-wire-rope-minimum-breaking-load-calculator\/","title":{"rendered":"Calculator voor de minimale breeksterkte van kraankabels"},"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\">Nominaal vermogen Q (t)<\/label>\n                    <input type=\"number\" id=\"calculator-Q\" step=\"0.01\" placeholder=\"bijv. 20\">\n                    <div class=\"error-msg\" id=\"calculator-Q-error\">Voer een geldig nominaal laadvermogen in.<\/div>\n                <\/div>\n            <\/div>\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-Qh\">Bevestigingsgewicht Q<sub>H<\/sub> (T)<\/label>\n                    <input type=\"number\" id=\"calculator-Qh\" step=\"0.01\" placeholder=\"bijv. 0,4\">\n                    <div class=\"error-msg\" id=\"calculator-Qh-error\">Voer een geldig gewicht voor de bijlage in.<\/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\">Katrolverhoudingen 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\">Selecteer de poelieverhouding.<\/div>\n                <\/div>\n            <\/div>\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-gamma\">Samengestelde belastingsco\u00ebffici\u00ebnt \u03b3<\/label>\n                    <input type=\"number\" id=\"calculator-gamma\" step=\"0.01\" value=\"1.1\">\n                    <div class=\"error-msg\" id=\"calculator-gamma-error\">Voer een geldige co\u00ebffici\u00ebnt in.<\/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\">Mechanismetype<\/label>\n                    <select id=\"calculator-mechType\">\n                        <option value=\"lifting\">Hoofdlift<\/option>\n                        <option value=\"luffing\">Fok optillen \/ Derricking<\/option>\n                    <\/select>\n                    <div class=\"error-msg\" id=\"calculator-mechType-error\">Selecteer het mechanismetype.<\/div>\n                <\/div>\n            <\/div>\n            <div class=\"col-half\">\n                <div class=\"form-item\">\n                    <label for=\"calculator-ropeType\">Staalkabeltype<\/label>\n                    <select id=\"calculator-ropeType\">\n                        <option value=\"standard\">Standaard staalkabel<\/option>\n                        <option value=\"rotationResist\">Rotatiebestendige staalkabel<\/option>\n                    <\/select>\n                    <div class=\"error-msg\" id=\"calculator-ropeType-error\">Selecteer het type staalkabel.<\/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\">Wikkeltype<\/label>\n            <select id=\"calculator-windingType\">\n                <option value=\"single\">Enkellaagse wikkeling<\/option>\n                <option value=\"multi\">Meerlaagse wikkeling<\/option>\n            <\/select>\n            <div class=\"error-msg\" id=\"calculator-windingType-error\">Selecteer het type wikkeling.<\/div>\n        <\/div>\n\n        <!-- Single Full Width: Duty Class -->\n        <div class=\"form-item\">\n            <label for=\"calculator-dutyClass\">Kraanbelastingsklasse (M-klasse, inclusief Z)<sub>P<\/sub>)<\/label>\n            <select id=\"calculator-dutyClass\">\n                <option value=\"\">Laden\u2026<\/option>\n            <\/select>\n            <div class=\"error-msg\" id=\"calculator-dutyClass-error\">Selecteer de gewenste functieklasse.<\/div>\n        <\/div>\n\n        <div class=\"btn-group\">\n            <button class=\"btn-calc\" id=\"calcBtn\">Bereken S &amp; F<sub>min<\/sub><\/button>\n            <button class=\"btn-reset\" id=\"resetBtn\">Alles resetten<\/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                    Maximale spanning per touw S (kN):\n                    <span class=\"result-value\" id=\"result-S\">&#8211;<\/span>\n                <\/div>\n                <div class=\"result-item\">\n                    Minimale vereiste breekkracht 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\">Formule voor het berekenen van de minimale breeksterkte van een kraankabel<\/h2>\n\n\n\n<p>F<sub>min<\/sub>\u2265S\u00d7Z<sub>p<\/sub><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>F<sub>min<\/sub>: minimale breeksterkte van de staalkabel<\/li>\n\n\n\n<li>S: de maximale touwspanning (eenheid: kN)<\/li>\n\n\n\n<li>Z<sub>p<\/sub>: de minimale ontwerpfactor&nbsp;<\/li>\n<\/ul>\n\n\n\n<h3 class=\"wp-block-heading\">Formule voor het berekenen van de maximale kabelspanning van een kraan<\/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>V: Nominaal hefvermogen (eenheid: kg)<\/li>\n\n\n\n<li>Q<sub>H<\/sub>: Totaalgewicht van de hijsinrichting, inclusief de haak, katrol, hijsbalk, grijpbak, trechter en alle andere accessoires die met de staalkabel mee omhoog en omlaag bewegen (eenheid: kg)<\/li>\n\n\n\n<li>g: Versnelling als gevolg van de zwaartekracht, vaste waarde van 9,8 m\/s\u00b2<\/li>\n\n\n\n<li>m: Verhouding katrolblok<\/li>\n\n\n\n<li>\u03b3: Uitgebreide belastingcorrectiefactor, doorgaans ingesteld op 1,1.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Notities<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bij het hijsen van staalkabels moet bij de berekening van S rekening worden gehouden met de volgende vier factoren: het nominale hijsvermogen van de hijsinstallatie, de massa van de katrol en\/of andere hijsaccessoires, de overbrengingsverhouding van het kabelopwikkelsysteem en het rendement van het kabelopwikkelsysteem (zoals het lagerrendement).<\/li>\n\n\n\n<li>De katrolverhouding van een systeem met \u00e9\u00e9n trommel is gelijk aan het aantal dragende touwtakken. Bijvoorbeeld, 2 takken geven een verhouding m=2. Voor een systeem met twee trommels is de verhouding de helft van het aantal takken. Met 4 dragende takken en 2 vrije uiteinden is m = 4\/2 = 2.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Toepasselijke kranen en takels<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>bovenloopkranen<\/li>\n\n\n\n<li>hijskabel<\/li>\n\n\n\n<li>portaal- of semi-portaalkranen<\/li>\n\n\n\n<li>portaal- of semi-portaalbrugkranen<\/li>\n\n\n\n<li>mobiele kranen<\/li>\n\n\n\n<li>cantileverkranen (kolom-, zwenk-, wand- of loopkranen)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"De calculator voor de minimale breeksterkte (MBL) van kraankabels is een handig hulpmiddel om snel de draagcapaciteit van staalkabels te schatten en de juiste kabelsoort te selecteren. Door verschillende kabelspecificaties in te voeren, kunnen gebruikers automatisch en snel de breeksterkte van diverse kabelconstructies vergelijken en de compatibiliteit met de bijbehorende trommels bepalen. Bovendien helpt de calculator bij het ontwerpen van hijsmechanismecomponenten zoals trommels en katrollen, en bij het controleren van het motorvermogen. Tijdens de kraanbediening en het onderhoud kunnen onderhoudstechnici de gegevens van deze calculator raadplegen om te bepalen of vervanging van de staalkabel nodig is en om te controleren of de nieuwe vervangende staalkabels voldoen aan de oorspronkelijke veiligheidsnormen. Het selecteren van een staalkabel met de juiste MBL helpt dus overbelasting te voorkomen, het risico op ongevallen te verlagen en de levensduur van de staalkabels te verlengen.","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\/nl\/wp-json\/wp\/v2\/posts\/17121"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/comments?post=17121"}],"version-history":[{"count":8,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/posts\/17121\/revisions"}],"predecessor-version":[{"id":17136,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/posts\/17121\/revisions\/17136"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/media\/17122"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/media?parent=17121"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/categories?post=17121"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/tags?post=17121"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}