{"id":17088,"date":"2026-06-12T02:38:03","date_gmt":"2026-06-12T02:38:03","guid":{"rendered":"https:\/\/www.dgcrane.com\/?p=17088"},"modified":"2026-06-15T05:46:38","modified_gmt":"2026-06-15T05:46:38","slug":"crane-sheave-minimum-diameter-calculator","status":"publish","type":"post","link":"https:\/\/www.dgcrane.com\/nl\/crane-sheave-minimum-diameter-calculator\/","title":{"rendered":"Calculator voor de minimale diameter van een kraanschijf"},"content":{"rendered":"<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-color: var(--bg-color);\n            color: var(--text-color);\n            font-family: Arial, sans-serif;\n            box-sizing: border-box;\n        }\n\n        #calculator .calc-title {\n            font-size: 18px;\n            margin: 0 0 20px 0;\n            text-align: center;\n            font-weight: 600;\n        }\n\n        #calculator .calc-row {\n            margin-bottom: 18px;\n        }\n\n        #calculator label {\n            display: block;\n            font-size: 14px;\n            margin-bottom: 6px;\n        }\n\n        #calculator input,\n        #calculator select {\n            width: 100%;\n            height: 36px;\n            padding: 0 10px;\n            border: 1px solid #ccc;\n            border-radius: 0;\n            font-size: 16px;\n            box-sizing: border-box;\n            transition: border 0.2s ease;\n            background: #fff;\n        }\n\n        #calculator input:focus,\n        #calculator select:focus {\n            outline: none;\n            border: 2px solid var(--primary-color);\n        }\n\n        #calculator .input-error {\n            border: 2px solid var(--error-color) !important;\n        }\n\n        #calculator .error-msg {\n            display: none;\n            font-size: 12px;\n            color: var(--error-color);\n            margin-top: 4px;\n        }\n\n        #calculator .error-msg.show {\n            display: block;\n        }\n\n        #calculator .btn-group {\n            display: flex;\n            gap: 10px;\n            margin: 20px 0;\n        }\n\n        #calculator button {\n            flex: 1;\n            height: 34px;\n            line-height: 34px;\n            border: none;\n            border-radius: 0;\n            font-size: 14px;\n            cursor: pointer;\n            transition: background-color 0.2s ease;\n            background-color: var(--primary-color);\n            color: #fff;\n        }\n\n        #calculator button:hover {\n            background-color: var(--primary-hover);\n        }\n\n        #calculator .result-wrap {\n            margin-top: 20px;\n            padding: 12px;\n            border: 1px solid #ccc;\n            background: #fff;\n        }\n\n        #calculator .result-text {\n            font-size: 16px;\n            line-height: 26px;\n            min-height: 40px;\n        }\n\n        #calculator .result-group {\n            margin: 8px 0;\n            padding: 6px 0;\n            border-bottom: 1px dashed #eee;\n        }\n\n        #calculator .result-group:last-child {\n            border-bottom: none;\n        }\n\n        @media (max-width: 768px) {\n            #calculator input,\n            #calculator select {\n                height: 0.7rem;\n                font-size: 0.28rem;\n            }\n            #calculator label,\n            #calculator button,\n            #calculator .result-text {\n                font-size: 0.28rem;\n            }\n            #calculator .btn-group {\n                flex-direction: column;\n            }\n            #calculator button {\n                width: 100%;\n                height: 0.7rem;\n                line-height: 0.7rem;\n            }\n        }\n    <\/style>\n\n    <h3 class=\"calc-title\">Calculator voor de minimale diameter van een kraanschijf<\/h3>\n\n    <!-- Crane Type -->\n    <div class=\"calc-row\">\n        <label for=\"calculator-craneType\">Kraantype<\/label>\n        <select id=\"calculator-craneType\">\n            <option value=\"normal\">Bovenloopkranen<\/option>\n            <option value=\"normal\">Portaal- of semi-portaalkranen<\/option>\n            <option value=\"normal\">Portaal- of semi-portaalbrugkranen<\/option>\n            <option value=\"normal\">Vrijdragende kranen (kolom-, zwenk-, wand- of loopkranen)<\/option>\n            <option value=\"mobile\">Mobiele kraan<\/option>\n        <\/select>\n    <\/div>\n\n    <!-- Normal Crane Area -->\n    <div id=\"calculator-normalWrap\">\n        <div class=\"calc-row\">\n            <label for=\"calculator-normalDuty\">Bedrijfsklasse (ISO 4301-1)<\/label>\n            <select id=\"calculator-normalDuty\">\n                <option value=\"M1\">M1<\/option>\n                <option value=\"M2\">M2<\/option>\n                <option value=\"M3\">M3<\/option>\n                <option value=\"M4\">M4<\/option>\n                <option value=\"M5\">M5<\/option>\n                <option value=\"M6\">M6<\/option>\n                <option value=\"M7\">M7<\/option>\n                <option value=\"M8\">M8<\/option>\n            <\/select>\n        <\/div>\n        <div class=\"calc-row\">\n            <label for=\"calculator-normalType\">Katrolcategorie<\/label>\n            <select id=\"calculator-normalType\">\n                <option value=\"main\">Hoofdwerkschijf (h\u2082)<\/option>\n                <option value=\"balance\">Balansschijf (h\u2083)<\/option>\n            <\/select>\n        <\/div>\n    <\/div>\n\n    <!-- Mobile Crane Area -->\n    <div id=\"calculator-mobileWrap\" style=\"display: none;\">\n        <div class=\"calc-row\">\n            <label for=\"calculator-mobileCat\">Katrolcategorie<\/label>\n            <select id=\"calculator-mobileCat\">\n                <option value=\"h2\">Hoofdwerkschijf (h\u2082)<\/option>\n                <option value=\"h3\">Balansschijf (h\u2083)<\/option>\n            <\/select>\n        <\/div>\n        <div class=\"calc-row\">\n            <label for=\"calculator-mobileSelect\">Mechanismetype<\/label>\n            <select id=\"calculator-mobileSelect\">\n                <option value=\"lift\">Hefmechanisme<\/option>\n                <option value=\"jib\">Fok-\/luffmechanisme<\/option>\n                <option value=\"telescope\">Telescoopmechanisme<\/option>\n            <\/select>\n        <\/div>\n        <div class=\"calc-row\">\n            <label for=\"calculator-ropeType\">Touwtype<\/label>\n            <select id=\"calculator-ropeType\">\n                <option value=\"std\">Standaard touw<\/option>\n                <option value=\"anti\">Rotatiebestendig touw<\/option>\n            <\/select>\n        <\/div>\n    <\/div>\n\n    <!-- Rope Strand Coefficient t -->\n    <div class=\"calc-row\">\n        <label for=\"calculator-ropeT\">Touwstrengco\u00ebffici\u00ebnt (t)<\/label>\n        <select id=\"calculator-ropeT\">\n            <option value=\"1.25\">3 strengen (t=1,25)<\/option>\n            <option value=\"1.15\">4~5 strengen (t=1,15)<\/option>\n            <option value=\"1.00\">6~10 strengen (t=1,00)<\/option>\n            <option value=\"0.95\">8~10 strengen gevuld met plastic (t=0,95)<\/option>\n            <option value=\"1.00\">10+ strengen rotatiebestendig (t=1,00)<\/option>\n        <\/select>\n    <\/div>\n\n    <!-- Wire Rope Diameter d -->\n    <div class=\"calc-row\">\n        <label for=\"calculator-ropeD\">Diameter van de staalkabel d (mm)<\/label>\n        <input type=\"number\" id=\"calculator-ropeD\" placeholder=\"Voer de diameter in\">\n        <div class=\"error-msg\" id=\"calculator-dErr\">Voer een geldige diameter in, groter dan 0.<\/div>\n    <\/div>\n\n    <!-- Buttons -->\n    <div class=\"btn-group\">\n        <button id=\"calculator-btnCalc\">Berekenen<\/button>\n        <button id=\"calculator-btnReset\">Reset<\/button>\n    <\/div>\n\n    <!-- Result -->\n    <div class=\"result-wrap\">\n        <div class=\"result-text\" id=\"calculator-resultBox\">Het resultaat wordt hier weergegeven.<\/div>\n    <\/div>\n\n    <script>\n        (function() {\n            const craneType = document.getElementById('calculator-craneType');\n            const normalWrap = document.getElementById('calculator-normalWrap');\n            const mobileWrap = document.getElementById('calculator-mobileWrap');\n            const normalDuty = document.getElementById('calculator-normalDuty');\n            const normalSheaveType = document.getElementById('calculator-normalType');\n            const mobileCat = document.getElementById('calculator-mobileCat');\n            const mobileSelect = document.getElementById('calculator-mobileSelect');\n            const ropeType = document.getElementById('calculator-ropeType');\n            const ropeT = document.getElementById('calculator-ropeT');\n            const ropeD = document.getElementById('calculator-ropeD');\n            const btnCalc = document.getElementById('calculator-btnCalc');\n            const btnReset = document.getElementById('calculator-btnReset');\n            const resultBox = document.getElementById('calculator-resultBox');\n            const dErr = document.getElementById('calculator-dErr');\n            const PREFERRED_H = 20;\n\n            \/\/ Switch crane type display\n            craneType.addEventListener('change', function() {\n                if (this.value === 'mobile') {\n                    normalWrap.style.display = 'none';\n                    mobileWrap.style.display = 'block';\n                } else {\n                    normalWrap.style.display = 'block';\n                    mobileWrap.style.display = 'none';\n                }\n                resultBox.textContent = 'Result will be displayed here';\n                clearInputError();\n            });\n\n            \/\/ Clear error\n            function clearInputError() {\n                ropeD.classList.remove('input-error');\n                dErr.classList.remove('show');\n            }\n\n            \/\/ Input validation\n            function validateInput() {\n                clearInputError();\n                const dVal = parseFloat(ropeD.value);\n                if (isNaN(dVal) || dVal <= 0) {\n                    ropeD.classList.add('input-error');\n                    dErr.classList.add('show');\n                    return false;\n                }\n                return true;\n            }\n            ropeD.addEventListener('input', validateInput);\n\n            \/\/ Normal crane h value map\n            const normalHMap = {\n                M1: { h2:12.5, h3_min:11.2, h3_opt:12.5 },\n                M2: { h2:14.0, h3_min:12.5, h3_opt:14.0 },\n                M3: { h2:16.0, h3_min:14.0, h3_opt:16.0 },\n                M4: { h2:18.0, h3_min:16.0, h3_opt:18.0 },\n                M5: { h2:20.0, h3_min:18.0, h3_opt:20.0 },\n                M6: { h2:22.4, h3_min:20.0, h3_opt:22.4 },\n                M7: { h2:25.0, h3_min:22.4, h3_opt:25.0 },\n                M8: { h2:28.0, h3_min:25.0, h3_opt:28.0 }\n            };\n\n            \/\/ Mobile crane standard h value map\n            const mobileHMap = {\n                h2: {\n                    lift: { std:18, anti:18 },\n                    jib: { std:16, anti:16 },\n                    telescope: { std:14, anti:14 }\n                },\n                h3: {\n                    lift: { std:14, anti:18 },\n                    jib: { std:12.5, anti:16 },\n                    telescope: { std:10, anti:10 }\n                }\n            };\n\n            \/\/ Calculate\n            btnCalc.addEventListener('click', function() {\n                resultBox.innerHTML = '';\n                if (!validateInput()) return;\n                const t = parseFloat(ropeT.value);\n                const d = parseFloat(ropeD.value);\n                const craneCat = craneType.value;\n                let html = '';\n\n                \/\/ Non-mobile crane\n                if (craneCat === 'normal') {\n                    const dutyKey = normalDuty.value;\n                    const sheaveCat = normalSheaveType.value;\n                    const hData = normalHMap[dutyKey];\n                    if (sheaveCat === 'main') {\n                        const D2 = (hData.h2 * t * d).toFixed(2);\n                        html = `<div class=\"result-group\">Main Working Sheave Minimum Diameter D\u2082 \u2265 ${D2} mm<\/div>`;\n                    } else {\n                        const D3_min = (hData.h3_min * t * d).toFixed(2);\n                        const D3_opt = (hData.h3_opt * t * d).toFixed(2);\n                        html = `\n                            <div class=\"result-group\">\n                                <strong>Balance Sheave Minimum Required:<\/strong><br>\n                                D\u2083 \u2265 ${D3_min} mm\n                            <\/div>\n                            <div class=\"result-group\">\n                                <strong>Balance Sheave Preferred Value:<\/strong><br>\n                                D\u2083 \u2265 ${D3_opt} mm\n                            <\/div>\n                        `;\n                    }\n                }\n                \/\/ Mobile crane\n                else {\n                    const sCat = mobileCat.value;\n                    const mech = mobileSelect.value;\n                    const rType = ropeType.value;\n                    const minH = mobileHMap[sCat][mech][rType];\n                    const isAnti = rType === 'anti';\n\n                    const minD = (minH * t * d).toFixed(2);\n                    const preferredD = (PREFERRED_H * t * d).toFixed(2);\n\n                    if (!isAnti) {\n                        html = `<div class=\"result-group\">Minimum Required Value: D \u2265 ${minD} mm<\/div>`;\n                    } else {\n                        html = `\n                            <div class=\"result-group\">\n                                <strong>Minimum Required Value:<\/strong><br>\n                                D \u2265 ${minD} mm\n                            <\/div>\n                            <div class=\"result-group\">\n                                <strong>Preferred Minimum Value (Recommended):<\/strong><br>\n                                D \u2265 ${preferredD} mm\n                            <\/div>\n                        `;\n                    }\n                }\n                resultBox.innerHTML = html;\n            });\n\n            \/\/ Reset\n            btnReset.addEventListener('click', function() {\n                craneType.selectedIndex = 0;\n                normalDuty.selectedIndex = 0;\n                normalSheaveType.selectedIndex = 0;\n                mobileCat.selectedIndex = 0;\n                mobileSelect.selectedIndex = 0;\n                ropeType.selectedIndex = 0;\n                ropeT.selectedIndex = 0;\n                ropeD.value = '';\n                resultBox.textContent = 'Result will be displayed here';\n                normalWrap.style.display = 'block';\n                mobileWrap.style.display = 'none';\n                clearInputError();\n            });\n        })();\n    <\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Calculator voor de minimale diameter van een kraanschijf <br>Formule<\/h2>\n\n\n\n<p>D<sub>2<\/sub>\u2265h<sub>2<\/sub>\u00d7t\u00d7d<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>D<sub>2<\/sub>: Minimale steekcirkeldiameter van de schijf<\/li>\n\n\n\n<li>H<sub>2<\/sub>: Selectiefactor voor de katrol (verhouding van de steekcirkeldiameter van de katrol tot de nominale waarde) <br>diameter van de staalkabel)<\/li>\n\n\n\n<li>t: Factor voor het type staalkabel<\/li>\n\n\n\n<li>d: Nominale diameter van de staalkabel<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Notities<\/h2>\n\n\n\n<p>De selectieco\u00ebffici\u00ebnten voor katrollen en balanskatrollen verschillen afhankelijk van de <br>Het type kraan en de berekeningen moeten worden uitgevoerd op basis van de specifieke omstandigheden:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bij hijs- en giekhef-\/flipping-staalkabels die in algemene kranen en takels worden gebruikt, is buigvermoeidheid vaak de voornaamste vorm van schade aan de staalkabel wanneer enkelvoudige wikkeling wordt toegepast. De bovenstaande co\u00ebffici\u00ebnten worden met name aanbevolen om de radiale druk op de staalkabel in de in- en uitgangen te beperken.<\/li>\n\n\n\n<li>Voor mobiele kranen worden de bovenstaande co\u00ebffici\u00ebnten met name aanbevolen wanneer enkellaags wikkeling wordt toegepast om de radiale druk op het apparaat te beperken en de weerstand tegen buigvermoeidheid te verhogen.<\/li>\n\n\n\n<li>Voor mobiele kranen worden de bovenstaande co\u00ebffici\u00ebnten met name aanbevolen wanneer meerlaagse wikkeling wordt toegepast om de radiale druk op de staalkabel in overlappende gebieden en het daaruit voortvloeiende torsie-effect van de staalkabel te beperken.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Toepasselijke kranen<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Bovenloopkranen<\/li>\n\n\n\n<li>Takels - staalkabel<\/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>Vrijdragende kranen (kolom-, zwenk-, wand- of loopkranen)<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Deze calculator voor de minimale steekdiameter van kraanschijven voldoet strikt aan ISO 16625:2013 en berekent snel de minimale steekdiameter van de schijf op basis van de nominale diameter van de staalkabel en de werkklasse van het mechanisme. Ondergedimensioneerde schijven vergroten het risico op kabelontwrichting en andere veiligheidsrisico&#39;s, terwijl te grote schijven de hijshoogte en het laadvermogen beperken. De calculator controleert de naleving van de norm, optimaliseert de schijfselectie, voorspelt de levensduur van de staalkabel, verlaagt de onderhoudskosten, voorkomt stilstand en verbetert de operationele veiligheid en effici\u00ebntie.","protected":false},"author":8,"featured_media":17090,"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-17088","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\/17088"}],"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=17088"}],"version-history":[{"count":6,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/posts\/17088\/revisions"}],"predecessor-version":[{"id":17101,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/posts\/17088\/revisions\/17101"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/media\/17090"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/media?parent=17088"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/categories?post=17088"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/nl\/wp-json\/wp\/v2\/tags?post=17088"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}