{"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\/bn\/crane-sheave-minimum-diameter-calculator\/","title":{"rendered":"\u0995\u09cd\u09b0\u09c7\u09a8 \u09b6\u09bf\u09ad\u09c7\u09b0 \u09a8\u09cd\u09af\u09c2\u09a8\u09a4\u09ae \u09ac\u09cd\u09af\u09be\u09b8 \u0995\u09cd\u09af\u09be\u09b2\u0995\u09c1\u09b2\u09c7\u099f\u09b0"},"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\">\u0995\u09cd\u09b0\u09c7\u09a8 \u09b6\u09bf\u09ad\u09c7\u09b0 \u09a8\u09cd\u09af\u09c2\u09a8\u09a4\u09ae \u09ac\u09cd\u09af\u09be\u09b8 \u0995\u09cd\u09af\u09be\u09b2\u0995\u09c1\u09b2\u09c7\u099f\u09b0<\/h3>\n\n    <!-- Crane Type -->\n    <div class=\"calc-row\">\n        <label for=\"calculator-craneType\">\u0995\u09cd\u09b0\u09c7\u09a8\u09c7\u09b0 \u09a7\u09b0\u09a3<\/label>\n        <select id=\"calculator-craneType\">\n            <option value=\"normal\">\u0993\u09ad\u09be\u09b0\u09b9\u09c7\u09a1 \u099f\u09cd\u09b0\u09cd\u09af\u09be\u09ad\u09c7\u09b2\u09bf\u0982 \u0995\u09cd\u09b0\u09c7\u09a8<\/option>\n            <option value=\"normal\">\u09aa\u09cb\u09b0\u09cd\u099f\u09be\u09b2 \u09ac\u09be \u0986\u09a7\u09be-\u09aa\u09cb\u09b0\u09cd\u099f\u09be\u09b2 \u0995\u09cd\u09b0\u09c7\u09a8<\/option>\n            <option value=\"normal\">\u09aa\u09cb\u09b0\u09cd\u099f\u09be\u09b2 \u09ac\u09be \u0986\u09a7\u09be-\u09aa\u09cb\u09b0\u09cd\u099f\u09be\u09b2 \u09b8\u09c7\u09a4\u09c1 \u0995\u09cd\u09b0\u09c7\u09a8<\/option>\n            <option value=\"normal\">\u0995\u09cd\u09af\u09be\u09a8\u09cd\u099f\u09bf\u09b2\u09bf\u09ad\u09be\u09b0 \u0995\u09cd\u09b0\u09c7\u09a8 (\u09aa\u09bf\u09b2\u09be\u09b0, \u099c\u09bf\u09ac, \u0993\u09af\u09bc\u09be\u09b2 \u09ac\u09be \u0993\u09af\u09bc\u09be\u0995\u09bf\u0982)<\/option>\n            <option value=\"mobile\">\u09ae\u09cb\u09ac\u09be\u0987\u09b2 \u0995\u09cd\u09b0\u09c7\u09a8<\/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\">\u09a1\u09bf\u0989\u099f\u09bf \u0995\u09cd\u09b2\u09be\u09b8 (\u0986\u0987\u098f\u09b8\u0993 \u09ea\u09e9\u09e6\u09e7-\u09e7)<\/label>\n            <select id=\"calculator-normalDuty\">\n                <option value=\"M1\">\u098f\u09ae\u09e7<\/option>\n                <option value=\"M2\">\u098f\u09ae\u09e8<\/option>\n                <option value=\"M3\">\u098f\u09ae\u09e9<\/option>\n                <option value=\"M4\">M4<\/option>\n                <option value=\"M5\">\u098f\u09ae\u09eb<\/option>\n                <option value=\"M6\">M6<\/option>\n                <option value=\"M7\">M7<\/option>\n                <option value=\"M8\">\u098f\u09ae\u09ee<\/option>\n            <\/select>\n        <\/div>\n        <div class=\"calc-row\">\n            <label for=\"calculator-normalType\">\u09b6\u09bf\u09ad \u09ac\u09bf\u09ad\u09be\u0997<\/label>\n            <select id=\"calculator-normalType\">\n                <option value=\"main\">\u09aa\u09cd\u09b0\u09a7\u09be\u09a8 \u0995\u09be\u09b0\u09cd\u09af\u0995\u09be\u09b0\u09c0 \u09b6\u09c0\u09ac (h\u2082)<\/option>\n                <option value=\"balance\">\u09ad\u09be\u09b0\u09b8\u09be\u09ae\u09cd\u09af \u09b6\u09bf\u09ad (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\">\u09b6\u09bf\u09ad \u09ac\u09bf\u09ad\u09be\u0997<\/label>\n            <select id=\"calculator-mobileCat\">\n                <option value=\"h2\">\u09aa\u09cd\u09b0\u09a7\u09be\u09a8 \u0995\u09be\u09b0\u09cd\u09af\u0995\u09be\u09b0\u09c0 \u09b6\u09c0\u09ac (h\u2082)<\/option>\n                <option value=\"h3\">\u09ad\u09be\u09b0\u09b8\u09be\u09ae\u09cd\u09af \u09b6\u09bf\u09ad (h\u2083)<\/option>\n            <\/select>\n        <\/div>\n        <div class=\"calc-row\">\n            <label for=\"calculator-mobileSelect\">\u09aa\u09cd\u09b0\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09be \u09aa\u09cd\u09b0\u0995\u09be\u09b0<\/label>\n            <select id=\"calculator-mobileSelect\">\n                <option value=\"lift\">\u0989\u09a4\u09cd\u09a4\u09cb\u09b2\u09a8 \u09aa\u09cd\u09b0\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09be<\/option>\n                <option value=\"jib\">\u099c\u09bf\u09ac \/ \u09b2\u09be\u09ab\u09bf\u0982 \u09aa\u09cd\u09b0\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09be<\/option>\n                <option value=\"telescope\">\u099f\u09c7\u09b2\u09bf\u09b8\u09cd\u0995\u09cb\u09aa \u09aa\u09cd\u09b0\u0995\u09cd\u09b0\u09bf\u09af\u09bc\u09be<\/option>\n            <\/select>\n        <\/div>\n        <div class=\"calc-row\">\n            <label for=\"calculator-ropeType\">\u09a6\u09a1\u09bc\u09bf\u09b0 \u09a7\u09b0\u09a8<\/label>\n            <select id=\"calculator-ropeType\">\n                <option value=\"std\">\u09b8\u09cd\u099f\u09cd\u09af\u09be\u09a8\u09cd\u09a1\u09be\u09b0\u09cd\u09a1 \u09a6\u09a1\u09bc\u09bf<\/option>\n                <option value=\"anti\">\u0998\u09c2\u09b0\u09cd\u09a3\u09a8 \u09aa\u09cd\u09b0\u09a4\u09bf\u09b0\u09cb\u09a7\u09c0 \u09a6\u09a1\u09bc\u09bf<\/option>\n            <\/select>\n        <\/div>\n    <\/div>\n\n    <!-- Rope Strand Coefficient t -->\n    <div class=\"calc-row\">\n        <label for=\"calculator-ropeT\">\u09a6\u09a1\u09bc\u09bf\u09b0 \u09b8\u09cd\u099f\u09cd\u09b0\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09b8\u09b9\u0997 (t)<\/label>\n        <select id=\"calculator-ropeT\">\n            <option value=\"1.25\">\u09e9\u099f\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09cd\u09af\u09be\u09a8\u09cd\u09a1 (t=\u09e7.\u09e8\u09eb)<\/option>\n            <option value=\"1.15\">\u09ea~\u09eb\u099f\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09cd\u09af\u09be\u09a8\u09cd\u09a1 (t=\u09e7.\u09e7\u09eb)<\/option>\n            <option value=\"1.00\">\u09ec~\u09e7\u09e6\u099f\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09cd\u09af\u09be\u09a8\u09cd\u09a1 (t=\u09e7.\u09e6\u09e6)<\/option>\n            <option value=\"0.95\">\u09ee~\u09e7\u09e6\u099f\u09bf \u09b8\u09cd\u099f\u09cd\u09b0\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u09aa\u09cd\u09b2\u09be\u09b8\u09cd\u099f\u09bf\u0995 \u09a6\u09cd\u09ac\u09be\u09b0\u09be \u09aa\u09c2\u09b0\u09cd\u09a3 (t=\u09e6.\u09ef\u09eb)<\/option>\n            <option value=\"1.00\">\u09e7\u09e6+ \u09b8\u09cd\u099f\u09cd\u09b0\u09cd\u09af\u09be\u09a8\u09cd\u09a1 \u0998\u09c2\u09b0\u09cd\u09a3\u09a8 \u09aa\u09cd\u09b0\u09a4\u09bf\u09b0\u09cb\u09a7\u09c0 (t=1.00)<\/option>\n        <\/select>\n    <\/div>\n\n    <!-- Wire Rope Diameter d -->\n    <div class=\"calc-row\">\n        <label for=\"calculator-ropeD\">\u09a4\u09be\u09b0\u09c7\u09b0 \u09a6\u09a1\u09bc\u09bf\u09b0 \u09ac\u09cd\u09af\u09be\u09b8 d (\u09ae\u09bf\u09ae\u09bf)<\/label>\n        <input type=\"number\" id=\"calculator-ropeD\" placeholder=\"\u09ac\u09cd\u09af\u09be\u09b8 \u09aa\u09cd\u09b0\u09ac\u09c7\u09b6 \u0995\u09b0\u09be\u09a8\">\n        <div class=\"error-msg\" id=\"calculator-dErr\">\u0985\u09a8\u09c1\u0997\u09cd\u09b0\u09b9 \u0995\u09b0\u09c7 \u09e6-\u098f\u09b0 \u09ac\u09c7\u09b6\u09bf \u098f\u0995\u099f\u09bf \u09ac\u09c8\u09a7 \u09ac\u09cd\u09af\u09be\u09b8 \u09b2\u09bf\u0996\u09c1\u09a8\u0964<\/div>\n    <\/div>\n\n    <!-- Buttons -->\n    <div class=\"btn-group\">\n        <button id=\"calculator-btnCalc\">\u0997\u09a3\u09a8\u09be \u0995\u09b0\u09c1\u09a8<\/button>\n        <button id=\"calculator-btnReset\">\u09b0\u09bf\u09b8\u09c7\u099f<\/button>\n    <\/div>\n\n    <!-- Result -->\n    <div class=\"result-wrap\">\n        <div class=\"result-text\" id=\"calculator-resultBox\">\u09ab\u09b2\u09be\u09ab\u09b2 \u098f\u0996\u09be\u09a8\u09c7 \u09aa\u09cd\u09b0\u09a6\u09b0\u09cd\u09b6\u09bf\u09a4 \u09b9\u09ac\u09c7<\/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                           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