{"id":17406,"date":"2026-10-12T02:08:27","date_gmt":"2026-10-12T02:08:27","guid":{"rendered":"https:\/\/www.dgcrane.com\/?p=17406"},"modified":"2026-10-12T02:08:31","modified_gmt":"2026-10-12T02:08:31","slug":"crane-wire-rope-diameter-selection-tool","status":"publish","type":"post","link":"https:\/\/www.dgcrane.com\/cs\/crane-wire-rope-diameter-selection-tool\/","title":{"rendered":"N\u00e1stroj pro v\u00fdb\u011br pr\u016fm\u011bru je\u0159\u00e1bov\u00e9ho lana"},"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\n      width: 100%;\n      max-width: 545px;\n      margin: 20px auto;\n      padding: 30px;\n      box-sizing: border-box;\n      background: var(--bg-color);\n      color: var(--text-color);\n      font-family: Arial, \"Microsoft YaHei\", sans-serif;\n      font-size: 14px;\n      line-height: 1.4;\n    }\n    #calculator * ,\n    #calculator *::before,\n    #calculator *::after {\n      box-sizing: border-box;\n    }\n    #calculator h2 {\n      margin: 0 0 18px;\n      font-size: 20px;\n      color: #222;\n      font-weight: 700;\n    }\n    #calculator .form-group {\n      margin-bottom: 14px;\n      display: flex;\n      flex-direction: column;\n    }\n    #calculator label {\n      margin-bottom: 5px;\n      font-size: 14px;\n      font-weight: 600;\n      color: #222;\n    }\n    #calculator input[type=\"number\"],\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      background: #ffffff;\n      outline: none;\n      transition: border-color 0.2s ease, border-width 0.2s ease;\n    }\n    #calculator input:focus,\n    #calculator select:focus {\n      border-color: var(--primary-color);\n      border-width: 2px;\n    }\n    #calculator input.error,\n    #calculator select.error {\n      border-color: var(--error-color);\n      border-width: 2px;\n    }\n    #calculator .error-msg {\n      margin-top: 4px;\n      font-size: 12px;\n      color: var(--error-color);\n      display: none;\n    }\n    #calculator .tool-link {\n      margin-top: 8px;\n      font-size: 13px;\n    }\n    #calculator .tool-link a {\n      color: var(--primary-color);\n      text-decoration: none;\n      display: inline-block;\n    }\n    #calculator .tool-link a:hover {\n      text-decoration: underline;\n    }\n    #calculator .button-group {\n      display: flex;\n      gap: 12px;\n      margin: 18px 0;\n    }\n    #calculator button {\n      height: 34px;\n      line-height: 34px;\n      padding: 0 22px;\n      border-radius: 0;\n      border: none;\n      font-size: 14px;\n      cursor: pointer;\n      transition: background 0.2s ease;\n    }\n    #calculator .btn-primary {\n      background: var(--primary-color);\n      color: #ffffff;\n    }\n    #calculator .btn-primary:hover {\n      background: var(--primary-hover);\n    }\n    #calculator .btn-secondary {\n      background: #ffffff;\n      color: var(--text-color);\n      border: 1px solid #ccc;\n    }\n    #calculator .btn-secondary:hover {\n      background: #f5f5f5;\n    }\n    #calculator .result-box {\n      padding: 16px;\n      background: #ffffff;\n      border: 1px solid #d0d7e2;\n    }\n    #calculator .result-label {\n      font-size: 14px;\n      margin-bottom: 4px;\n    }\n    #calculator .result-value {\n      font-size: 40px;\n      font-weight: 700;\n      color: var(--primary-color);\n      margin: 4px 0 12px;\n      line-height: 1.2;\n    }\n    #calculator .result-subvalue {\n      font-size: 16px;\n      font-weight: 600;\n      margin-bottom: 8px;\n    }\n    #calculator .result-status {\n      font-size: 14px;\n      font-weight: 500;\n    }\n    #calculator .result-status.pass {\n      color: #007733;\n      font-weight: 600;\n    }\n    #calculator .result-status.fail {\n      color: var(--error-color);\n      font-weight: 600;\n    }\n\n    @media (max-width: 768px) {\n      #calculator {\n        padding: 20px;\n      }\n      #calculator input[type=\"number\"],\n      #calculator select {\n        height: 0.7rem;\n        font-size: 0.28rem;\n      }\n      #calculator label,\n      #calculator button,\n      #calculator .result-label,\n      #calculator .result-status {\n        font-size: 0.28rem;\n      }\n      #calculator .result-value {\n        font-size: 0.6rem;\n      }\n      #calculator .button-group {\n        flex-direction: column;\n        gap: 10px;\n      }\n      #calculator .button-group button {\n        width: 100%;\n        height: 0.7rem;\n        line-height: 0.7rem;\n      }\n    }\n  <\/style>\n\n\n  <div class=\"form-group\">\n    <label for=\"calculator-breakingForce\">Po\u017eadovan\u00e1 minim\u00e1ln\u00ed s\u00edla p\u0159i p\u0159etr\u017een\u00ed (kN)<\/label>\n    <input type=\"number\" id=\"calculator-breakingForce\" step=\"0.01\" min=\"0\" placeholder=\"nap\u0159. 120\">\n    <div class=\"error-msg\" id=\"calculator-breakingForce-error\"><\/div>\n    <div class=\"tool-link\">\n      <a href=\"https:\/\/www.dgcrane.com\/cs\/crane-wire-rope-minimum-breaking-load-calculator\/\" target=\"_blank\" rel=\"noopener noreferrer\">\n        \u2192 Kalkula\u010dka minim\u00e1ln\u00ed pevnosti v tahu pro je\u0159\u00e1bov\u00e1 lana\n      <\/a>\n    <\/div>\n  <\/div>\n\n  <div class=\"form-group\">\n    <label for=\"calculator-construction\">Konstrukce lan<\/label>\n    <select id=\"calculator-construction\">\n      <optgroup label=\"6\u00d77 Series\">\n        <option value=\"6x7\">6\u00d77<\/option>\n        <option value=\"6x9W\">6\u00d79W<\/option>\n      <\/optgroup>\n      <optgroup label=\"6\u00d719 Series\">\n        <option value=\"6x19S\">6\u00d719S<\/option>\n        <option value=\"6x19W\" selected>6\u00d719W<\/option>\n        <option value=\"6x25Fi\">6\u00d725Fi<\/option>\n      <\/optgroup>\n      <optgroup label=\"6\u00d737 Series\">\n        <option value=\"6x25Fi\">6\u00d725Fi<\/option>\n        <option value=\"6x26WS\">6\u00d726WS<\/option>\n        <option value=\"6x29Fi\">6\u00d729Fi<\/option>\n      <\/optgroup>\n      <optgroup label=\"8\u00d719 Series\">\n        <option value=\"8x19S\">8\u00d719S<\/option>\n        <option value=\"8x19W\">8\u00d719W<\/option>\n        <option value=\"8x25Fi\">8\u00d725Fi<\/option>\n      <\/optgroup>\n      <optgroup label=\"8\u00d737 Series\">\n        <option value=\"8x25Fi\">8\u00d725Fi<\/option>\n        <option value=\"8x26WS\">8\u00d726WS<\/option>\n        <option value=\"8x31WS\">8\u00d731WS<\/option>\n      <\/optgroup>\n      <optgroup label=\"18\u00d77 \/ 18\u00d719 Series\">\n        <option value=\"17x7\">17\u00d77<\/option>\n        <option value=\"18x7\">18\u00d77<\/option>\n        <option value=\"18x19S\">18\u00d719S<\/option>\n      <\/optgroup>\n      <optgroup label=\"35W\u00d77 Compacted Series\">\n        <option value=\"35Wx7\">35W\u00d77<\/option>\n        <option value=\"24Wx7\">24W\u00d77<\/option>\n      <\/optgroup>\n      <optgroup label=\"6VX V-shaped Strand Series\">\n        <option value=\"6vx18\">6VX18<\/option>\n        <option value=\"6vx19\">6VX19<\/option>\n        <option value=\"6vx21\">6VX21<\/option>\n      <\/optgroup>\n      <optgroup label=\"6VX37 V-shaped Strand Series\">\n        <option value=\"6vx34\">6VX34<\/option>\n        <option value=\"6vx37\">6VX37<\/option>\n        <option value=\"6vx37S\">6VX37S<\/option>\n      <\/optgroup>\n      <optgroup label=\"4VX Fan-shaped Strand Series\">\n        <option value=\"4vx39S\">4VX39S<\/option>\n        <option value=\"4vx48S\">4VX48S<\/option>\n      <\/optgroup>\n      <optgroup label=\"6QX+6VX Compound Series\">\n        <option value=\"6qx19+6vx21\">6QX19 + 6VX21<\/option>\n        <option value=\"6qx33+6vx21\">6QX33 + 6VX21<\/option>\n      <\/optgroup>\n    <\/select>\n  <\/div>\n\n  <div class=\"form-group\">\n    <label for=\"calculator-core\">Typ j\u00e1dra<\/label>\n    <select id=\"calculator-core\">\n      <option value=\"FC\" selected>Vl\u00e1knov\u00e9 j\u00e1dro (FC)<\/option>\n      <option value=\"IWR\">Ocelov\u00e9 j\u00e1dro (IWR \/ IWS)<\/option>\n    <\/select>\n  <\/div>\n\n  <div class=\"form-group\">\n    <label for=\"calculator-tensile\">Jmenovit\u00e1 pevnost v tahu (MPa)<\/label>\n    <select id=\"calculator-tensile\">\n      <option value=\"1570\">1570<\/option>\n      <option value=\"1670\">1670<\/option>\n      <option value=\"1770\" selected>1770<\/option>\n      <option value=\"1870\">1870<\/option>\n      <option value=\"1960\">1960<\/option>\n    <\/select>\n  <\/div>\n\n  <div class=\"button-group\">\n    <button type=\"button\" id=\"calculator-calculate\" class=\"btn-primary\">Vypo\u010d\u00edtat<\/button>\n    <button type=\"button\" id=\"calculator-reset\" class=\"btn-secondary\">Obnovit<\/button>\n  <\/div>\n\n  <div class=\"result-box\">\n    <div class=\"result-label\">Doporu\u010den\u00fd minim\u00e1ln\u00ed jmenovit\u00fd pr\u016fm\u011br:<\/div>\n    <div class=\"result-value\" id=\"calculator-resultDiameter\">\u2013 mm<\/div>\n    <div class=\"result-label\">Odpov\u00eddaj\u00edc\u00ed standardn\u00ed mezn\u00ed s\u00edla:<\/div>\n    <div class=\"result-subvalue\" id=\"calculator-resultForce\">\u2013 kN<\/div>\n    <div class=\"result-status\" id=\"calculator-resultStatus\"><\/div>\n  <\/div>\n\n  <script>\n    (function () {\n      \/\/ ========== Dataset (GB 8918-2006, top 3 structures per class) ==========\n      const ropeDatabase = {\n        \/\/ 6\u00d77 Series\n        \"6x7+FC\": {\n          1570: {8:33.4, 10:52.1, 12:75.1, 14:102, 16:133, 18:169, 20:208, 22:252, 24:300, 26:352, 28:409, 30:469, 32:534, 36:676},\n          1670: {8:35.5, 10:55.4, 12:79.8, 14:110, 16:144, 18:183, 20:225, 22:273, 24:325, 26:381, 28:442, 30:507, 32:577, 36:730},\n          1770: {8:37.6, 10:58.8, 12:84.6, 14:115, 16:153, 18:194, 20:240, 22:290, 24:345, 26:405, 28:470, 30:540, 32:614, 36:777},\n          1870: {8:39.7, 10:62.1, 12:89.4, 14:122, 16:163, 18:206, 20:254, 22:308, 24:358, 26:420, 28:487, 30:559, 32:636, 36:805},\n          1960: {8:43.0, 10:67.1, 12:96.7, 14:132, 16:172, 18:218, 20:269, 22:325, 24:387, 26:454, 28:526, 30:604, 32:687, 36:870}\n        },\n        \"6x7+IWR\": {\n          1570: {8:36.1, 10:56.4, 12:81.2, 14:110, 16:144, 18:180, 20:222, 22:268, 24:319, 26:375, 28:435, 30:499, 32:568, 36:719},\n          1670: {8:38.4, 10:60.0, 12:86.3, 14:118, 16:153, 18:194, 20:240, 22:290, 24:345, 26:405, 28:470, 30:540, 32:614, 36:779},\n          1770: {8:40.7, 10:63.5, 12:91.5, 14:125, 16:163, 18:206, 20:254, 22:308, 24:366, 26:430, 28:498, 30:572, 32:651, 36:824},\n          1870: {8:43.0, 10:67.1, 12:96.7, 14:132, 16:172, 18:218, 20:269, 22:325, 24:387, 26:454, 28:526, 30:604, 32:687, 36:912},\n          1960: {8:45.0, 10:70.4, 12:101, 14:138, 16:180, 18:228, 20:281, 22:341, 24:405, 26:476, 28:552, 30:633, 32:721, 36:912}\n        },\n        \"6x9W+FC\": {\n          1570: {14:102, 16:133, 18:169, 20:208, 22:252, 24:300, 26:352, 28:409, 30:469, 32:534, 36:676},\n          1670: {14:110, 16:144, 18:183, 20:225, 22:273, 24:325, 26:381, 28:442, 30:507, 32:577, 36:730},\n          1770: {14:118, 16:153, 18:194, 20:240, 22:290, 24:345, 26:405, 28:470, 30:540, 32:614, 36:777},\n          1870: {14:125, 16:163, 18:206, 20:254, 22:308, 24:358, 26:420, 28:487, 30:559, 32:636, 36:805},\n          1960: {14:132, 16:172, 18:218, 20:269, 22:325, 24:387, 26:454, 28:526, 30:604, 32:687, 36:870}\n        },\n\n        \/\/ 6\u00d719 Series\n        \"6x19S+FC\": {\n          1570: {12:75.1, 14:102, 16:133, 18:168, 20:207, 22:251, 24:298, 26:350, 28:406, 30:466, 32:531, 36:671},\n          1670: {12:79.8, 14:110, 16:143, 18:181, 20:224, 22:271, 24:322, 26:378, 28:438, 30:503, 32:572, 36:724},\n          1770: {12:84.6, 14:117, 16:152, 18:193, 20:238, 22:288, 24:342, 26:402, 28:466, 30:535, 32:609, 36:770},\n          1870: {12:89.4, 14:124, 16:161, 18:204, 20:252, 22:304, 24:363, 26:426, 28:494, 30:567, 32:645, 36:817},\n          1960: {12:94.0, 14:130, 16:170, 18:216, 20:266, 22:322, 24:383, 26:450, 28:522, 30:599, 32:682, 36:863}\n        },\n        \"6x19W+FC\": {\n          1570: {12:75.1, 14:102, 16:133, 18:168, 20:207, 22:251, 24:298, 26:350, 28:406, 30:466, 32:531, 36:671, 40:829},\n          1670: {12:79.8, 14:110, 16:143, 18:181, 20:224, 22:271, 24:322, 26:378, 28:438, 30:503, 32:572, 36:724, 40:894},\n          1770: {12:84.6, 14:117, 16:152, 18:193, 20:238, 22:288, 24:342, 26:402, 28:466, 30:535, 32:609, 36:770, 40:951},\n          1870: {12:89.4, 14:124, 16:161, 18:204, 20:252, 22:304, 24:363, 26:426, 28:494, 30:567, 32:645, 36:817, 40:1010},\n          1960: {12:94.0, 14:130, 16:170, 18:216, 20:266, 22:322, 24:383, 26:450, 28:522, 30:599, 32:682, 36:863, 40:1070}\n        },\n        \"6x25Fi+FC\": {\n          1570: {12:74.6, 14:102, 16:133, 18:168, 20:207, 22:251, 24:298, 26:350, 28:406, 30:466, 32:531, 36:671},\n          1670: {12:80.5, 14:110, 16:143, 18:181, 20:224, 22:271, 24:322, 26:378, 28:438, 30:503, 32:572, 36:724},\n          1770: {12:85.6, 14:117, 16:152, 18:193, 20:238, 22:288, 24:342, 26:402, 28:466, 30:535, 32:609, 36:770},\n          1870: {12:90.7, 14:124, 16:161, 18:204, 20:252, 22:304, 24:363, 26:426, 28:494, 30:567, 32:645, 36:817},\n          1960: {12:95.9, 14:131, 16:170, 18:216, 20:266, 22:322, 24:383, 26:450, 28:522, 30:599, 32:682, 36:863}\n        },\n\n        \/\/ 8\u00d719 Series\n        \"8x19S+FC\": {\n          1570: {18:149, 20:184, 22:223, 24:265, 26:311, 28:361, 30:414, 32:471, 36:596, 40:736},\n          1670: {18:159, 20:196, 22:237, 24:282, 26:331, 28:384, 30:440, 32:501, 36:634, 40:783},\n          1770: {18:176, 20:217, 22:263, 24:313, 26:367, 28:426, 30:489, 32:556, 36:704, 40:869},\n          1870: {18:187, 20:231, 22:280, 24:333, 26:391, 28:453, 30:520, 32:592, 36:749, 40:925},\n          1960: {18:198, 20:245, 22:296, 24:353, 26:414, 28:480, 30:551, 32:627, 36:794, 40:980}\n        },\n        \"8x19W+FC\": {\n          1570: {18:149, 20:184, 22:223, 24:265, 26:311, 28:361, 30:414, 32:471, 36:596, 40:736},\n          1670: {18:159, 20:196, 22:237, 24:282, 26:331, 28:384, 30:440, 32:501, 36:634, 40:783},\n          1770: {18:176, 20:217, 22:263, 24:313, 26:367, 28:426, 30:489, 32:556, 36:704, 40:869},\n          1870: {18:187, 20:231, 22:280, 24:333, 26:391, 28:453, 30:520, 32:592, 36:749, 40:925},\n          1960: {18:198, 20:245, 22:296, 24:353, 26:414, 28:480, 30:551, 32:627, 36:794, 40:980}\n        },\n        \"8x25Fi+FC\": {\n          1570: {16:91.4, 18:116, 20:143, 22:173, 24:206, 26:241, 28:280, 30:321, 32:366, 36:463, 40:571},\n          1670: {16:98.5, 18:125, 20:155, 22:188, 24:223, 26:261, 28:303, 30:347, 32:396, 36:500, 40:616},\n          1770: {16:106, 18:134, 20:166, 22:202, 24:240, 26:281, 28:326, 30:374, 32:427, 36:540, 40:664},\n          1870: {16:113, 18:143, 20:177, 22:216, 24:257, 26:300, 28:348, 30:399, 32:456, 36:577, 40:709},\n          1960: {16:120, 18:152, 20:188, 22:230, 24:273, 26:319, 28:370, 30:424, 32:485, 36:614, 40:755}\n        },\n\n        \/\/ 18\u00d77 Series\n        \"17x7+FC\": {\n          1570: {12:56.2, 14:76.4, 16:99.8, 18:126, 20:156, 22:189, 24:225, 26:264, 28:306, 30:351, 32:399, 36:505, 40:624},\n          1670: {12:61.9, 14:84.3, 16:110, 18:139, 20:172, 22:208, 24:248, 26:291, 28:337, 30:387, 32:440, 36:557, 40:688},\n          1770: {12:70.1, 14:95.4, 16:125, 18:158, 20:195, 22:236, 24:280, 26:329, 28:382, 30:438, 32:498, 36:631, 40:779},\n          1870: {12:74.5, 14:101, 16:132, 18:167, 20:206, 22:249, 24:297, 26:348, 28:404, 30:463, 32:527, 36:667, 40:824},\n          1960: {12:78.9, 14:107, 16:140, 18:177, 20:219, 22:265, 24:316, 26:370, 28:429, 30:493, 32:561, 36:710, 40:876}\n        },\n        \"18x7+FC\": {\n          1570: {12:56.2, 14:76.4, 16:99.8, 18:126, 20:156, 22:189, 24:225, 26:264, 28:306, 30:351, 32:399, 36:505, 40:624},\n          1670: {12:61.9, 14:84.3, 16:110, 18:139, 20:172, 22:208, 24:248, 26:291, 28:337, 30:387, 32:440, 36:557, 40:688},\n          1770: {12:70.1, 14:95.4, 16:125, 18:158, 20:195, 22:236, 24:280, 26:329, 28:382, 30:438, 32:498, 36:631, 40:779},\n          1870: {12:74.5, 14:101, 16:132, 18:167, 20:206, 22:249, 24:297, 26:348, 28:404, 30:463, 32:527, 36:667, 40:824},\n          1960: {12:78.9, 14:107, 16:140, 18:177, 20:219, 22:265, 24:316, 26:370, 28:429, 30:493, 32:561, 36:710, 40:876}\n        },\n        \"18x19S+FC\": {\n          1570: {24:225, 26:264, 28:306, 30:351, 32:399, 36:505, 40:624, 44:755, 48:899, 52:1050, 56:1220, 60:1400},\n          1670: {24:248, 26:291, 28:337, 30:387, 32:440, 36:557, 40:688, 44:832, 48:991, 52:1160, 56:1350, 60:1550},\n          1770: {24:280, 26:329, 28:382, 30:438, 32:498, 36:631, 40:779, 44:942, 48:1120, 52:1320, 56:1530, 60:1750},\n          1870: {24:297, 26:348, 28:404, 30:463, 32:527, 36:667, 40:824, 44:997, 48:1190, 52:1390, 56:1610, 60:1850},\n          1960: {24:316, 26:370, 28:429, 30:493, 32:561, 36:710, 40:876, 44:1060, 48:1260, 52:1480, 56:1720, 60:1970}\n        },\n\n        \/\/ V-strand 6VX Series\n        \"6vx18+FC\": {\n          1570: {20:203, 22:246, 24:293, 26:344, 28:399, 30:458, 32:521, 34:588, 36:659},\n          1670: {20:216, 22:261, 24:311, 26:365, 28:423, 30:486, 32:553, 34:624, 36:700},\n          1770: {20:230, 22:278, 24:331, 26:388, 28:450, 30:517, 32:588, 34:664, 36:744},\n          1870: {20:243, 22:295, 24:351, 26:411, 28:477, 30:548, 32:623, 34:703, 36:789},\n          1960: {20:257, 22:311, 24:370, 26:435, 28:504, 30:579, 32:658, 34:743, 36:833}\n        },\n        \"6vx19+FC\": {\n          1570: {20:203, 22:246, 24:293, 26:344, 28:399, 30:458, 32:521, 34:588, 36:659},\n          1670: {20:216, 22:261, 24:311, 26:365, 28:423, 30:486, 32:553, 34:624, 36:700},\n          1770: {20:230, 22:278, 24:331, 26:388, 28:450, 30:517, 32:588, 34:664, 36:744},\n          1870: {20:243, 22:295, 24:351, 26:411, 28:477, 30:548, 32:623, 34:703, 36:789},\n          1960: {20:257, 22:311, 24:370, 26:435, 28:504, 30:579, 32:658, 34:743, 36:833}\n        },\n        \"6vx21+FC\": {\n          1570: {18:162, 20:203, 22:246, 24:293, 26:344, 28:399, 30:458, 32:521, 34:588, 36:659},\n          1670: {18:174, 20:216, 22:261, 24:311, 26:365, 28:423, 30:486, 32:553, 34:624, 36:700},\n          1770: {18:185, 20:230, 22:278, 24:331, 26:388, 28:450, 30:517, 32:588, 34:664, 36:744},\n          1870: {18:196, 20:243, 22:295, 24:351, 26:411, 28:477, 30:548, 32:623, 34:703, 36:789},\n          1960: {18:207, 20:257, 22:311, 24:370, 26:435, 28:504, 30:579, 32:658, 34:743, 36:833}\n        }\n      };\n\n      \/\/ ========== DOM Elements ==========\n      const inputF0 = document.getElementById('calculator-breakingForce');\n      const errorF0 = document.getElementById('calculator-breakingForce-error');\n      const selectConstruction = document.getElementById('calculator-construction');\n      const selectCore = document.getElementById('calculator-core');\n      const selectTensile = document.getElementById('calculator-tensile');\n      const btnCalculate = document.getElementById('calculator-calculate');\n      const btnReset = document.getElementById('calculator-reset');\n      const resultDiameter = document.getElementById('calculator-resultDiameter');\n      const resultForce = document.getElementById('calculator-resultForce');\n      const resultStatus = document.getElementById('calculator-resultStatus');\n\n      \/\/ ========== Default Values ==========\n      const defaultValues = {\n        breakingForce: '',\n        construction: '6x19W',\n        core: 'FC',\n        tensile: '1770'\n      };\n\n      \/\/ ========== Core Functions ==========\n      function setError(fieldId, message) {\n        const input = document.getElementById('calculator-' + fieldId);\n        const error = document.getElementById('calculator-' + fieldId + '-error');\n        input.classList.add('error');\n        error.textContent = message;\n        error.style.display = 'block';\n      }\n\n      function clearError(fieldId) {\n        const input = document.getElementById('calculator-' + fieldId);\n        const error = document.getElementById('calculator-' + fieldId + '-error');\n        input.classList.remove('error');\n        error.textContent = '';\n        error.style.display = 'none';\n      }\n\n      function validateInput() {\n        const value = parseFloat(inputF0.value);\n        clearError('breakingForce');\n\n        if (isNaN(value) || value <= 0) {\n          setError('breakingForce', 'Please enter a valid number greater than 0');\n          return false;\n        }\n        return true;\n      }\n\n      function calculateDiameter() {\n        if (!validateInput()) {\n          resultDiameter.textContent = '\u2013 mm';\n          resultForce.textContent = '\u2013 kN';\n          resultStatus.textContent = 'Invalid input';\n          resultStatus.className = 'result-status fail';\n          return;\n        }\n\n        const targetF0 = parseFloat(inputF0.value);\n        const construction = selectConstruction.value;\n        const core = selectCore.value;\n        const tensile = parseInt(selectTensile.value);\n        const dbKey = construction + '+' + core;\n\n        if (!ropeDatabase[dbKey]) {\n          resultDiameter.textContent = '\u2013';\n          resultForce.textContent = '\u2013';\n          resultStatus.textContent = 'This core type is not available for selected construction';\n          resultStatus.className = 'result-status fail';\n          return;\n        }\n\n        const dataSet = ropeDatabase[dbKey][tensile];\n        const diameters = Object.keys(dataSet).map(Number).sort(function (a, b) { return a - b; });\n\n        let matchedDiameter = null;\n        let matchedF0 = null;\n\n        for (let i = 0; i < diameters.length; i++) {\n          const d = diameters[i];\n          if (dataSet[d] >= targetF0) {\n            matchedDiameter = d;\n            matchedF0 = dataSet[d];\n            break;\n          }\n        }\n\n        if (matchedDiameter !== null) {\n          resultDiameter.textContent = matchedDiameter.toFixed(2) + ' mm';\n          resultForce.textContent = matchedF0.toFixed(2) + ' kN';\n          resultStatus.textContent = '\u2713 Meets required breaking force';\n          resultStatus.className = 'result-status pass';\n        } else {\n          const maxD = diameters[diameters.length - 1];\n          const maxF0 = dataSet[maxD];\n          resultDiameter.textContent = 'Out of range';\n          resultForce.textContent = 'Max. ' + maxF0.toFixed(2) + ' kN @ ' + maxD.toFixed(2) + ' mm';\n          resultStatus.textContent = '\u2717 Exceeds maximum available specification';\n          resultStatus.className = 'result-status fail';\n        }\n      }\n\n      function resetCalculator() {\n        inputF0.value = defaultValues.breakingForce;\n        selectConstruction.value = defaultValues.construction;\n        selectCore.value = defaultValues.core;\n        selectTensile.value = defaultValues.tensile;\n        clearError('breakingForce');\n        resultDiameter.textContent = '\u2013 mm';\n        resultForce.textContent = '\u2013 kN';\n        resultStatus.textContent = 'Please input parameters and calculate';\n        resultStatus.className = 'result-status';\n      }\n\n      \/\/ ========== Event Bindings ==========\n      inputF0.addEventListener('input', function () {\n        clearError('breakingForce');\n      });\n\n      btnCalculate.addEventListener('click', calculateDiameter);\n      btnReset.addEventListener('click', resetCalculator);\n\n      \/\/ URL parameter auto-fill\n      const params = new URLSearchParams(window.location.search);\n      if (params.has('f0')) {\n        inputF0.value = params.get('f0');\n      }\n    })();\n  <\/script>\n<\/div>\n\n\n\n<div style=\"height:28px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h2 class=\"wp-block-heading\">N\u00e1vod k pou\u017eit\u00ed<\/h2>\n\n\n\n<h3 class=\"wp-block-heading\">Krok 1: V\u00fdpo\u010det po\u017eadovan\u00e9 minim\u00e1ln\u00ed s\u00edly p\u0159i p\u0159etr\u017een\u00ed<\/h3>\n\n\n\n<p>Klikn\u011bte na odkaz pod vstupn\u00edm polem pro p\u0159echod na <a href=\"https:\/\/www.dgcrane.com\/cs\/crane-wire-rope-minimum-breaking-load-calculator\/\">Kalkula\u010dka minim\u00e1ln\u00edho zat\u00ed\u017een\u00ed pro je\u0159\u00e1bov\u00e9 lana<\/a>Zadejte provozn\u00ed parametry krok za krokem, abyste odvodili minim\u00e1ln\u00ed s\u00edlu pot\u0159ebnou pro va\u0161e provozn\u00ed podm\u00ednky.<\/p>\n\n\n\n<p>Tento krok p\u0159ev\u00e1d\u00ed po\u017eadavky na provozn\u00ed podm\u00ednky \u2013 v\u010detn\u011b jmenovit\u00e9ho zat\u00ed\u017een\u00ed, pom\u011bru kladkostroje a t\u0159\u00eddy zat\u00ed\u017een\u00ed \u2013 na index pevnosti pot\u0159ebn\u00fd pro dimenzov\u00e1n\u00ed ocelov\u00e9ho lana, kter\u00fd slou\u017e\u00ed jako vstupn\u00ed z\u00e1klad pro tento n\u00e1stroj pro v\u00fdb\u011br.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Krok 2: Vyberte a porovnejte jmenovit\u00fd pr\u016fm\u011br ocelov\u00e9ho lana<\/h3>\n\n\n\n<p>Zadejte hodnotu mezn\u00ed s\u00edly z\u00edskanou z p\u0159edchoz\u00edho kroku do vstupn\u00edho pole Po\u017eadovan\u00e1 minim\u00e1ln\u00ed mezn\u00ed s\u00edla a pot\u00e9 postupn\u011b vyberte n\u00e1sleduj\u00edc\u00ed t\u0159i parametry:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Konstrukce lan<\/strong>Vyberte odpov\u00eddaj\u00edc\u00ed strukturu lana podle va\u0161eho konstruk\u010dn\u00edho sch\u00e9matu nebo specifikace origin\u00e1ln\u00edho za\u0159\u00edzen\u00ed (nap\u0159. kulat\u00e9 lanko 6\u00d719W, lanko ve tvaru V 6VX, zhutn\u011bn\u00e9 lanko 35W\u00d77 atd.)<\/li>\n\n\n\n<li><strong>Typ j\u00e1dra<\/strong>Vyberte vl\u00e1knov\u00e9 j\u00e1dro (FC) nebo ocelov\u00e9 j\u00e1dro (IWR\/IWS)<\/li>\n\n\n\n<li><strong>Jmenovit\u00e1 pevnost v tahu<\/strong>Vyberte jmenovit\u00fd stupe\u0148 pevnosti v tahu ocelov\u00e9ho lana<\/li>\n<\/ul>\n\n\n\n<p>Po potvrzen\u00ed parametr\u016f klikn\u011bte na tla\u010d\u00edtko Vypo\u010d\u00edtat. N\u00e1stroj pro v\u00fdb\u011br pr\u016fm\u011bru ocelov\u00e9ho lana je\u0159\u00e1bu automaticky p\u0159i\u0159ad\u00ed nejmen\u0161\u00ed jmenovit\u00fd pr\u016fm\u011br, kter\u00fd spl\u0148uje po\u017eadavek na mezn\u00ed s\u00edlu v <a href=\"https:\/\/www.dgcrane.com\/wp-content\/uploads\/2026\/10\/steel-wire-rope-for-important-purpose.pdf\">GB 8918-2006<\/a> (ekvivalent normy ISO 3154:1988). Zobraz\u00ed tak\u00e9 standardn\u00ed minim\u00e1ln\u00ed mezn\u00ed s\u00edlu cel\u00e9ho lana odpov\u00eddaj\u00edc\u00ed tomuto pr\u016fm\u011bru spolu s v\u00fdsledkem ov\u011b\u0159en\u00ed, kter\u00fd uvede, zda je po\u017eadavek spln\u011bn.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pozn\u00e1mky<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Pr\u016fm\u011br z\u00edskan\u00fd t\u00edmto n\u00e1strojem je teoreticky vypo\u010d\u00edtan\u00e1 hodnota. Pro skute\u010dn\u00e9 po\u0159\u00edzen\u00ed a instalaci ocelov\u00fdch lan na m\u00edst\u011b vyberte nejbli\u017e\u0161\u00ed standardn\u00ed komer\u010dn\u00ed pr\u016fm\u011br.<\/li>\n\n\n\n<li>U ocelov\u00fdch lan ur\u010den\u00fdch pro jin\u00e9 ne\u017e zdvihac\u00ed aplikace, jako jsou statick\u00e1 z\u00e1v\u011bsn\u00e1 lana a kotevn\u00ed lana, se po\u017eadovan\u00e9 bezpe\u010dnostn\u00ed faktory li\u0161\u00ed od faktor\u016f pro zdvihac\u00ed lana. Nepou\u017e\u00edvejte v\u00fdsledky tohoto n\u00e1stroje pro v\u00fdb\u011br ocelov\u00fdch lan p\u0159\u00edmo na takov\u00e9 p\u0159\u00edpady pou\u017eit\u00ed.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\">Pou\u017eiteln\u00e9 produkty<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Mostov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Port\u00e1lov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>V\u00fdlo\u017en\u00edkov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Odl\u00e9vac\u00ed mostov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Kontejnerov\u00e9 port\u00e1lov\u00e9 je\u0159\u00e1by<\/li>\n\n\n\n<li>Elektrick\u00e9 lanov\u00e9 kladkostroje<\/li>\n\n\n\n<li>Elektrick\u00e9 navij\u00e1ky<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"Tento n\u00e1stroj pro v\u00fdb\u011br pr\u016fm\u011bru ocelov\u00e9ho lana je\u0159\u00e1bu automaticky p\u0159i\u0159azuje minim\u00e1ln\u00ed pr\u016fm\u011br ocelov\u00e9ho lana, kter\u00fd spl\u0148uje po\u017eadavky na pevnost v tahu, na z\u00e1klad\u011b minim\u00e1ln\u00ed mezn\u00ed s\u00edly, jmenovit\u00e9 pevnosti v tahu, konstrukce lana a typu j\u00e1dra. Poddimenzovan\u00fd pr\u016fm\u011br vede k nedostate\u010dn\u00e9 mezn\u00ed s\u00edle, co\u017e m\u00e1 za n\u00e1sledek p\u0159etr\u017een\u00ed dr\u00e1tu nebo zlomen\u00ed lana, co\u017e m\u016f\u017ee zp\u016fsobit p\u00e1d b\u0159emene, po\u0161kozen\u00ed za\u0159\u00edzen\u00ed a \u00farazy. Nadm\u011brn\u00fd pr\u016fm\u011br v\u0161ak zvy\u0161uje zat\u00ed\u017een\u00ed bubn\u016f, kladek a zdvihac\u00edch mechanism\u016f, zvy\u0161uje n\u00e1klady na po\u0159\u00edzen\u00ed za\u0159\u00edzen\u00ed a zhor\u0161uje riziko opot\u0159eben\u00ed mechanism\u016f. Tento n\u00e1stroj \u00fa\u010dinn\u011b pom\u00e1h\u00e1 person\u00e1lu pro n\u00e1vrh a po\u0159\u00edzen\u00ed je\u0159\u00e1b\u016f a souvisej\u00edc\u00edmu person\u00e1lu dokon\u010dit v\u00fdb\u011br a ov\u011b\u0159ov\u00e1n\u00ed ocelov\u00e9ho lana, \u010d\u00edm\u017e zaji\u0161\u0165uje bezpe\u010dnost, shodu s p\u0159edpisy a n\u00e1kladovou efektivitu je\u0159\u00e1bov\u00fdch zdvihac\u00edch operac\u00ed.","protected":false},"author":8,"featured_media":17416,"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-17406","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-online-tools"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts\/17406"}],"collection":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/users\/8"}],"replies":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/comments?post=17406"}],"version-history":[{"count":12,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts\/17406\/revisions"}],"predecessor-version":[{"id":17423,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/posts\/17406\/revisions\/17423"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media\/17416"}],"wp:attachment":[{"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/media?parent=17406"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/categories?post=17406"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.dgcrane.com\/cs\/wp-json\/wp\/v2\/tags?post=17406"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}