{"id":12018,"date":"2026-07-15T01:18:26","date_gmt":"2026-07-15T01:18:26","guid":{"rendered":"https:\/\/www.kscranegroup.com\/?post_type=posts&#038;p=12018"},"modified":"2026-07-15T01:18:33","modified_gmt":"2026-07-15T01:18:33","slug":"overhead-crane-wheel-diameter-selection-guide","status":"publish","type":"posts","link":"https:\/\/www.kscranegroup.com\/pt\/posts\/overhead-crane-wheel-diameter-selection-guide\/","title":{"rendered":"Sele\u00e7\u00e3o do di\u00e2metro da roda da ponte rolante: um guia pr\u00e1tico de engenharia para GB\/T 26477.1-2011"},"content":{"rendered":"<div class=\"wp-block-rank-math-toc-block\" id=\"rank-math-toc\"><p>\u00cdndice<\/p><nav><ul><li><a href=\"#step-1-determine-the-effective-rail-width\">Etapa 1: Determine a largura efetiva do trilho<\/a><\/li><li><a href=\"#step-2-determine-the-allowable-specific-pressure-pl\">Etapa 2: Determine a press\u00e3o espec\u00edfica admiss\u00edvel PL<\/a><\/li><li><a href=\"#step-3-determine-coefficient-c\u2081\">Etapa 3: Determine o coeficiente c\u2081<\/a><\/li><li><a href=\"#step-4-determine-coefficient-c\u2082\">Etapa 4: Determine o coeficiente c\u2082<\/a><\/li><li><a href=\"#step-5-verify-overhead-crane-wheel-diameter-formulas-1-and-2\">Etapa 5: Verificar o di\u00e2metro da roda da ponte rolante \u2014 F\u00f3rmulas 1 e 2<\/a><\/li><li><a href=\"#step-6-calculate-equivalent-working-wheel-load-pmean\">Etapa 6: Calcular a carga de trabalho equivalente na roda Pmean<\/a><\/li><\/ul><\/nav><\/div>\n\n\n\n<p><a href=\"https:\/\/www.kscranegroup.com\/pt\/crane-wheel-assemblies\/\">Rodas de ponte rolante<\/a> As rodas s\u00e3o componentes cr\u00edticos de sustenta\u00e7\u00e3o do mecanismo de deslocamento da ponte rolante, suportando toda a estrutura da ponte e transferindo as cargas das rodas com seguran\u00e7a para os trilhos. A sele\u00e7\u00e3o do di\u00e2metro correto da roda da ponte rolante afeta diretamente a tens\u00e3o de contato roda-trilho, a estabilidade de opera\u00e7\u00e3o, a vida \u00fatil e os custos de manuten\u00e7\u00e3o. Uma roda subdimensionada pode levar a press\u00e3o excessiva nos mancais, desgaste acelerado da roda e do trilho e falha prematura dos componentes, enquanto uma roda superdimensionada pode aumentar o peso do equipamento e os custos de fabrica\u00e7\u00e3o. <\/p>\n\n\n\n<p>Este guia explica um m\u00e9todo pr\u00e1tico de seis etapas para determinar o di\u00e2metro adequado da roda de uma ponte rolante com base na norma GB\/T 26477.1-2011, abrangendo a largura efetiva do trilho, a press\u00e3o espec\u00edfica admiss\u00edvel nos apoios, os coeficientes de velocidade e de servi\u00e7o, as combina\u00e7\u00f5es de carga e as f\u00f3rmulas de verifica\u00e7\u00e3o de engenharia para pontes rolantes, p\u00f3rticos rolantes e outros equipamentos de eleva\u00e7\u00e3o sobre trilhos.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1597\" height=\"985\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/1Figure-1-Wheel-types-and-dimensions.png\" alt=\"\" class=\"wp-image-12011\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/1Figure-1-Wheel-types-and-dimensions.png 1597w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/1Figure-1-Wheel-types-and-dimensions-1536x947.png 1536w\" sizes=\"(max-width: 1597px) 100vw, 1597px\" \/><figcaption class=\"wp-element-caption\"><em>Tipos e dimens\u00f5es de rodas (Fonte: JB\/T 6392-2008)<\/em><\/figcaption><\/figure>\n\n\n\n<p>A norma tamb\u00e9m fornece f\u00f3rmulas para o c\u00e1lculo das tens\u00f5es locais na estrutura do guindaste induzidas pelas cargas das rodas (determina\u00e7\u00e3o de tens\u00f5es, distribui\u00e7\u00e3o de carga sob o trilho, press\u00e3o local nas placas de apoio das rodas para vigas I e vigas caix\u00e3o) e um m\u00e9todo para determinar a classifica\u00e7\u00e3o de servi\u00e7o do mecanismo de deslocamento das rodas. Esses aspectos n\u00e3o s\u00e3o abordados neste artigo \u2014 consulte a norma original para obter informa\u00e7\u00f5es completas.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"step-1-determine-the-effective-rail-width\">Etapa 1: Determine a largura efetiva do trilho<\/h2>\n\n\n\n<p>Para uma superf\u00edcie de corrida plana ou ligeiramente abaulada com largura total <strong>l<\/strong> e raio do canto <strong>r<\/strong> em cada lado:<\/p>\n\n\n\n<p>b = l \u2212 2 \u00d7 r<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1529\" height=\"1029\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/2Figure-2-P-type-or-QU-type-rail-cross-section.png\" alt=\"\" class=\"wp-image-12012\"\/><figcaption class=\"wp-element-caption\"><em>Se\u00e7\u00e3o transversal do trilho tipo P ou tipo QU (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<ul>\n<li>Para trilhos ou rodas com superf\u00edcies de rolamento ligeiramente abauladas, a press\u00e3o espec\u00edfica admiss\u00edvel PL pode ser aumentada em 10% (devido ao melhor contato roda-trilho).<\/li>\n\n\n\n<li>Para rodas que circulam na aba inferior de uma viga I (superf\u00edcie plana, c\u00f4nica ou ligeiramente abaulada), a largura efetiva \u00e9 <code>b = w \u2212 r<\/code>e o di\u00e2metro da roda D \u00e9 considerado no ponto m\u00e9dio da largura projetada (w \u2212 r).<\/li>\n<\/ul>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1416\" height=\"1111\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/3Figure-3-Wheel-running-on-a-beam-flange.png\" alt=\"\" class=\"wp-image-12013\"\/><figcaption class=\"wp-element-caption\"><em>Roda girando sobre a flange da viga (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"step-2-determine-the-allowable-specific-pressure-pl\">Etapa 2: Determine a press\u00e3o espec\u00edfica admiss\u00edvel PL<\/h2>\n\n\n\n<p>Os valores de PL s\u00e3o apresentados na Tabela 1. Os materiais met\u00e1licos devem estar em conformidade com as especifica\u00e7\u00f5es para a\u00e7o fundido, forjado ou laminado, ou ferro fundido nodular. Ao selecionar o PL, pode-se levar em considera\u00e7\u00e3o uma profundidade da camada endurecida da banda de rodagem de 0,01D.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2095\" height=\"751\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/4Table-1-PL-value-table.png\" alt=\"\" class=\"wp-image-12014\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/4Table-1-PL-value-table.png 2095w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/4Table-1-PL-value-table-1536x551.png 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/4Table-1-PL-value-table-2048x734.png 2048w\" sizes=\"(max-width: 2095px) 100vw, 2095px\" \/><figcaption class=\"wp-element-caption\"><em>Tabela 1 Tabela de valores PL (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<p>A resist\u00eancia m\u00e1xima \u00e0 tra\u00e7\u00e3o (UTS) \u00e9 a tens\u00e3o m\u00e1xima que um material pode suportar antes de se romper sob tra\u00e7\u00e3o, medida em MPa (1 MPa = 1 N\/mm\u00b2), determinada por meio de ensaio de tra\u00e7\u00e3o.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"step-3-determine-coefficient-c\u2081\">Etapa 3: Determine o coeficiente c\u2081<\/h2>\n\n\n\n<p>O coeficiente c\u2081 \u00e9 selecionado com base na velocidade de rota\u00e7\u00e3o da roda. Consulte a Tabela 2.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2008\" height=\"783\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/5Table-2-c1-value-table.png\" alt=\"\" class=\"wp-image-12027\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/5Table-2-c1-value-table.png 2008w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/5Table-2-c1-value-table-1536x599.png 1536w\" sizes=\"(max-width: 2008px) 100vw, 2008px\" \/><figcaption class=\"wp-element-caption\"><em>Tabela 2 Tabela de valores de c\u2081 (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"step-4-determine-coefficient-c\u2082\">Etapa 4: Determine o coeficiente c\u2082<\/h2>\n\n\n\n<p>O coeficiente <strong>c\u2082<\/strong> A classifica\u00e7\u00e3o \u00e9 selecionada com base na classifica\u00e7\u00e3o da capacidade de trabalho do mecanismo. Por pr\u00e1tica comum, essa classifica\u00e7\u00e3o segue a classifica\u00e7\u00e3o geral do guindaste e pode ser igual ou um n\u00edvel inferior \u00e0 capacidade de trabalho do guindaste. Consulte a Tabela 3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2172\" height=\"724\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/6Table-3-c2-value-table.png\" alt=\"\" class=\"wp-image-12028\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/6Table-3-c2-value-table.png 2172w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/6Table-3-c2-value-table-1536x512.png 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/6Table-3-c2-value-table-2048x683.png 2048w\" sizes=\"(max-width: 2172px) 100vw, 2172px\" \/><figcaption class=\"wp-element-caption\"><em>Tabela 3 Tabela de valores de c\u2082 (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"step-5-verify-overhead-crane-wheel-diameter-formulas-1-and-2\">Etapa 5: Verificar o di\u00e2metro da roda da ponte rolante \u2014 F\u00f3rmulas 1 e 2<\/h2>\n\n\n\n<p>Para definir o tamanho final da roda, verifique se ela suporta a carga m\u00e1xima de servi\u00e7o sem desgaste excessivo. Duas f\u00f3rmulas de verifica\u00e7\u00e3o se aplicam (F\u00f3rmula 1 e F\u00f3rmula 2).<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1842\" height=\"854\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/7Figure-4-Formula-1.png\" alt=\"\" class=\"wp-image-12015\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/7Figure-4-Formula-1.png 1842w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/7Figure-4-Formula-1-1536x712.png 1536w\" sizes=\"(max-width: 1842px) 100vw, 1842px\" \/><figcaption class=\"wp-element-caption\"><em>F\u00f3rmula 1 (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2184\" height=\"720\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/8Figure-5-Formula-2.png\" alt=\"\" class=\"wp-image-12016\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/8Figure-5-Formula-2.png 2184w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/8Figure-5-Formula-2-1536x506.png 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/8Figure-5-Formula-2-2048x675.png 2048w\" sizes=\"(max-width: 2184px) 100vw, 2184px\" \/><figcaption class=\"wp-element-caption\"><em>F\u00f3rmula 2 (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>S\u00edmbolo<\/th><th>Significado<\/th><th>Unidade<\/th><\/tr><\/thead><tbody><tr><td>D<\/td><td>Di\u00e2metro da roda<\/td><td>mil\u00edmetros<\/td><\/tr><tr><td>b<\/td><td>Largura efetiva do trilho<\/td><td>mil\u00edmetros<\/td><\/tr><tr><td>PL<\/td><td>Press\u00e3o espec\u00edfica admiss\u00edvel (da Tabela 1)<\/td><td>N\/mm\u00b2<\/td><\/tr><tr><td>c\u2081<\/td><td>Coeficiente dependente da velocidade (da Tabela 2)<\/td><td>\u2014<\/td><\/tr><tr><td>c\u2082<\/td><td>Coeficiente dependente do ciclo de trabalho (da Tabela 3)<\/td><td>\u2014<\/td><\/tr><tr><td>Pmax<\/td><td>Carga m\u00e1xima por roda sob a combina\u00e7\u00e3o de cargas A, B ou C (incluindo cargas de teste din\u00e2micas e est\u00e1ticas)<\/td><td>N<\/td><\/tr><tr><td>Pm\u00e9dio<\/td><td>Carga de trabalho equivalente por roda para as combina\u00e7\u00f5es A e B, considerada como o valor m\u00e1ximo.<\/td><td>N<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\" id=\"load-combination-categories\">Categorias de combina\u00e7\u00e3o de carga<\/h3>\n\n\n\n<figure class=\"wp-block-table\"><table><thead><tr><th>S\u00edmbolo<\/th><th>Significado<\/th><th>Unidade<\/th><\/tr><\/thead><tbody><tr><td>D<\/td><td>Di\u00e2metro da roda<\/td><td>mil\u00edmetros<\/td><\/tr><tr><td>b<\/td><td>Largura efetiva do trilho<\/td><td>mil\u00edmetros<\/td><\/tr><tr><td>PL<\/td><td>Press\u00e3o espec\u00edfica admiss\u00edvel (da Tabela 1)<\/td><td>N\/mm\u00b2<\/td><\/tr><tr><td>c\u2081<\/td><td>Coeficiente dependente da velocidade (da Tabela 2)<\/td><td>\u2014<\/td><\/tr><tr><td>c\u2082<\/td><td>Coeficiente dependente do ciclo de trabalho (da Tabela 3)<\/td><td>\u2014<\/td><\/tr><tr><td>Pmax<\/td><td>Carga m\u00e1xima por roda sob a combina\u00e7\u00e3o de cargas A, B ou C (incluindo cargas de teste din\u00e2micas e est\u00e1ticas)<\/td><td>N<\/td><\/tr><tr><td>Pm\u00e9dio<\/td><td>Carga de trabalho equivalente por roda para as combina\u00e7\u00f5es A e B, considerada como o valor m\u00e1ximo.<\/td><td>N<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"step-6-calculate-equivalent-working-wheel-load-pmean\">Etapa 6: Calcular a carga de trabalho equivalente na roda Pmean<\/h2>\n\n\n\n<p>Pmean \u2014 a carga de trabalho equivalente da roda considerando as combina\u00e7\u00f5es de carga A e B \u2014 \u00e9 calculada como uma aproxima\u00e7\u00e3o usando a F\u00f3rmula 3.<\/p>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"2172\" height=\"724\" src=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/9Figure-6-Formula-3.png\" alt=\"\" class=\"wp-image-12017\" srcset=\"https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/9Figure-6-Formula-3.png 2172w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/9Figure-6-Formula-3-1536x512.png 1536w, https:\/\/www.kscranegroup.com\/wp-content\/uploads\/2026\/07\/9Figure-6-Formula-3-2048x683.png 2048w\" sizes=\"(max-width: 2172px) 100vw, 2172px\" \/><figcaption class=\"wp-element-caption\"><em>F\u00f3rmula 3 (Fonte: GB\/T 26477.1-2011)<\/em><\/figcaption><\/figure>\n\n\n\n<p><strong>Limita\u00e7\u00e3o importante<\/strong>As f\u00f3rmulas acima aplicam-se apenas a rodas com di\u00e2metro n\u00e3o superior a 1,25 m. A experi\u00eancia demonstra que, para di\u00e2metros maiores, a press\u00e3o admiss\u00edvel entre o trilho e a roda deve ser reduzida; n\u00e3o se recomenda a utiliza\u00e7\u00e3o de rodas com di\u00e2metros maiores.<\/p>\n\n\n\n<p><strong>Padr\u00f5es de refer\u00eancia<strong><strong><strong><strong>(<a href=\"https:\/\/openstd.samr.gov.cn\/bzgk\/std\/std_list?p.p1=0&amp;p.p90=circulation_date&amp;p.p91=desc&amp;p.p2=%E8%B5%B7%E9%87%8D%E6%9C%BA\" target=\"_blank\" rel=\"noopener\">Consulta sobre as normas chinesas para guindastes<\/a>)<\/strong><\/strong><\/strong><\/strong>:<\/strong><\/p>\n\n\n\n<ul>\n<li>GB\/T 26477.1-2011 Guindastes \u2014 C\u00e1lculo de projeto para rodas e estrutura de suporte do trilho do carro associado \u2014 Parte 1: Geral<\/li>\n\n\n\n<li>GB\/T 6974.1-2008 Guindastes \u2014 Vocabul\u00e1rio \u2014 Parte 1: Geral (IDT ISO 4306-1:2007)<\/li>\n\n\n\n<li>GB\/T 20863.1-2021 Guindastes \u2014 Classifica\u00e7\u00e3o \u2014 Parte 1: Geral (IDT ISO 4301-1:2016)<\/li>\n\n\n\n<li>GB\/T 22437.1-2018 Guindastes \u2014 Princ\u00edpios de projeto para cargas e combina\u00e7\u00f5es de cargas \u2014 Parte 1: Geral<\/li>\n<\/ul>","protected":false},"excerpt":{"rendered":"When designing or procuring an overhead crane, how do you determine the correct wheel diameter for a given wheel load? The answer involves effective rail width, allowable specific bearing pressure, sp","protected":false},"featured_media":10134,"parent":0,"menu_order":0,"template":"single-SEO-Table.php","posts_category":[189],"posts_tag":[867,868,801,62,863,850,121,865,864,866],"acf":[],"_links":{"self":[{"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/xmxposts\/12018"}],"collection":[{"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/xmxposts"}],"about":[{"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/types\/posts"}],"version-history":[{"count":4,"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/xmxposts\/12018\/revisions"}],"predecessor-version":[{"id":12054,"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/xmxposts\/12018\/revisions\/12054"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/media\/10134"}],"wp:attachment":[{"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/media?parent=12018"}],"wp:term":[{"taxonomy":"posts_category","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/posts_category?post=12018"},{"taxonomy":"posts_tag","embeddable":true,"href":"https:\/\/www.kscranegroup.com\/pt\/wp-json\/wp\/v2\/posts_tag?post=12018"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}