{"id":217564,"date":"2026-10-23T10:16:57","date_gmt":"2026-10-23T08:16:57","guid":{"rendered":"https:\/\/e-servo.com\/?p=217564"},"modified":"2026-10-23T11:23:10","modified_gmt":"2026-10-23T09:23:10","slug":"travao-de-servomotor-funcionamento-avarias-e-testes","status":"publish","type":"post","link":"https:\/\/e-servo.com\/pt-pt\/news\/travao-de-servomotor-funcionamento-avarias-e-testes\/","title":{"rendered":"Trav\u00e3o de servomotor: funcionamento, avarias e testes"},"content":{"rendered":"<div class=\"wpb-content-wrapper\"><p>[vc_row][vc_column width=&#8221;1\/1&#8243;][vc_column_text uncode_shortcode_id=&#8221;595861&#8243;]<\/p>\n<p data-pm-slice=\"1 1 []\">Em muitos servomotores industriais, o trav\u00e3o desempenha um papel essencial na manuten\u00e7\u00e3o da posi\u00e7\u00e3o de um eixo quando o motor est\u00e1 parado, ajudando a evitar movimentos involunt\u00e1rios.<\/p>\n<p>No entanto, quando um trav\u00e3o apresenta uma avaria, os sintomas podem ser dif\u00edceis de interpretar: um eixo bloqueado, um motor que n\u00e3o consegue rodar, perda de capacidade de reten\u00e7\u00e3o da posi\u00e7\u00e3o\u2026<\/p>\n<p>Neste artigo, explicamos como funciona um trav\u00e3o de servomotor, quais s\u00e3o as avarias mais frequentes, como identific\u00e1-las e que solu\u00e7\u00f5es existem para restabelecer o funcionamento normal.[\/vc_column_text][vc_column_text uncode_shortcode_id=&#8221;117836&#8243;]<\/p>\n<h2 data-pm-slice=\"1 1 []\">O que \u00e9 um trav\u00e3o de servomotor?<\/h2>\n<p>Um trav\u00e3o de servomotor \u00e9 geralmente um <strong>trav\u00e3o eletromagn\u00e9tico de reten\u00e7\u00e3o<\/strong> integrado no motor.<\/p>\n<p>A sua principal fun\u00e7\u00e3o \u00e9 manter o veio do motor imobilizado quando o trav\u00e3o n\u00e3o est\u00e1 alimentado eletricamente.<\/p>\n<p>\u00c9 utilizado principalmente:<\/p>\n<ul data-spread=\"false\">\n<li>Em eixos verticais, para ajudar a impedir a queda de uma carga.<\/li>\n<li>Em m\u00e1quinas que exigem uma manuten\u00e7\u00e3o precisa da posi\u00e7\u00e3o.<\/li>\n<li>Em aplica\u00e7\u00f5es nas quais \u00e9 necess\u00e1rio manter a posi\u00e7\u00e3o ap\u00f3s uma paragem de emerg\u00eancia ou uma falha de alimenta\u00e7\u00e3o el\u00e9trica, desde que as caracter\u00edsticas do trav\u00e3o o permitam.<\/li>\n<\/ul>\n<h2>Como funciona um trav\u00e3o de servomotor?<\/h2>\n<p>Num trav\u00e3o t\u00edpico acionado por molas, estas exercem press\u00e3o sobre o disco de fric\u00e7\u00e3o quando o trav\u00e3o n\u00e3o est\u00e1 alimentado, mantendo o veio do motor imobilizado. Quando a bobina \u00e9 alimentada, o campo magn\u00e9tico gerado liberta o mecanismo de travagem, permitindo que o veio do motor rode livremente.<\/p>\n<p><strong>Gostaria de conhecer o seu funcionamento em mais detalhe?<\/strong><\/p>\n<p>Prepar\u00e1mos um v\u00eddeo que explica, passo a passo, como funciona um trav\u00e3o de servomotor.<\/p>\n<p>\ud83c\udfa5 <a href=\"https:\/\/youtube.com\/shorts\/oMMvL-i_HkE?si=iZFjmUZbey4jcFdk\"><strong>Ver o v\u00eddeo no YouTube<\/strong><\/a><\/p>\n<h2>Quais s\u00e3o as avarias mais frequentes de um trav\u00e3o de servomotor?<\/h2>\n<p>Embora os trav\u00f5es dos servomotores sejam concebidos para uma longa vida \u00fatil, podem apresentar diferentes tipos de avarias. Identificar os sintomas permite frequentemente poupar tempo durante o diagn\u00f3stico.<\/p>\n<h3>1. O trav\u00e3o patina<\/h3>\n<p>O trav\u00e3o parece funcionar, mas deixa de manter corretamente o eixo em posi\u00e7\u00e3o quando o servomotor est\u00e1 parado.<\/p>\n<p><strong>Poss\u00edveis causas:<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>Contamina\u00e7\u00e3o por \u00f3leo, massa lubrificante, poeiras ou outros contaminantes.<\/li>\n<li>Desgaste das superf\u00edcies de fric\u00e7\u00e3o.<\/li>\n<\/ul>\n<h3>2. O trav\u00e3o n\u00e3o desbloqueia<\/h3>\n<p>O motor permanece bloqueado, apesar de a m\u00e1quina lhe dar ordem para rodar.<\/p>\n<p><strong>Poss\u00edveis causas:<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>Desgaste do mecanismo de travagem.<\/li>\n<li>Bobina do trav\u00e3o queimada.<\/li>\n<\/ul>\n<h3>3. O trav\u00e3o n\u00e3o volta a atuar<\/h3>\n<p>O motor funciona normalmente, mas, quando a alimenta\u00e7\u00e3o el\u00e9trica do trav\u00e3o \u00e9 interrompida, este deixa de manter corretamente o eixo em posi\u00e7\u00e3o.<\/p>\n<p><strong>Poss\u00edveis causas:<\/strong><\/p>\n<ul data-spread=\"false\">\n<li>Desgaste acentuado do trav\u00e3o.<\/li>\n<li>Desmagnetiza\u00e7\u00e3o dos \u00edmanes permanentes (nos modelos de trav\u00e3o que utilizam esta tecnologia).<\/li>\n<\/ul>\n<h2>Como testar um trav\u00e3o de servomotor?<\/h2>\n<p>N\u00e3o existe um procedimento de teste \u00fanico que possa ser aplicado a todos os trav\u00f5es de servomotores.<\/p>\n<p>O m\u00e9todo de verifica\u00e7\u00e3o depende de v\u00e1rios fatores, nomeadamente:<\/p>\n<ul data-spread=\"false\">\n<li>Do modelo do trav\u00e3o.<\/li>\n<li>Do fabricante (Siemens, Schneider, Bosch Rexroth, Yaskawa, etc.).<\/li>\n<li>Da aplica\u00e7\u00e3o em que est\u00e1 instalado.<\/li>\n<li>De outras caracter\u00edsticas t\u00e9cnicas do sistema.<\/li>\n<\/ul>\n<p>Por isso, um diagn\u00f3stico fi\u00e1vel exige uma an\u00e1lise de todo o sistema e n\u00e3o apenas do trav\u00e3o.<\/p>\n<p><strong>\ud83d\udc49 Tem d\u00favidas sobre o estado do trav\u00e3o do seu servomotor?<\/strong><\/p>\n<p>A nossa equipa pode realizar um diagn\u00f3stico para identificar a origem da avaria e propor-lhe a solu\u00e7\u00e3o mais adequada.<\/p>\n<p><strong>N\u00e3o hesite em contactar-nos! \ud83d\ude09<\/strong>[\/vc_column_text][\/vc_column][\/vc_row][vc_row unlock_row=&#8221;&#8221; row_height_percent=&#8221;25&#8243; overlay_alpha=&#8221;50&#8243; gutter_size=&#8221;3&#8243; column_width_percent=&#8221;100&#8243; shift_y=&#8221;0&#8243; z_index=&#8221;0&#8243; content_parallax=&#8221;0&#8243; uncode_shortcode_id=&#8221;920055&#8243;][vc_column width=&#8221;1\/1&#8243;][uncode_twentytwenty media_before=&#8221;214656&#8243; media_after=&#8221;214657&#8243;][\/vc_column][\/vc_row]<\/p>\n<\/div>","protected":false},"excerpt":{"rendered":"<p>[vc_row][vc_column width=&#8221;1\/1&#8243;][vc_column_text uncode_shortcode_id=&#8221;595861&#8243;] Em muitos servomotores industriais, o trav\u00e3o desempenha um papel essencial na manuten\u00e7\u00e3o da posi\u00e7\u00e3o de um eixo [&hellip;]<\/p>\n","protected":false},"author":49,"featured_media":217565,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[648],"tags":[],"class_list":["post-217564","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-sem-categoria"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.7 - 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