{"id":223,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/rubbing\/"},"modified":"2026-05-23T22:45:47","modified_gmt":"2026-05-23T22:45:47","slug":"rubbing","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt\/glossary\/rubbing\/","title":{"rendered":"O que \u00e9 atrito em m\u00e1quinas rotativas? Contato por fric\u00e7\u00e3o"},"content":{"rendered":"<h1>Compreens\u00e3o do atrito em m\u00e1quinas rotativas<\/h1>\n\t\t<section class=\"woocommerce hestia-shop products is-shortcode\" id=\"products\" data-sorder=\"hestia_shop\" >\n\t\t\t\t\t\t<div class=\"\">\n\t\t\t\t\t\t<div class=\"hestia-shop-content\">\n\t\t\t<div class=\"row\" data-aos=\"fade-up\" >\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Balanset-1A kit completo de balanceador port\u00e1til e analisador de vibra\u00e7\u00f5es\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/09\/77-e1693745667801-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-1\/\" title=\"Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A\">Equilibrador port\u00e1til e analisador de vibra\u00e7\u00f5es Balanset-1A<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,975.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=986\" data-quantity=\"1\" data-product_id=\"986\" data-product_sku=\"BS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=986\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_986\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"986\" data-product_sku=\"BS-1\" aria-label=\"Adiciona ao carrinho: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_986\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Grande plano do sensor de vibra\u00e7\u00e3o Balanset-1A\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-3.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/vibration-sensor\/\" title=\"Sensor de vibra\u00e7\u00e3o\">Sensor de vibra\u00e7\u00e3o<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>90.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1820\" data-quantity=\"1\" data-product_id=\"1820\" data-product_sku=\"VS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1820\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1820\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1820\" data-product_sku=\"VS-1\" aria-label=\"Adiciona ao carrinho: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u201cVibration sensor\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1820\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Sensor \u00f3tico (tac\u00f3metro laser)\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-1536x1023.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/ZKqzGXSCCBU.webp 1600w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00f3tico (tac\u00f3metro laser)\">Sensor \u00f3tico (tac\u00f3metro laser)<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>124.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1832\" data-quantity=\"1\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1832\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1832\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1832\" data-product_sku=\"Tach-1\" aria-label=\"Adiciona ao carrinho: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u201cOptical Sensor (Laser Tachometer)\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1832\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" title=\"Balanset-4\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit de balanceamento de rotor Vibromera: estojo de transporte, condicionador de sinal multicanal, analisador port\u00e1til, base magn\u00e9tica, sensores de vibra\u00e7\u00e3o e cabos espiralados.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-18x12.webp 18w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2022\/12\/balkom4.webp 640w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/balanset-4\/\" title=\"Balanset-4\">Balanset-4<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>6,803.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1833\" data-quantity=\"1\" data-product_id=\"1833\" data-product_sku=\"BS-4\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1833\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1833\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1833\" data-product_sku=\"BS-4\" aria-label=\"Adiciona ao carrinho: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u201cBalanset-4\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1833\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div><!-- \/.row --><div class=\"row\">\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Base magn\u00e9tica.\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-1024x682.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2018\/05\/IMG-36.webp 1280w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/magnet-stand\/\" title=\"Suporte magn\u00e9tico Insize-60-kgf\">Suporte magn\u00e9tico Insize-60-kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1852\" data-quantity=\"1\" data-product_id=\"1852\" data-product_sku=\"MS-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=1852\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_1852\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"1852\" data-product_sku=\"MS-1\" aria-label=\"Adiciona ao carrinho: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u201cMagnetic Stand Insize-60-kgf\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_1852\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Fita refletora\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-16x12.webp 16w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-460x306.webp 460w, https:\/\/vibromera.eu\/wp-content\/uploads\/2023\/05\/s-l1600-272x182.webp 272w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/parts\/\" rel=\"tag\">Pe\u00e7as<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/reflective-tape\/\" title=\"Fita refletora\">Fita refletora<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=2329\" data-quantity=\"1\" data-product_id=\"2329\" data-product_sku=\"rt-1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=2329\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_2329\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"2329\" data-product_sku=\"rt-1\" aria-label=\"Adiciona ao carrinho: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u201cReflective tape\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_2329\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t<div class=\"col-ms-6 col-sm-6 col-md-3 shop-item\">\n\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" class=\"woocommerce-LoopProduct-link woocommerce-loop-product__link\">\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"card-image\">\n\t\t\t\t\t\t\t\t\t<a href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Conte\u00fado do kit Balanset-1A com unidade de interface, sensores, tac\u00f3metro e acess\u00f3rios\" srcset=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp 230w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-600x400.webp 600w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-300x200.webp 300w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1024x683.webp 1024w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-768x512.webp 768w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-1536x1024.webp 1536w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-2048x1366.webp 2048w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-360x240.webp 360w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-272x182.webp 272w, https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-e1732998877834.webp 708w\" sizes=\"auto, (max-width: 230px) 100vw, 230px\" \/>\t\t\t\t\t\t\t\t\t<\/a>\n\t\t\t\t\t\t\t\t\t<div class=\"ripple-container\"><\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"content\">\n\t\t\t\t\t\t\t\t<span class=\"category\"><a href=\"https:\/\/vibromera.eu\/pt\/product-category\/devices\/\" rel=\"tag\">Dispositivos<\/a><\/span>\n\t\t\t\t\t\t\t\t<h4 class=\"card-title\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<a class=\"shop-item-title-link\" href=\"https:\/\/vibromera.eu\/pt\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico &quot;Balanset-1A&quot; OEM\">Balanceador din\u00e2mico \"Balanset-1A\" OEM<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>1,735.00<\/span> + IVA (se aplic\u00e1vel)<\/h4><\/div>\n\t\t\t\t\t\t\t\t\t<div class=\"stats\">\n\t\t\t\t\t\t\t\t\t\t<a rel=\"nofollow\" href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=4193\" data-quantity=\"1\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart btn btn-just-icon btn-simple btn-default\" title=\"Adicionar\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar\" class=\"fas fa-cart-plus\" data-no-translation-data-original-title=\"\"><\/i><\/a>\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t<\/a><a href=\"\/pt\/wp-json\/wp\/v2\/glossary\/223?add-to-cart=4193\" aria-describedby=\"woocommerce_loop_add_to_cart_link_describedby_4193\" data-quantity=\"1\" class=\"button product_type_simple add_to_cart_button ajax_add_to_cart\" data-product_id=\"4193\" data-product_sku=\"BS-1OEM\" aria-label=\"Adiciona ao carrinho: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d foi adicionado ao seu carrinho\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Adicionar<\/a>\t<span id=\"woocommerce_loop_add_to_cart_link_describedby_4193\" class=\"screen-reader-text\">\n\t\t\t<\/span>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t\t<\/section>\n\t\t\n<p><strong>Fric\u00e7\u00e3o<\/strong> \u00e9 o contacto por fric\u00e7\u00e3o e o movimento de deslizamento relativo entre componentes rotativos e estacion\u00e1rios de uma m\u00e1quina. O termo enfatiza o aspeto de fric\u00e7\u00e3o cont\u00ednua de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-rub\/\">contato rotor-estator<\/a>, distinguindo-o do contacto ligeiro e intermitente ou dos impactos isolados que tamb\u00e9m podem ocorrer. A fric\u00e7\u00e3o gera for\u00e7as de fric\u00e7\u00e3o, liberta um calor significativo atrav\u00e9s do trabalho de fric\u00e7\u00e3o e produz uma <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a> assinatura dominada por um turbilh\u00e3o para tr\u00e1s, <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/sub-synchronous\/\">subs\u00edncrono<\/a> componentes e efeitos t\u00e9rmicos. \u00c9 uma das falhas mais perigosas que uma m\u00e1quina rotativa pode desenvolver, porque pode evoluir para uma avaria em poucos minutos.<\/p>\n<p>&#8220;Fric\u00e7\u00e3o&#8221; e &#8220;fric\u00e7\u00e3o do rotor&#8221; s\u00e3o frequentemente utilizadas como sin\u00f3nimos. Na pr\u00e1tica, a fric\u00e7\u00e3o tende a real\u00e7ar o lado da fric\u00e7\u00e3o e t\u00e9rmico do contacto, enquanto a fric\u00e7\u00e3o do rotor \u00e9 o termo mais amplo que abrange todas as formas de contacto \u2014 desde uma ligeira raspagem at\u00e9 impactos fortes.<\/p>\n<h2>1. A mec\u00e2nica de fric\u00e7\u00e3o da fric\u00e7\u00e3o<\/h2>\n<h3>Modelo de Atrito de Coulomb<\/h3>\n<p>A fric\u00e7\u00e3o obedece aos princ\u00edpios do atrito seco (Coulomb):<\/p>\n<ul>\n<li><strong>For\u00e7a de fric\u00e7\u00e3o:<\/strong> F = \u03bc \u00d7 N, em que \u03bc \u00e9 o coeficiente de atrito e N \u00e9 a for\u00e7a normal que pressiona as superf\u00edcies uma contra a outra.<\/li>\n<li><strong>Dire\u00e7\u00e3o:<\/strong> a for\u00e7a de atrito op\u00f5e-se sempre ao movimento relativo entre as superf\u00edcies em contacto.<\/li>\n<li><strong>Coeficientes t\u00edpicos:<\/strong> a\u00e7o sobre a\u00e7o \u03bc \u2248 0,3-0,5; a\u00e7o sobre material de veda\u00e7\u00e3o \u03bc \u2248 0,2-0,4.<\/li>\n<li><strong>Gera\u00e7\u00e3o de calor:<\/strong> essencialmente todo o trabalho de fric\u00e7\u00e3o \u00e9 convertido em calor no contacto.<\/li>\n<\/ul>\n<h3>For\u00e7as tangenciais e normais<\/h3>\n<p>Durante o contacto, dois componentes de for\u00e7a actuam sobre o rotor:<\/p>\n<ul>\n<li><strong>For\u00e7a normal:<\/strong> empurra radialmente para dentro o rotor no ponto de fric\u00e7\u00e3o.<\/li>\n<li><strong>For\u00e7a de fric\u00e7\u00e3o:<\/strong> actua tangencialmente, opondo-se \u00e0 rota\u00e7\u00e3o.<\/li>\n<li><strong>For\u00e7a resultante:<\/strong> a combina\u00e7\u00e3o tende a abrandar o rotor e a desvi\u00e1-lo para tr\u00e1s, contra o sentido da rota\u00e7\u00e3o.<\/li>\n<li><strong>Aumento do bin\u00e1rio:<\/strong> o atrito dissipa a pot\u00eancia, aumentando o bin\u00e1rio de acionamento que a m\u00e1quina tem de fornecer.<\/li>\n<\/ul>\n<h2>2. Padr\u00f5es de vibra\u00e7\u00e3o carater\u00edsticos<\/h2>\n<h3>Giro reverso<\/h3>\n<p>A carater\u00edstica mais distintiva da fric\u00e7\u00e3o \u00e9 o retrocesso (reverso) <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/whirl\/\">precess\u00e3o<\/a>:<\/p>\n<ul>\n<li>A for\u00e7a de atrito cria uma componente tangencial que impulsiona o movimento orbital para tr\u00e1s.<\/li>\n<li>O eixo <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/orbit\/\">\u00f3rbita<\/a> tra\u00e7os opostos \u00e0 dire\u00e7\u00e3o de rota\u00e7\u00e3o do veio.<\/li>\n<li>A frequ\u00eancia do turbilh\u00e3o \u00e9 normalmente sub-s\u00edncrona - menos de 1\u00d7 a velocidade de funcionamento.<\/li>\n<li>As frequ\u00eancias comuns aparecem em ordens fracion\u00e1rias: 0.5\u00d7, 0.33\u00d7, 0.25\u00d7.<\/li>\n<li>A forma da \u00f3rbita \u00e9 frequentemente irregular ou visivelmente distorcida.<\/li>\n<\/ul>\n<h3>Caracter\u00edsticas do espetro<\/h3>\n<ul>\n<li><strong>Picos subs\u00edncronos:<\/strong> picos m\u00faltiplos abaixo de 1\u00d7, frequentemente em harm\u00f3nicos fraccion\u00e1rios.<\/li>\n<li><strong>Componente s\u00edncrono:<\/strong> o 1\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/synchronous-vibration\/\">s\u00edncrono<\/a> O pico pode subir \u00e0 medida que as for\u00e7as de fric\u00e7\u00e3o o aumentam.<\/li>\n<li><strong>Harm\u00f3nicos superiores:<\/strong> 2\u00d7, 3\u00d7, 4\u00d7 <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/harmonics\/\">harm\u00f3nicos<\/a> surgem devido \u00e0 n\u00e3o linearidade do atrito intermitente.<\/li>\n<li><strong>Ru\u00eddo de banda larga:<\/strong> o n\u00edvel de ru\u00eddo em toda a <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/spectrum\/\">espetro<\/a> sobe.<\/li>\n<li><strong>Espetro inst\u00e1vel:<\/strong> Os picos aparecem e desaparecem ou mudam de frequ\u00eancia de uma medi\u00e7\u00e3o para outra.<\/li>\n<\/ul>\n<h3>Caracter\u00edsticas da forma de onda temporal<\/h3>\n<ul>\n<li>Eventos impulsivos ou picos de cada vez que se inicia o contacto, vis\u00edveis no <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/time-waveform\/\">forma de onda temporal<\/a>.<\/li>\n<li>Corte ou achatamento nas deflex\u00f5es m\u00e1ximas, onde o estator limita fisicamente o curso.<\/li>\n<li>Forma geral irregular, n\u00e3o sinusoidal.<\/li>\n<li>Padr\u00f5es de batida produzidos pela coexist\u00eancia de v\u00e1rias frequ\u00eancias.<\/li>\n<\/ul>\n<h2>3. Efeitos t\u00e9rmicos da fric\u00e7\u00e3o<\/h2>\n<h3>Gera\u00e7\u00e3o de calor<\/h3>\n<p>O atrito converte a energia mec\u00e2nica diretamente em calor:<\/p>\n<ul>\n<li><strong>Taxa:<\/strong> a pot\u00eancia dissipada \u00e9 igual \u00e0 for\u00e7a de atrito \u00d7 velocidade de deslizamento.<\/li>\n<li><strong>Magnitude:<\/strong> uma fric\u00e7\u00e3o ligeira pode libertar 10-100 watts; uma fric\u00e7\u00e3o forte, quilowatts.<\/li>\n<li><strong>Concentra\u00e7\u00e3o:<\/strong> esse calor \u00e9 descarregado numa \u00e1rea de contacto muito pequena.<\/li>\n<li><strong>Aumento da temperatura:<\/strong> as temperaturas locais da superf\u00edcie podem exceder 500 \u00b0C em casos graves.<\/li>\n<\/ul>\n<h3>Desenvolvimento da curvatura t\u00e9rmica<\/h3>\n<p>O perigo da fric\u00e7\u00e3o reside num ciclo de feedback calor-vibra\u00e7\u00e3o:<\/p>\n<ol>\n<li>A fric\u00e7\u00e3o inicial deposita calor num dos lados do eixo.<\/li>\n<li>O aquecimento assim\u00e9trico dobra o eixo numa <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/thermal-bow\/\">arco t\u00e9rmico<\/a>.<\/li>\n<li>O arco t\u00e9rmico aumenta a deflex\u00e3o do eixo.<\/li>\n<li>Uma maior deflex\u00e3o conduz a uma fric\u00e7\u00e3o mais grave.<\/li>\n<li>Mais fric\u00e7\u00e3o gera ainda mais calor.<\/li>\n<li>Este feedback positivo pode levar a uma falha r\u00e1pida e descontrolada.<\/li>\n<\/ol>\n<p>Uma vez que cada volta deste ciclo aprofunda a seguinte, a fric\u00e7\u00e3o \u00e9 considerada como uma forma de <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/self-excited-vibration\/\">vibra\u00e7\u00e3o autoexcitada<\/a> e uma via para a <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/rotor-instability\/\">instabilidade do rotor<\/a>.<\/p>\n<h3>Efeitos t\u00e9rmicos secund\u00e1rios<\/h3>\n<ul>\n<li><strong>Aquecimento da chumaceira:<\/strong> o calor \u00e9 conduzido ao longo do eixo para os rolamentos.<\/li>\n<li><strong>Degrada\u00e7\u00e3o do \u00f3leo:<\/strong> temperaturas excessivas degradam o lubrificante.<\/li>\n<li><strong>Altera\u00e7\u00f5es materiais:<\/strong> Transforma\u00e7\u00f5es de fase ou altera\u00e7\u00f5es metal\u00fargicas em zonas afetadas pelo calor.<\/li>\n<li><strong>Stress t\u00e9rmico:<\/strong> pode iniciar fissuras nas regi\u00f5es sujeitas a tens\u00f5es t\u00e9rmicas.<\/li>\n<\/ul>\n<h2>4. Dete\u00e7\u00e3o de fric\u00e7\u00e3o no terreno<\/h2>\n<h3>Monitoriza\u00e7\u00e3o de vibra\u00e7\u00e3o<\/h3>\n<ul>\n<li><strong>Alarmes subs\u00edncronos:<\/strong> alerta sobre picos a 0,3-0,5 \u00d7 velocidade de rota\u00e7\u00e3o.<\/li>\n<li><strong>Monitoriza\u00e7\u00e3o da \u00f3rbita:<\/strong> a an\u00e1lise autom\u00e1tica da \u00f3rbita assinala o aparecimento de um turbilh\u00e3o invertido.<\/li>\n<li><strong>Altera\u00e7\u00f5es espectrais:<\/strong> Os algoritmos detectam a chegada s\u00fabita de m\u00faltiplos harm\u00f3nicos.<\/li>\n<li><strong>Recorte de forma de onda:<\/strong> dete\u00e7\u00e3o da distor\u00e7\u00e3o n\u00e3o sinusoidal que o contacto produz.<\/li>\n<\/ul>\n<p>\u00c9 exatamente para reconhecer estes padr\u00f5es que serve um analisador port\u00e1til. Trabalhando nos pr\u00f3prios rolamentos da m\u00e1quina \u00e0 velocidade de funcionamento, um instrumento de dois canais como o <a href=\"https:\/\/vibromera.eu\/pt\/produto\/balanset-1\/\">Balanset-1A<\/a> capta a forma de onda temporal e a amplitude e fase de 1\u00d7, para que um t\u00e9cnico possa ver o recorte impulsivo e a energia de ordem fraccionada que marcam uma fric\u00e7\u00e3o e, em seguida, verificar se o desequil\u00edbrio residual ou <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/misalignment\/\">desalinhamento<\/a> \u00e9 a causa subjacente antes de qualquer desmontagem.<\/p>\n<h3>Monitoriza\u00e7\u00e3o da temperatura<\/h3>\n<ul>\n<li>Rolamento <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/temperature-sensor\/\">sensores de temperatura<\/a> com alarmes de subida r\u00e1pida.<\/li>\n<li>Monitoramento da temperatura por infravermelho em se\u00e7\u00f5es expostas do eixo.<\/li>\n<li>Monitoriza\u00e7\u00e3o diferencial de temperatura - topo versus fundo de um rolamento.<\/li>\n<li>Alarmes de taxa de varia\u00e7\u00e3o, por exemplo, superior a 5 \u00b0C por minuto.<\/li>\n<\/ul>\n<h3>Indicadores adicionais<\/h3>\n<ul>\n<li><strong>Aumento do bin\u00e1rio:<\/strong> o consumo de energia aumenta \u00e0 medida que a fric\u00e7\u00e3o carrega o acionamento.<\/li>\n<li><strong>Flutua\u00e7\u00e3o de velocidade:<\/strong> pequenas varia\u00e7\u00f5es de velocidade devido \u00e0 varia\u00e7\u00e3o do bin\u00e1rio de atrito.<\/li>\n<li><strong>Emiss\u00e3o ac\u00fastica:<\/strong> som de alta frequ\u00eancia do contacto, detet\u00e1vel por <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/acoustic-emission\/\">emiss\u00e3o ac\u00fastica<\/a> sensores.<\/li>\n<li><strong>Inspe\u00e7\u00e3o visual:<\/strong> detritos de desgaste, descolora\u00e7\u00e3o e ranhuras vis\u00edveis.<\/li>\n<\/ul>\n<h2>5. Responder a uma fric\u00e7\u00e3o<\/h2>\n<h3>A\u00e7\u00f5es imediatas<\/h3>\n<ol>\n<li><strong>Reduzir a gravidade:<\/strong> diminuir a velocidade ou a carga se for seguro faz\u00ea-lo.<\/li>\n<li><strong>Acompanhar de perto:<\/strong> vigiar continuamente a vibra\u00e7\u00e3o e a temperatura.<\/li>\n<li><strong>Preparar o encerramento:<\/strong> ter uma emerg\u00eancia <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/shutdown\/\">encerramento<\/a> pronto.<\/li>\n<li><strong>Paragem de emerg\u00eancia:<\/strong> desarmar a m\u00e1quina se a vibra\u00e7\u00e3o ou a temperatura estiverem a aumentar.<\/li>\n<li><strong>Permitir o arrefecimento:<\/strong> fazer funcionar o dispositivo de rota\u00e7\u00e3o ou permitir o arrefecimento natural antes da inspe\u00e7\u00e3o, para que um arco t\u00e9rmico possa relaxar.<\/li>\n<\/ol>\n<h3>Investiga\u00e7\u00e3o<\/h3>\n<ul>\n<li>Verificar se existem provas f\u00edsicas de contacto.<\/li>\n<li>Medir as folgas nos locais suspeitos de fric\u00e7\u00e3o.<\/li>\n<li>Verificar se h\u00e1 arco t\u00e9rmico ou permanente <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/shaft-bow\/\">arco de eixo<\/a>.<\/li>\n<li>Identificar a causa principal - vibra\u00e7\u00e3o excessiva, folga insuficiente, etc.<\/li>\n<\/ul>\n<h3>A\u00e7\u00f5es corretivas<\/h3>\n<ul>\n<li><strong>Aumentar as folgas:<\/strong> maquinar as zonas danificadas ou substituir os componentes.<\/li>\n<li><strong>Abordar a causa principal:<\/strong> <a href=\"https:\/\/vibromera.eu\/pt\/glossary\/equilibrio-2\/\">equilibrar o rotor<\/a>, corrigir o alinhamento, resolver o problema do rolamento que permitiu o contacto.<\/li>\n<li><strong>Substituir as pe\u00e7as danificadas:<\/strong> vedantes, componentes de rolamentos e sec\u00e7\u00f5es do veio, se necess\u00e1rio.<\/li>\n<li><strong>Verificar as folgas:<\/strong> confirmar a exist\u00eancia de folga adequada em todos os locais antes de reiniciar.<\/li>\n<\/ul>\n<p>A fric\u00e7\u00e3o \u00e9 uma das falhas mais graves relacionadas com a vibra\u00e7\u00e3o em m\u00e1quinas rotativas. A sua capacidade de se agravar rapidamente atrav\u00e9s do feedback t\u00e9rmico exige um reconhecimento imediato, uma resposta r\u00e1pida e disciplinada e uma corre\u00e7\u00e3o rigorosa - porque a alternativa, em equipamento cr\u00edtico, \u00e9 uma falha catastr\u00f3fica.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt\/glossary\/\">\u2190 Voltar ao \u00edndice principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Aprenda sobre atrito, o fen\u00f4meno de fric\u00e7\u00e3o que ocorre quando pe\u00e7as rotativas entram em contato com superf\u00edcies estacion\u00e1rias, criando calor, desgaste e padr\u00f5es caracter\u00edsticos de vibra\u00e7\u00e3o subs\u00edncrona.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-223","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/223","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/223\/revisions"}],"predecessor-version":[{"id":101360,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/glossary\/223\/revisions\/101360"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/media?parent=223"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/categories?post=223"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt\/wp-json\/wp\/v2\/tags?post=223"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}