{"id":215,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/rotor-bar-defects\/"},"modified":"2026-07-03T09:57:24","modified_gmt":"2026-07-03T09:57:24","slug":"rotor-bar-defects","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt-br\/glossary\/rotor-bar-defects\/","title":{"rendered":"O que s\u00e3o Defeitos nas Barras do Rotor? Barras Quebradas em Motores"},"content":{"rendered":"<h1>Compreendendo Defeitos nas Barras do Rotor<\/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-br\/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-br\/product\/balanset-1\/\" title=\"Portable balancer &#038; Vibration analyzer 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 full kit portable balancer and vibration analyzer\" 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-br\/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-br\/product\/balanset-1\/\" title=\"Portable balancer &#038; Vibration analyzer Balanset-1A\">Balanceador port\u00e1til &#038; Analisador de vibra\u00e7\u00e3o 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\">&euro;<\/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-br\/wp-json\/wp\/v2\/glossary\/215?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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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-br\/wp-json\/wp\/v2\/glossary\/215?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=\"Adicione 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 ao carrinho<\/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-br\/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-br\/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=\"Balanset-1A vibration sensor close-up\" 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-br\/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-br\/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\">&euro;<\/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-br\/wp-json\/wp\/v2\/glossary\/215?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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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-br\/wp-json\/wp\/v2\/glossary\/215?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=\"Adicione 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 ao carrinho<\/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-br\/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-br\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00d3ptico (Tac\u00f4metro a 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 \u00d3ptico (Tac\u00f4metro a 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-br\/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-br\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Sensor \u00d3ptico (Tac\u00f4metro a Laser)\">Sensor \u00d3ptico (Tac\u00f4metro a 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\">&euro;<\/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-br\/wp-json\/wp\/v2\/glossary\/215?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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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-br\/wp-json\/wp\/v2\/glossary\/215?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=\"Adicione 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 ao carrinho<\/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-br\/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-br\/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=\"Vibromera rotor balancing kit: carry case, multi-channel signal conditioner, handheld analyzer, magnetic base, vibration sensors, and coiled cables.\" 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-br\/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-br\/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\">&euro;<\/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-br\/wp-json\/wp\/v2\/glossary\/215?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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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-br\/wp-json\/wp\/v2\/glossary\/215?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=\"Adicione 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 ao carrinho<\/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-br\/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-br\/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=\"Magnet base.\" 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-br\/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-br\/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\">&euro;<\/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-br\/wp-json\/wp\/v2\/glossary\/215?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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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-br\/wp-json\/wp\/v2\/glossary\/215?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=\"Adicione 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 ao carrinho<\/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-br\/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-br\/product\/reflective-tape\/\" title=\"Fita refletiva\">\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 refletiva\" 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-br\/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-br\/product\/reflective-tape\/\" title=\"Fita refletiva\">Fita refletiva<\/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\">&euro;<\/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-br\/wp-json\/wp\/v2\/glossary\/215?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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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-br\/wp-json\/wp\/v2\/glossary\/215?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=\"Adicione 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 ao carrinho<\/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-br\/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-br\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico \u201cBalanset-1A\u201d 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=\"Balanset-1A kit contents with interface unit, sensors, tachometer and accessories\" 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-br\/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-br\/product\/dynamic-balancer-balanset-1a\/\" title=\"Balanceador din\u00e2mico \u201cBalanset-1A\u201d OEM\">Balanceador din\u00e2mico \u201cBalanset-1A\u201d 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\">&euro;<\/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-br\/wp-json\/wp\/v2\/glossary\/215?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 ao carrinho\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Adicionar ao carrinho\" 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-br\/wp-json\/wp\/v2\/glossary\/215?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=\"Adicione 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 ao carrinho<\/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>Defeitos nas barras do rotor<\/strong> \u2014 tamb\u00e9m chamadas de barras do rotor quebradas ou trincadas \u2014 s\u00e3o fraturas, trincas ou conex\u00f5es de alta resist\u00eancia nas barras condutoras de um motor de indu\u00e7\u00e3o do tipo gaiola de esquilo <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/motor-defects\/\">motor<\/a> rotor. Um rotor do tipo gaiola de esquilo \u00e9 constru\u00eddo com barras de alum\u00ednio ou cobre embutidas nos canais de um n\u00facleo de ferro laminado, com ambas as extremidades de cada barra unidas por um par de an\u00e9is de curto-circuito (an\u00e9is de extremidade). Quando uma barra se fratura, ou uma junta do anel de extremidade trinca, a corrente n\u00e3o pode mais fluir livremente pelo condutor danificado. O resultado \u00e9 uma assimetria eletromagn\u00e9tica, torque pulsante e uma assinatura altamente reconhec\u00edvel <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a> e assinatura de corrente marcada por <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/sidebands\/\">bandas laterais<\/a> espa\u00e7adas na <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/pole-pass-frequency\/\">frequ\u00eancia de passagem de polos<\/a> (o n\u00famero de polos \u00d7 a frequ\u00eancia de escorregamento).<\/p>\n<p>As falhas nas barras do rotor representam cerca de 10\u201315% das avarias em motores de indu\u00e7\u00e3o. Elas s\u00e3o perigosas precisamente porque s\u00e3o progressivas: uma \u00fanica <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/broken-rotor-bars\/\">barra do rotor quebrada<\/a> sobrecarrega suas vizinhas, e o que come\u00e7a como um condutor trincado pode se transformar em m\u00faltiplas quebras, pulsa\u00e7\u00e3o severa de torque e destrui\u00e7\u00e3o eventual do rotor, se n\u00e3o for detectada precocemente.<\/p>\n<h2>1. Tipos de Defeitos nas Barras do Rotor<\/h2>\n<p>A fam\u00edlia de falhas abrange v\u00e1rios mecanismos distintos, todos os quais perturbam a simetria el\u00e9trica do rotor de maneiras semelhantes:<\/p>\n<ul>\n<li><strong>Barras do rotor quebradas:<\/strong> Uma fratura completa de uma barra condutora, geralmente localizada perto de um anel de extremidade, onde se concentram as tens\u00f5es t\u00e9rmicas e mec\u00e2nicas. Uma quebra quase sempre come\u00e7a como uma trinca por fadiga e progride at\u00e9 uma separa\u00e7\u00e3o total.<\/li>\n<li><strong>An\u00e9is de extremidade trincados:<\/strong> Fraturas nos an\u00e9is de curto-circuito que unem as barras, mais frequentemente na jun\u00e7\u00e3o barra-anel. Seu efeito el\u00e9trico espelha o de uma barra quebrada. S\u00e3o mais comuns em m\u00e1quinas grandes, em motores que partem com frequ\u00eancia e em cargas de alta in\u00e9rcia.<\/li>\n<li><strong>Juntas de alta resist\u00eancia:<\/strong> Uma conex\u00e3o el\u00e9trica deficiente entre a barra e o anel de extremidade, causada por defeitos de fabrica\u00e7\u00e3o, ciclos t\u00e9rmicos ou corros\u00e3o. Os sintomas se assemelham aos de uma barra quebrada, mas s\u00e3o frequentemente intermitentes e produzem assinaturas mais sutis do que uma quebra limpa.<\/li>\n<li><strong>Porosidade do rotor:<\/strong> Vazios de fundi\u00e7\u00e3o em rores de alum\u00ednio fundido sob press\u00e3o que reduzem a se\u00e7\u00e3o transversal efetiva do condutor. A porosidade \u00e9 um defeito de fabrica\u00e7\u00e3o que pode permanecer latente por anos antes de progredir para trincas e quebras.<\/li>\n<\/ul>\n<h2>2. Por que as Barras do Rotor Falham<\/h2>\n<p>As falhas nas barras s\u00e3o impulsionadas por uma combina\u00e7\u00e3o de fatores t\u00e9rmicos, mec\u00e2nicos, de fabrica\u00e7\u00e3o e operacionais que se somam ao longo da vida \u00fatil do motor.<\/p>\n<h3>Tens\u00e3o t\u00e9rmica<\/h3>\n<p>Cada partida e parada submetem o rotor a ciclos de expans\u00e3o e contra\u00e7\u00e3o. Como o alum\u00ednio se expande muito mais que o n\u00facleo de ferro circundante, esse crescimento diferencial afrouxa as barras e fatiga as juntas. Partidas frequentes provocam choques t\u00e9rmicos repetidos, e qualquer ponto localizado de alta resist\u00eancia torna-se um ponto quente que acelera o dano.<\/p>\n<h3>Tens\u00e3o mec\u00e2nica<\/h3>\n<p>As barras condutoras tamb\u00e9m suportam <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/centrifugal-force\/\">for\u00e7a centr\u00edfuga<\/a> (significativo em m\u00e1quinas de alta velocidade), for\u00e7as eletromagn\u00e9ticas pulsantes durante a opera\u00e7\u00e3o normal e as correntes elevadas da partida que imp\u00f5em choque mec\u00e2nico. Vibra\u00e7\u00f5es externas <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/vibration-analysis\/\">vibra\u00e7\u00e3o<\/a> transmitidas pela carga acionada fatigam ainda mais as barras.<\/p>\n<h3>Defeitos de fabrica\u00e7\u00e3o e condi\u00e7\u00f5es de opera\u00e7\u00e3o<\/h3>\n<p>Porosidade de fundi\u00e7\u00e3o, liga\u00e7\u00e3o fraca entre barra e anel de extremidade, inclus\u00f5es de material e tratamento t\u00e9rmico inadequado plantam as sementes de falhas futuras. Em servi\u00e7o, os maiores vil\u00f5es s\u00e3o partidas frequentes, cargas de alta in\u00e9rcia com longos tempos de acelera\u00e7\u00e3o, eventos de rotor travado com suas correntes extremas e monofasamento \u2014 opera\u00e7\u00e3o com uma fase da alimenta\u00e7\u00e3o perdida, o que for\u00e7a um padr\u00e3o de corrente severamente assim\u00e9trico atrav\u00e9s da gaiola.<\/p>\n<h2>3. A Assinatura de Vibra\u00e7\u00e3o e Corrente<\/h2>\n<p>A marca diagn\u00f3stica do dano nas barras do rotor \u00e9 uma fam\u00edlia de bandas laterais agrupadas em torno da velocidade de opera\u00e7\u00e3o.<\/p>\n<ul>\n<li><strong>Pico central:<\/strong> 1\u00d7 velocidade de opera\u00e7\u00e3o (f<sub>r<\/sub>), a linha normal <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/running-speed\/\">velocidade de opera\u00e7\u00e3o<\/a> linha.<\/li>\n<li><strong>Bandas Laterais:<\/strong> pares sim\u00e9tricos em f<sub>r<\/sub> \u00b1 F<sub>P<\/sub>, f<sub>r<\/sub> \u00b1 2F<sub>P<\/sub>, f<sub>r<\/sub> \u00b1 3F<sub>P<\/sub>, onde F<sub>P<\/sub> \u00e9 a frequ\u00eancia de passagem de polo \u2014 o n\u00famero de polos \u00d7 a <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/slip-frequency\/\">frequ\u00eancia de deslizamento<\/a> (tipicamente alguns hertz).<\/li>\n<li><strong>Padr\u00e3o:<\/strong> bandas laterais sim\u00e9tricas e uniformemente espa\u00e7adas em intervalos de frequ\u00eancia de passagem de polo \u2014 bem diferentes das bandas laterais de <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/bearing-fault-frequencies\/\">falhas nos rolamentos<\/a>, que se situam em torno das frequ\u00eancias de defeito.<\/li>\n<\/ul>\n<h3>Calculando as frequ\u00eancias de escorregamento e de passagem de polo<\/h3>\n<p>A frequ\u00eancia de escorregamento \u00e9 a diferen\u00e7a entre a velocidade s\u00edncrona e a velocidade real, expressa em hertz: f<sub>s<\/sub> = (N<sub>s\u00edncrona<\/sub> \u2212 N<sub>real<\/sub>) \/ 60, e o espa\u00e7amento das bandas laterais \u00e9 a frequ\u00eancia de passagem de polo F<sub>P<\/sub> = polos \u00d7 f<sub>s<\/sub>. Considere um motor de 4 polos, 60 Hz, com velocidade s\u00edncrona de 1800 rpm operando a 1750 rpm sob carga. Ent\u00e3o f<sub>s<\/sub> = (1800 \u2212 1750) \/ 60 = 0,833 Hz, F<sub>P<\/sub> = 4 \u00d7 0,833 = 3,33 Hz, e a linha da velocidade de opera\u00e7\u00e3o fica em 29,17 Hz. As bandas laterais, portanto, aparecem em 29,17 \u00b1 3,33 Hz \u2014 ou seja, em 25,8 Hz e 32,5 Hz. Um <a href=\"https:\/\/vibromera.eu\/pt-br\/calculators\/harmonic-frequency-calculator\/\">calculadora de frequ\u00eancia harm\u00f4nica<\/a> e um <a href=\"https:\/\/vibromera.eu\/pt-br\/calculators\/motor-slip-calculator\/\">calculadora de escorregamento de motor<\/a> torna essa convers\u00e3o simples ao configurar uma medi\u00e7\u00e3o na oficina.<\/p>\n<h3>Depend\u00eancia da carga<\/h3>\n<p>Como o escorregamento \u2014 e, portanto, a corrente que flui nas barras quebradas \u2014 cresce com a carga, as bandas laterais s\u00e3o sens\u00edveis \u00e0 carga. Em vazio, elas s\u00e3o m\u00ednimas; sob carga leve, come\u00e7am a surgir; e em plena carga, est\u00e3o em seu ponto mais forte e mais pass\u00edvel de diagn\u00f3stico. A regra pr\u00e1tica \u00e9 simples: sempre teste um motor suspeito sob carga operacional normal para obter a melhor sensibilidade.<\/p>\n<h3>Assinatura de corrente (MCSA)<\/h3>\n<p>A An\u00e1lise de Assinatura de Corrente do Motor (MCSA) revela a mesma f\u00edsica no dom\u00ednio el\u00e9trico. Aqui, as bandas laterais se agrupam em torno da <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/electrical-frequency\/\">frequ\u00eancia da rede<\/a> em vez da velocidade de opera\u00e7\u00e3o, e aparecem em f<sub>rede<\/sub> \u00b1 2\u00b7s\u00b7f<sub>rede<\/sub>, onde s \u00e9 o escorregamento em unidade por unidade \u2014 o mesmo espa\u00e7amento \u00b1F<sub>P<\/sub> como na vibra\u00e7\u00e3o, j\u00e1 que 2\u00b7s\u00b7f<sub>rede<\/sub> = F<sub>P<\/sub>. Para o motor de 4 polos e 60 Hz acima (s = 50\/1800 \u2248 2,8%), isso posiciona as bandas laterais em 56,7 Hz e 63,3 Hz. Sua amplitude aumenta com o n\u00famero de barras quebradas e, em alguns casos, a MCSA detecta a falha antes da vibra\u00e7\u00e3o. A mesma f\u00edsica relacionada ao escorregamento est\u00e1 na base do relacionado <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/pole-pass-frequency\/\">frequ\u00eancia de passagem de polos<\/a> usado em <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/electrical-faults\/\">falha el\u00e9trica<\/a> diagn\u00f3stico.<\/p>\n<h2>4. Detec\u00e7\u00e3o, Diagn\u00f3stico e Medi\u00e7\u00e3o em Campo<\/h2>\n<p>Resolver bandas laterais a apenas alguns hertz de dist\u00e2ncia de um pico dominante de velocidade de opera\u00e7\u00e3o exige resolu\u00e7\u00e3o de frequ\u00eancia fina. Um procedimento disciplinado segue os seguintes passos:<\/p>\n<ol>\n<li><strong>Calcule o padr\u00e3o esperado:<\/strong> determine a velocidade s\u00edncrona a partir dos polos e da frequ\u00eancia da rede, me\u00e7a a velocidade de opera\u00e7\u00e3o real e calcule as frequ\u00eancias de escorregamento e de passagem de polo.<\/li>\n<li><strong>Adquira um espectro de alta resolu\u00e7\u00e3o:<\/strong> use uma resolu\u00e7\u00e3o <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/fft\/\">FFT<\/a> fina (melhor que cerca de 0,2 Hz) para que as bandas laterais pr\u00f3ximas se separem claramente da linha 1\u00d7. Um <a href=\"https:\/\/vibromera.eu\/pt-br\/calculators\/fft-resolution-calculator\/\">calculadora de resolu\u00e7\u00e3o FFT<\/a> ajuda voc\u00ea a escolher a extens\u00e3o e o n\u00famero de linhas corretos.<\/li>\n<li><strong>Procure por bandas laterais:<\/strong> procure por picos sim\u00e9tricos em 1\u00d7 \u00b1 frequ\u00eancia de passagem de polo e seus m\u00faltiplos.<\/li>\n<li><strong>Teste sob carga:<\/strong> capture dados com o motor carregado com sua carga operacional normal.<\/li>\n<li><strong>Confirme o padr\u00e3o:<\/strong> verifique se as bandas laterais s\u00e3o sim\u00e9tricas e corretamente espa\u00e7adas antes de declarar um diagn\u00f3stico.<\/li>\n<\/ol>\n<p>Esse tipo de captura de espectro de alta resolu\u00e7\u00e3o \u00e9 exatamente o trabalho para o qual um instrumento port\u00e1til de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt-br\/produto\/balanset-1\/\">Balanset-1A<\/a> \u00e9 projetado. Trabalhando nos pr\u00f3prios mancais do motor na velocidade de opera\u00e7\u00e3o, ele registra a linha da velocidade de opera\u00e7\u00e3o e suas bandas laterais de passagem de polo diretamente na m\u00e1quina em funcionamento, para que voc\u00ea possa confirmar um diagn\u00f3stico de barra quebrada no local sem desmontagem e, em seguida, acompanhar sua severidade ao longo do tempo.<\/p>\n<h3>Avalia\u00e7\u00e3o de severidade<\/h3>\n<p>Uma regra pr\u00e1tica amplamente utilizada classifica a severidade pela altura das bandas laterais em rela\u00e7\u00e3o ao pico 1\u00d7:<\/p>\n<ul>\n<li><strong>Banda lateral abaixo de 40% do 1\u00d7:<\/strong> possivelmente uma \u00fanica barra trincada ou quebrada \u2014 continue monitorando.<\/li>\n<li><strong>40\u201360% do 1\u00d7:<\/strong> uma barra quebrada confirmada (ou barras) \u2014 planeje uma substitui\u00e7\u00e3o.<\/li>\n<li><strong>Acima de 60% do 1\u00d7:<\/strong> m\u00faltiplas barras quebradas \u2014 a substitui\u00e7\u00e3o \u00e9 urgente.<\/li>\n<li><strong>Bandas laterais mais altas que o pico 1\u00d7:<\/strong> uma condi\u00e7\u00e3o grave que exige a\u00e7\u00e3o imediata.<\/li>\n<\/ul>\n<h2>5. Consequ\u00eancias e Progress\u00e3o<\/h2>\n<p>Se n\u00e3o for tratada, uma \u00fanica falha raramente permanece isolada. O dano evolui por est\u00e1gios reconhec\u00edveis:<\/p>\n<ul>\n<li><strong>Falha inicial (uma barra):<\/strong> leve pulsa\u00e7\u00e3o de torque, pequenas bandas laterais emergentes e perda m\u00ednima de desempenho. Um motor pode operar por meses nesse estado.<\/li>\n<li><strong>Falhas progressivas (m\u00faltiplas barras):<\/strong> a corrente que deveria fluir pela barra quebrada se desvia para suas vizinhas, superaquecendo-as; o estresse t\u00e9rmico ent\u00e3o quebra essas barras tamb\u00e9m. As pulsa\u00e7\u00f5es de torque e a vibra\u00e7\u00e3o aumentam, e uma m\u00e1quina pode se deteriorar de uma para v\u00e1rias barras quebradas em poucas semanas.<\/li>\n<li><strong>Condi\u00e7\u00e3o grave:<\/strong> v\u00e1rias barras quebradas adjacentes produzem pulsa\u00e7\u00e3o violenta de torque, alta vibra\u00e7\u00e3o e ru\u00eddo, e superaquecimento do rotor. O desfecho \u00e9 a falha completa do rotor, com risco real de danos colaterais <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/stator-defects\/\">estator<\/a> devido \u00e0s correntes circulantes excessivas.<\/li>\n<\/ul>\n<h2>6. A\u00e7\u00f5es Corretivas e Preven\u00e7\u00e3o<\/h2>\n<p>Uma vez confirmada a falha, a resposta \u00e9 gerenci\u00e1-la deliberadamente, em vez de esperar pela quebra:<\/p>\n<ul>\n<li><strong>Na detec\u00e7\u00e3o:<\/strong> reduza o intervalo de monitoramento (de mensal para semanal), confirme o diagn\u00f3stico com MCSA, planeje a substitui\u00e7\u00e3o do motor ou do rotor, tenha uma pe\u00e7a sobressalente pronta para servi\u00e7os cr\u00edticos e investigue por que as barras quebraram em primeiro lugar.<\/li>\n<li><strong>Op\u00e7\u00f5es de reparo:<\/strong> a substitui\u00e7\u00e3o do rotor \u00e9 o reparo mais confi\u00e1vel para m\u00e1quinas grandes; a substitui\u00e7\u00e3o completa do motor \u00e9 frequentemente a rota mais econ\u00f4mica para os pequenos; oficinas especializadas podem refundir rotores de alum\u00ednio; e uma \u00fanica barra quebrada pode permitir opera\u00e7\u00e3o cont\u00ednua limitada sob monitoramento rigoroso.<\/li>\n<li><strong>Preven\u00e7\u00e3o:<\/strong> minimize partidas frequentes com soft starters ou inversores de frequ\u00eancia, elimine o monof\u00e1sico, garanta ventila\u00e7\u00e3o e resfriamento adequados, especifique motores classificados para o ciclo de servi\u00e7o real e confie na detec\u00e7\u00e3o precoce para agir antes que a falha se multiplique.<\/li>\n<\/ul>\n<p>Os defeitos nas barras do rotor est\u00e3o entre as falhas mais distintivas do ponto de vista diagn\u00f3stico em motores: suas bandas laterais caracter\u00edsticas de passagem de polo as tornam confiavelmente detect\u00e1veis tanto por <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/vibration-diagnostics\/\">diagn\u00f3stico de vibra\u00e7\u00e3o<\/a> quanto por an\u00e1lise de corrente. Captur\u00e1-las precocemente transforma uma potencial falha catastr\u00f3fica do rotor e uma paralisa\u00e7\u00e3o n\u00e3o planejada prolongada em um reparo planejado e gerenci\u00e1vel.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/\">\u2190 Voltar ao \u00cdndice Principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Learn about rotor bar defects in squirrel cage motors, including broken bars and cracked end rings, detectable through slip frequency sidebands in vibration and current analysis.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,111],"tags":[],"class_list":["post-215","glossary","type-glossary","status-publish","hentry","category-glossary","category-rotor-balancing"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/glossary\/215","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":2,"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/glossary\/215\/revisions"}],"predecessor-version":[{"id":102163,"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/glossary\/215\/revisions\/102163"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/media?parent=215"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/categories?post=215"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/tags?post=215"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}