{"id":20618,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/air-gap\/"},"modified":"2026-07-03T09:54:53","modified_gmt":"2026-07-03T09:54:53","slug":"air-gap","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/pt-br\/glossary\/air-gap\/","title":{"rendered":"O que \u00e9 o Entreferro em Motores El\u00e9tricos? Folga Cr\u00edtica"},"content":{"rendered":"<h1>Compreendendo o Entreferro em Motores El\u00e9tricos<\/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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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\/20618?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>O <strong>entreferro<\/strong> \u00e9 a estreita folga radial entre a superf\u00edcie externa do rotor e o furo interno do estator em um motor el\u00e9trico ou gerador. Tipicamente apenas <strong>0,3\u20132,0 mm<\/strong> (0,012\u20130,080 pol) de largura, esse fino espa\u00e7o anular \u00e9 a ponte magn\u00e9tica pela qual a energia eletromagn\u00e9tica passa entre os enrolamentos estacion\u00e1rios e o membro rotativo. Apesar de seu tamanho modesto, o entreferro \u00e9 uma das dimens\u00f5es mais decisivas no projeto da m\u00e1quina: ele governa a efici\u00eancia, o fator de pot\u00eancia, o torque de partida e \u2014 de interesse direto para o engenheiro de confiabilidade \u2014 a suscetibilidade da m\u00e1quina a <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/magnetic-pull\/\">puxamento magn\u00e9tico desequilibrado<\/a> e o resultante <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/vibration\/\">vibra\u00e7\u00e3o<\/a>.<\/p>\n<h2>1. Defini\u00e7\u00e3o: O que \u00e9 o Entreferro?<\/h2>\n<p>O entreferro \u00e9 a folga que separa o ferro do rotor e do estator para que o rotor possa girar livremente, permitindo ainda que o fluxo magn\u00e9tico atravesse de um para o outro. Funcionalmente, \u00e9 o elemento de maior relut\u00e2ncia em todo o circuito magn\u00e9tico \u2014 o ar \u00e9 aproximadamente mil vezes menos perme\u00e1vel que o a\u00e7o el\u00e9trico \u2014, portanto, sua largura e uniformidade dominam como o campo magn\u00e9tico se comporta. Duas propriedades importam independentemente: a <em>magnitude<\/em> do entreferro (qu\u00e3o largo ele \u00e9) e sua <em>uniformidade<\/em> (se \u00e9 o mesmo em toda a volta do furo).<\/p>\n<p>Ambas t\u00eam consequ\u00eancias profundas. Um entreferro n\u00e3o uniforme produz for\u00e7as magn\u00e9ticas radiais desbalanceadas que impulsionam a vibra\u00e7\u00e3o e aceleram <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/bearing-wear\/\">desgaste do rolamento<\/a>, enquanto um entreferro excessivamente largo corr\u00f3i silenciosamente a efici\u00eancia e infla a corrente de magnetiza\u00e7\u00e3o que o motor consome para estabelecer seu fluxo. A arte do projeto de motores \u00e9 escolher o menor entreferro que a mec\u00e2nica tolerar\u00e1 com seguran\u00e7a.<\/p>\n<h2>2. Dimens\u00f5es T\u00edpicas do Entreferro<\/h2>\n<p>O entreferro absoluto cresce com o tamanho da m\u00e1quina, mas como uma <em>fra\u00e7\u00e3o<\/em> do di\u00e2metro do furo, ele diminui \u2014 m\u00e1quinas grandes operam com entreferros proporcionalmente mais apertados porque seus rotores s\u00e3o mais r\u00edgidos em rela\u00e7\u00e3o ao seu di\u00e2metro.<\/p>\n<h3>Por Tamanho do Motor<\/h3>\n<ul>\n<li><strong>Motores pequenos (&lt; 10 HP):<\/strong> 0,3\u20130,6 mm (0,012\u20130,024 pol).<\/li>\n<li><strong>Motores m\u00e9dios (10\u2013200 HP):<\/strong> 0,5\u20131,2 mm (0,020\u20130,047 pol).<\/li>\n<li><strong>Motores grandes (200\u20131000 HP):<\/strong> 1,0\u20132,0 mm (0,040\u20130,080 pol).<\/li>\n<li><strong>Motores muito grandes (&gt; 1000 HP):<\/strong> 1,5\u20133,0 mm (0,060\u20130,120 pol).<\/li>\n<li><strong>Tend\u00eancia geral:<\/strong> m\u00e1quinas maiores t\u00eam entreferros absolutos maiores, mas um entreferro menor como porcentagem do di\u00e2metro.<\/li>\n<\/ul>\n<h3>Por Tipo de Motor<\/h3>\n<ul>\n<li><strong>Motores de indu\u00e7\u00e3o:<\/strong> entreferros maiores, 0,5\u20132,0 mm t\u00edpicos.<\/li>\n<li><strong>Motores s\u00edncronos:<\/strong> amplamente semelhantes aos motores de indu\u00e7\u00e3o.<\/li>\n<li><strong>Motores CC:<\/strong> entreferros de armadura muito pequenos, 0,3\u20131,0 mm.<\/li>\n<li><strong>Projetos de alta efici\u00eancia:<\/strong> tendem para a extremidade menor de sua classe para melhor desempenho.<\/li>\n<\/ul>\n<h2>3. Por que o Entreferro Importa<\/h2>\n<h3>Desempenho eletromagn\u00e9tico<\/h3>\n<ul>\n<li><strong>Relut\u00e2ncia do circuito magn\u00e9tico:<\/strong> o entreferro \u00e9 a relut\u00e2ncia dominante no caminho do fluxo; tudo o mais (o a\u00e7o) \u00e9 comparativamente transparente.<\/li>\n<li><strong>Corrente de magnetiza\u00e7\u00e3o:<\/strong> um entreferro menor precisa de menos corrente de magnetiza\u00e7\u00e3o para estabelecer o mesmo fluxo, o que eleva o fator de pot\u00eancia.<\/li>\n<li><strong>Efici\u00eancia:<\/strong> entreferros menores s\u00e3o geralmente mais eficientes porque reduzem as perdas de magnetiza\u00e7\u00e3o.<\/li>\n<li><strong>Produ\u00e7\u00e3o de torque:<\/strong> um entreferro mais apertado fornece acoplamento magn\u00e9tico mais forte e, portanto, melhor torque, incluindo o torque de partida.<\/li>\n<\/ul>\n<h3>Considera\u00e7\u00f5es mec\u00e2nicas<\/h3>\n<ul>\n<li><strong>Folga:<\/strong> o entreferro deve absorver a deflex\u00e3o do eixo, as toler\u00e2ncias do rolamento e a expans\u00e3o t\u00e9rmica sem que o rotor toque o estator.<\/li>\n<li><strong>Margem de seguran\u00e7a:<\/strong> evita o contato rotor-estator durante transientes de vibra\u00e7\u00e3o ou condi\u00e7\u00f5es operacionais incomuns.<\/li>\n<li><strong>Fabricabilidade:<\/strong> o entreferro escolhido deve ser alcan\u00e7\u00e1vel de forma repet\u00edvel dentro das toler\u00e2ncias normais de produ\u00e7\u00e3o.<\/li>\n<\/ul>\n<p>Essas duas press\u00f5es puxam em dire\u00e7\u00f5es opostas, raz\u00e3o pela qual o entreferro \u00e9 fundamentalmente um compromisso e n\u00e3o um valor a ser minimizado cegamente. A realidade mec\u00e2nica de <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/eccentricity\/\">excentricidade<\/a> em servi\u00e7o significa que um projetista que escolhe um entreferro muito apertado simplesmente troca efici\u00eancia pelo risco de um atrito destrutivo.<\/p>\n<h2>4. Excentricidade do Entreferro<\/h2>\n<p>A excentricidade do entreferro \u00e9 a n\u00e3o uniformidade do folga ao redor da circunfer\u00eancia \u2014 o defeito de entreferro mais importante para o analista de vibra\u00e7\u00e3o.<\/p>\n<ul>\n<li><strong>Entreferro uniforme:<\/strong> a mesma dimens\u00e3o em cada posi\u00e7\u00e3o angular.<\/li>\n<li><strong>Entreferro exc\u00eantrico:<\/strong> varia ao redor do furo \u2014 pequeno em um lado, maior no lado oposto.<\/li>\n<li><strong>Quantifica\u00e7\u00e3o:<\/strong> excentricidade = (g<sub>max<\/sub> \u2212 g<sub>min<\/sub>) \/ g<sub>m\u00e9dia<\/sub>, expresso como uma porcentagem.<\/li>\n<li><strong>Limite aceit\u00e1vel:<\/strong> tipicamente &lt; 10% para opera\u00e7\u00e3o adequada.<\/li>\n<\/ul>\n<p>Os engenheiros distinguem ainda mais <strong>excentricidade est\u00e1tica<\/strong> (o rotor fica fora do centro, mas o ponto mais estreito permanece em uma localiza\u00e7\u00e3o fixa \u2014 geralmente um erro de furo ou montagem) de <strong>excentricidade din\u00e2mica<\/strong> (o ponto mais estreito gira com o eixo \u2014 um rotor empenado ou exc\u00eantrico). Os dois produzem assinaturas espectrais sutilmente diferentes, o que permite que o diagn\u00f3stico os distinga.<\/p>\n<h3>Causas da excentricidade<\/h3>\n<ul>\n<li><strong>Desgaste do rolamento:<\/strong> permite que o rotor se assente fora do centro em seu alojamento.<\/li>\n<li><strong>Toler\u00e2ncias de fabrica\u00e7\u00e3o:<\/strong> furo do estator ou rotor n\u00e3o perfeitamente conc\u00eantricos.<\/li>\n<li><strong>Erros de montagem:<\/strong> tampas de extremidade desalinhadas ou um rotor inclinado.<\/li>\n<li><strong>Distor\u00e7\u00e3o t\u00e9rmica:<\/strong> aquecimento desigual deformando a circularidade.<\/li>\n<li><strong>Distor\u00e7\u00e3o da carca\u00e7a:<\/strong> <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/soft-foot\/\">p\u00e9 mancal frouxo<\/a> ou tens\u00e3o de montagem torcendo a carca\u00e7a e o furo.<\/li>\n<\/ul>\n<h3>Efeitos da excentricidade<\/h3>\n<ul>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/magnetic-pull\/\">Tra\u00e7\u00e3o magn\u00e9tica desbalanceada<\/a> (UMP):<\/strong> uma for\u00e7a radial resultante que puxa o rotor em dire\u00e7\u00e3o ao lado de menor entreferro, o que tende a piorar a excentricidade em um loop de realimenta\u00e7\u00e3o.<\/li>\n<li><strong>Vibra\u00e7\u00e3o em frequ\u00eancias relacionadas \u00e0 rede:<\/strong> a excentricidade est\u00e1tica geralmente eleva um pico em 2\u00d7 a frequ\u00eancia de <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/electrical-frequency\/\">frequ\u00eancia el\u00e9trica<\/a> (100 Hz em uma rede de 50 Hz, 120 Hz em 60 Hz), enquanto a excentricidade din\u00e2mica aparece principalmente em 1\u00d7 a velocidade de rota\u00e7\u00e3o com bandas laterais de passagem de polo.<\/li>\n<li><strong><a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/pole-pass-frequency\/\">Frequ\u00eancia de passagem do polo<\/a> bandas laterais:<\/strong> uma assinatura diagn\u00f3stica reveladora flanqueando o pico da frequ\u00eancia de rede.<\/li>\n<li><strong>Sobrecarga do rolamento:<\/strong> a UMP assim\u00e9trica carrega um lado do rolamento, acelerando o desgaste.<\/li>\n<li><strong>Perda de efici\u00eancia:<\/strong> um circuito magn\u00e9tico distorcido nunca \u00e9 \u00f3timo.<\/li>\n<\/ul>\n<h2>5. Medi\u00e7\u00e3o e Avalia\u00e7\u00e3o do Entreferro<\/h2>\n<h3>Medi\u00e7\u00e3o direta (motor desmontado)<\/h3>\n<ul>\n<li><strong>Paqu\u00edmetros de l\u00e2minas:<\/strong> insira l\u00e2minas de medi\u00e7\u00e3o entre o rotor e o estator em v\u00e1rios locais.<\/li>\n<li><strong>Procedimento:<\/strong> me\u00e7a em 8\u201312 posi\u00e7\u00f5es distribu\u00eddas uniformemente ao redor da circunfer\u00eancia.<\/li>\n<li><strong>Calcular:<\/strong> a m\u00e9dia, o m\u00ednimo, o m\u00e1ximo e a porcentagem de excentricidade resultante.<\/li>\n<li><strong>Quando:<\/strong> durante uma revis\u00e3o do motor ou substitui\u00e7\u00e3o de rolamento, quando o rotor est\u00e1 fora.<\/li>\n<\/ul>\n<h3>Avalia\u00e7\u00e3o indireta (motor em funcionamento)<\/h3>\n<p>Raramente voc\u00ea consegue desmontar uma m\u00e1quina em funcionamento, ent\u00e3o a sa\u00fade do entreferro \u00e9 geralmente inferida a partir de suas assinaturas el\u00e9tricas e mec\u00e2nicas usando <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/vibration-analysis\/\">an\u00e1lise de vibra\u00e7\u00e3o<\/a>:<\/p>\n<ul>\n<li><strong>Vibra\u00e7\u00e3o em 2\u00d7 a frequ\u00eancia de rede:<\/strong> amplitude elevada sugere um entreferro n\u00e3o uniforme \u2014 confirme com verifica\u00e7\u00f5es de corrente e carga\/vazio, j\u00e1 que desbalanceamento da rede e resson\u00e2ncia da carca\u00e7a podem elevar o mesmo pico.<\/li>\n<li><strong>Bandas laterais de passagem de polo:<\/strong> sua presen\u00e7a e amplitude acompanham o grau de excentricidade.<\/li>\n<li><strong>An\u00e1lise de assinatura de corrente do motor (MCSA):<\/strong> os efeitos do entreferro modulam a corrente do estator e aparecem em seu espectro.<\/li>\n<li><strong>Ru\u00eddo ac\u00fastico:<\/strong> a intensidade do zumbido eletromagn\u00e9tico frequentemente aumenta com a excentricidade.<\/li>\n<\/ul>\n<p>Em campo, um instrumento de dois canais, como o <a href=\"https:\/\/vibromera.eu\/pt-br\/produto\/balanset-1\/\">Balanset-1A<\/a> torna essa avalia\u00e7\u00e3o pr\u00e1tica: com <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/accelerometer\/\">aceler\u00f4metros<\/a> nas caixas de rolamento do motor, ele captura o <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/spectrum\/\">espectro de vibra\u00e7\u00e3o<\/a> na velocidade de opera\u00e7\u00e3o, permitindo que o analista identifique o pico de 2\u00d7 a frequ\u00eancia da rede e suas bandas laterais de passagem de polo sem interromper a produ\u00e7\u00e3o. Como os sintomas do entreferro se sobrep\u00f5em a simples <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/unbalance\/\">desbalanceamento<\/a>, o analista confirma a origem el\u00e9trica observando se o pico suspeito desaparece no instante em que o motor \u00e9 desenergizado \u2014 um truque de parada por in\u00e9rcia que falhas mec\u00e2nicas n\u00e3o conseguem imitar. Voc\u00ea pode converter a velocidade de rota\u00e7\u00e3o e a frequ\u00eancia da rede nos picos exatos para procurar usando nossa <a href=\"https:\/\/vibromera.eu\/pt-br\/calculators\/motor-electrical-frequencies\/\">Calculadora de Frequ\u00eancia de Defeitos El\u00e9tricos do Motor<\/a>, e verificar o n\u00edvel geral medido contra os limites com a <a href=\"https:\/\/vibromera.eu\/pt-br\/calculators\/vibration-velocity\/\">ferramenta de velocidade de vibra\u00e7\u00e3o ISO 20816<\/a>.<\/p>\n<h2>6. Problemas e Solu\u00e7\u00f5es do Entreferro<\/h2>\n<h3>Muito pequeno (abaixo da especifica\u00e7\u00e3o m\u00ednima)<\/h3>\n<p><strong>Consequ\u00eancias:<\/strong> risco de contato rotor-estator sob vibra\u00e7\u00e3o ou deflex\u00e3o; atra\u00e7\u00e3o magn\u00e9tica muito alta se o entreferro tamb\u00e9m for exc\u00eantrico; danos durante a partida ou transientes.<\/p>\n<ul>\n<li>Erro de fabrica\u00e7\u00e3o \u2192 retificar o rotor ou alargar o furo do estator.<\/li>\n<li>Rotor errado instalado \u2192 substituir pelo rotor correto.<\/li>\n<li>Desgaste do rolamento permitindo que o rotor se desloque \u2192 substituir os rolamentos e verificar se o entreferro foi restaurado.<\/li>\n<\/ul>\n<h3>Muito grande (acima da especifica\u00e7\u00e3o m\u00e1xima)<\/h3>\n<p><strong>Consequ\u00eancias:<\/strong> efici\u00eancia reduzida devido \u00e0 maior corrente de magnetiza\u00e7\u00e3o, menor fator de pot\u00eancia, torque de partida reduzido e maior corrente em vazio. Essa condi\u00e7\u00e3o geralmente \u00e9 menos cr\u00edtica \u2014 a m\u00e1quina pode operar, mas com desempenho degradado.<\/p>\n<h3>N\u00e3o uniforme (exc\u00eantrico) \u2014 o caso comum e problem\u00e1tico<\/h3>\n<p>A excentricidade \u00e9 o defeito de entreferro mais frequente e mais danoso porque \u00e9 autorrefor\u00e7ador: a FMA puxa o rotor ainda mais para fora do centro, o que aumenta a FMA. Ela geralmente cria vibra\u00e7\u00e3o de 2\u00d7 a frequ\u00eancia da rede (excentricidade est\u00e1tica) ou vibra\u00e7\u00e3o de 1\u00d7 com bandas laterais de passagem de polo (excentricidade din\u00e2mica) e acelera o desgaste dos rolamentos por meio desse loop de realimenta\u00e7\u00e3o positiva. O rem\u00e9dio \u00e9 substituir os rolamentos desgastados, corrigir qualquer distor\u00e7\u00e3o da carca\u00e7a e verificar a concentricidade do rotor.<\/p>\n<h3>Refer\u00eancia r\u00e1pida de diagn\u00f3stico<\/h3>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Sintoma<\/th>\n<th>Problema prov\u00e1vel de entreferro<\/th>\n<\/tr>\n<tr>\n<td>Alta vibra\u00e7\u00e3o de 2\u00d7 a frequ\u00eancia da rede<\/td>\n<td>Entreferro exc\u00eantrico, atra\u00e7\u00e3o magn\u00e9tica desbalanceada<\/td>\n<\/tr>\n<tr>\n<td>Bandas laterais de frequ\u00eancia de passagem de polo<\/td>\n<td>Entreferro n\u00e3o uniforme<\/td>\n<\/tr>\n<tr>\n<td>Alta corrente em vazio<\/td>\n<td>Entreferro excessivo<\/td>\n<\/tr>\n<tr>\n<td>Baixo torque de partida<\/td>\n<td>Entreferro excessivo<\/td>\n<\/tr>\n<tr>\n<td>Evid\u00eancia de atrito<\/td>\n<td>Folga de entreferro insuficiente<\/td>\n<\/tr>\n<tr>\n<td>Desgaste assim\u00e9trico do rolamento<\/td>\n<td>Entreferro exc\u00eantrico criando tra\u00e7\u00e3o magn\u00e9tica desbalanceada (UMP)<\/td>\n<\/tr>\n<\/table>\n<h2>7. Tend\u00eancias, Projeto e Fabrica\u00e7\u00e3o<\/h2>\n<p>Como a excentricidade se desenvolve lentamente, o componente de 2\u00d7 a frequ\u00eancia da rede \u00e9 um par\u00e2metro ideal para <a href=\"https:\/\/vibromera.eu\/pt-br\/glossary\/trending\/\">tend\u00eancia<\/a> ao longo da vida do motor. Um pico de 2\u00d7 em ascens\u00e3o constante sinaliza excentricidade em desenvolvimento \u2014 quase sempre devido ao desgaste dos rolamentos \u2014 e alimenta diretamente as decis\u00f5es de substitui\u00e7\u00e3o de rolamentos. A boa pr\u00e1tica \u00e9 documentar as medi\u00e7\u00f5es de folga com paqu\u00edmetro de l\u00e2minas em cada reforma e compar\u00e1-las tanto com a especifica\u00e7\u00e3o da placa de identifica\u00e7\u00e3o quanto com a leitura anterior.<\/p>\n<p>Do lado do projeto, o entreferro \u00e9 o produto de uma compensa\u00e7\u00e3o deliberada:<\/p>\n<ul>\n<li><strong>Entreferro menor:<\/strong> melhor efici\u00eancia, fator de pot\u00eancia e torque, mas maior atra\u00e7\u00e3o magn\u00e9tica quando exc\u00eantrico e menor folga mec\u00e2nica.<\/li>\n<li><strong>Entreferro maior:<\/strong> maior folga mec\u00e2nica e menor atra\u00e7\u00e3o magn\u00e9tica, mas pior efici\u00eancia e maior corrente de magnetiza\u00e7\u00e3o.<\/li>\n<li><strong>Otimiza\u00e7\u00e3o:<\/strong> o menor entreferro compat\u00edvel com os requisitos mec\u00e2nicos e as toler\u00e2ncias de fabrica\u00e7\u00e3o alcan\u00e7\u00e1veis.<\/li>\n<\/ul>\n<p>Os desenhos especificam um entreferro nominal com toler\u00e2ncias de aproximadamente \u00b110\u201320%, um limite de excentricidade (frequentemente &lt; 10%) e verifica\u00e7\u00e3o de controle de qualidade durante a fabrica\u00e7\u00e3o. Manter esse entreferro uniforme por meio de manuten\u00e7\u00e3o disciplinada dos rolamentos \u2014 e verific\u00e1-lo por meio de tend\u00eancias de vibra\u00e7\u00e3o \u2014 \u00e9 o que mant\u00e9m um motor eficiente, silencioso e seguro contra o contato catastr\u00f3fico rotor-estator que encerra a vida de uma m\u00e1quina em segundos.<\/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 air gap, the radial clearance between motor rotor and stator, critical for electromagnetic performance, efficiency, and preventing magnetic pull and rotor-stator contact.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-20618","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/glossary\/20618","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\/20618\/revisions"}],"predecessor-version":[{"id":102159,"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/glossary\/20618\/revisions\/102159"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/media?parent=20618"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/categories?post=20618"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/pt-br\/wp-json\/wp\/v2\/tags?post=20618"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}