{"id":108,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/eccentricity\/"},"modified":"2026-05-23T22:28:30","modified_gmt":"2026-05-23T22:28:30","slug":"eccentricity","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/fr\/glossary\/eccentricity\/","title":{"rendered":"Qu&#039;est-ce que l&#039;excentricit\u00e9 dans les machines tournantes ?"},"content":{"rendered":"<h1>Comprendre l&#039;excentricit\u00e9 dans les machines rotatives<\/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\/fr\/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\/fr\/product\/balanset-1\/\" title=\"\u00c9quilibreuse portable et analyseur de vibrations 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 complet \u00e9quilibreur portable et analyseur de vibrations\" 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\/fr\/product-category\/devices\/\" rel=\"tag\">Dispositifs<\/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\/fr\/product\/balanset-1\/\" title=\"\u00c9quilibreuse portable et analyseur de vibrations Balanset-1A\">\u00c9quilibreur portable et analyseur de vibrations 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> + TVA (le cas \u00e9ch\u00e9ant)<\/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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Ajouter au panier\" 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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\u00a0: \u201cPortable balancer &amp; Vibration analyzer Balanset-1A\u201d\" rel=\"nofollow\" data-success_message=\"\u00ab\u00a0Portable balancer &amp; Vibration analyzer Balanset-1A\u00a0\u00bb a \u00e9t\u00e9 ajout\u00e9 \u00e0 votre panier\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Ajouter au panier<\/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\/fr\/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\/fr\/product\/vibration-sensor\/\" title=\"Capteur de vibrations\">\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=\"Gros plan du capteur de vibrations 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\/fr\/product-category\/parts\/\" rel=\"tag\">Pi\u00e8ces d\u00e9tach\u00e9es<\/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\/fr\/product\/vibration-sensor\/\" title=\"Capteur de vibrations\">Capteur de vibrations<\/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> + TVA (le cas \u00e9ch\u00e9ant)<\/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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Ajouter au panier\" 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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\u00a0: \u201cVibration sensor\u201d\" rel=\"nofollow\" data-success_message=\"\u00ab\u00a0Vibration sensor\u00a0\u00bb a \u00e9t\u00e9 ajout\u00e9 \u00e0 votre panier\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Ajouter au panier<\/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\/fr\/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\/fr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Capteur optique (tachym\u00e8tre 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=\"Capteur optique (tachym\u00e8tre 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\/fr\/product-category\/parts\/\" rel=\"tag\">Pi\u00e8ces d\u00e9tach\u00e9es<\/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\/fr\/product\/optical-sensor-for-balanset-and-arbalance\/\" title=\"Capteur optique (tachym\u00e8tre laser)\">Capteur optique (tachym\u00e8tre 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> + TVA (le cas \u00e9ch\u00e9ant)<\/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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Ajouter au panier\" 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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\u00a0: \u201cOptical Sensor (Laser Tachometer)\u201d\" rel=\"nofollow\" data-success_message=\"\u00ab\u00a0Optical Sensor (Laser Tachometer)\u00a0\u00bb a \u00e9t\u00e9 ajout\u00e9 \u00e0 votre panier\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Ajouter au panier<\/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\/fr\/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\/fr\/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 d&#039;\u00e9quilibrage de rotor Vibromera\u00a0: mallette de transport, conditionneur de signal multicanal, analyseur portable, base magn\u00e9tique, capteurs de vibrations et c\u00e2bles enroul\u00e9s.\" 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\/fr\/product-category\/devices\/\" rel=\"tag\">Dispositifs<\/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\/fr\/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> + TVA (le cas \u00e9ch\u00e9ant)<\/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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Ajouter au panier\" 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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\u00a0: \u201cBalanset-4\u201d\" rel=\"nofollow\" data-success_message=\"\u00ab\u00a0Balanset-4\u00a0\u00bb a \u00e9t\u00e9 ajout\u00e9 \u00e0 votre panier\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Ajouter au panier<\/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\/fr\/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\/fr\/product\/magnet-stand\/\" title=\"Support magn\u00e9tique 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\u00e9tique.\" 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\/fr\/product-category\/parts\/\" rel=\"tag\">Pi\u00e8ces 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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\/fr\/product-category\/devices\/\" rel=\"tag\">Dispositifs<\/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\/fr\/product\/dynamic-balancer-balanset-1a\/\" title=\"\u00c9quilibreur dynamique &quot;Balanset-1A&quot; OEM\">\u00c9quilibreur dynamique \"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> + TVA (le cas \u00e9ch\u00e9ant)<\/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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\" data-no-translation-title=\"\"><i rel=\"tooltip\" data-original-title=\"Ajouter au panier\" 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=\"\/fr\/wp-json\/wp\/v2\/glossary\/108?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=\"Ajouter au panier\u00a0: \u201cDynamic balancer \u201cBalanset-1A\u201d OEM\u201d\" rel=\"nofollow\" data-success_message=\"\u00ab\u00a0Dynamic balancer \u201cBalanset-1A\u201d OEM\u00a0\u00bb a \u00e9t\u00e9 ajout\u00e9 \u00e0 votre panier\" data-no-translation=\"\" data-trp-gettext=\"\" data-no-translation-aria-label=\"\" data-no-translation-data-success_message=\"\">Ajouter au panier<\/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>En <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/rotor-dynamics\/\">dynamique du rotor<\/a>, <strong>excentricit\u00e9<\/strong> Il s&#x27;agit du d\u00e9calage radial entre le centre de masse d&#x27;un rotor (son centre de gravit\u00e9) et son centre g\u00e9om\u00e9trique \u2014 le v\u00e9ritable centre de son arbre. Dans un rotor parfaitement \u00e9quilibr\u00e9, ces deux centres co\u00efncideraient, mais les imperfections de fabrication et la densit\u00e9 non uniforme du mat\u00e9riau font qu&#x27;il subsiste presque toujours une certaine excentricit\u00e9. Lorsqu&#x27;un rotor excentrique tourne, la masse d\u00e9centr\u00e9e g\u00e9n\u00e8re un <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/centrifugal-force\/\">force centrifuge<\/a>, et cette force est la cause profonde de <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/unbalance\/\">d\u00e9s\u00e9quilibre<\/a> vibration. L&#x27;excentricit\u00e9, en d&#x27;autres termes, est le ph\u00e9nom\u00e8ne g\u00e9om\u00e9trique \u00e0 l&#x27;origine du d\u00e9faut le plus courant sur les machines.<\/p>\n<h2>1. D\u00e9finition : qu&#x27;est-ce que l&#x27;excentricit\u00e9 ?<\/h2>\n<p>L&#x27;excentricit\u00e9 est une distance \u2014 g\u00e9n\u00e9ralement de l&#x27;ordre de quelques microm\u00e8tres \u2014 mesur\u00e9e perpendiculairement \u00e0 l&#x27;axe de rotation, qui s\u00e9pare le point o\u00f9 la masse est r\u00e9ellement centr\u00e9e de l&#x27;endroit o\u00f9 l&#x27;arbre tourne. Comme il s&#x27;agit d&#x27;une propri\u00e9t\u00e9 li\u00e9e \u00e0 la r\u00e9partition de la masse plut\u00f4t qu&#x27;\u00e0 l&#x27;aspect de la surface, l&#x27;excentricit\u00e9 r\u00e9elle de la masse est invisible et ne peut \u00eatre mesur\u00e9e \u00e0 l&#x27;aide d&#x27;un comparateur \u00e0 cadran sur un rotor \u00e0 l&#x27;arr\u00eat. Elle ne se r\u00e9v\u00e8le que lorsque le rotor tourne et que la masse d\u00e9cal\u00e9e commence \u00e0 exercer une force centrifuge vers l&#x27;ext\u00e9rieur une fois par tour.<\/p>\n<h2>2. Le lien direct entre l&#x27;excentricit\u00e9 et le balourd<\/h2>\n<p>L&#x27;excentricit\u00e9 et le balourd sont les deux faces d&#x27;une m\u00eame m\u00e9daille. <strong>Le balourd est la mesure de l&#x27;effet de l&#x27;excentricit\u00e9 \u00e0 une vitesse donn\u00e9e ; l&#x27;excentricit\u00e9 en est la cause physique.<\/strong> L&#x27;amplitude du balourd est directement proportionnelle \u00e0 la masse du rotor et \u00e0 son excentricit\u00e9 :<\/p>\n<blockquote><p><strong>Balourd (U) = Masse (M) \u00d7 Excentricit\u00e9 (e)<\/strong><\/p><\/blockquote>\n<p>Ce produit simple explique pourquoi l&#x27;excentricit\u00e9 est si importante. La force centrifuge qu&#x27;il g\u00e9n\u00e8re augmente avec la <em>carr\u00e9<\/em> de la vitesse de rotation ; ainsi, m\u00eame une excentricit\u00e9 de quelques microm\u00e8tres sur un rotor lourd tournant \u00e0 grande vitesse peut g\u00e9n\u00e9rer une force consid\u00e9rable, provoquant de graves <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/vibration\/\">Vibrations<\/a> et rapide <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/bearing-wear\/\">usure des roulements<\/a>. Vous pouvez constater \u00e0 quel point cette force augmente fortement en fonction de la masse, de l&#x27;excentricit\u00e9 et de la vitesse \u00e0 l&#x27;aide d&#x27;un <a href=\"https:\/\/vibromera.eu\/fr\/calculators\/centrifugal-force-unbalance\/\">calculateur de la force centrifuge due au balourd<\/a>.<\/p>\n<h2>3. Types d&#x27;excentricit\u00e9<\/h2>\n<p>Il est important de distinguer la v\u00e9ritable excentricit\u00e9 des imperfections g\u00e9om\u00e9triques connexes avec lesquelles elle est souvent confondue.<\/p>\n<h3>Excentricit\u00e9 de masse<\/h3>\n<p>L&#x27;excentricit\u00e9 r\u00e9elle d\u00e9finie ci-dessus \u2014 le d\u00e9calage entre le centre de masse et le centre g\u00e9om\u00e9trique. C&#x27;est ce qui provoque le balourd et constitue l&#x27;objectif de toute proc\u00e9dure d&#x27;\u00e9quilibrage. Elle ne peut pas \u00eatre mesur\u00e9e directement \u00e0 l&#x27;aide d&#x27;un comparateur \u00e0 cadran sur un rotor \u00e0 l&#x27;arr\u00eat ; elle n&#x27;appara\u00eet qu&#x27;en r\u00e9gime, sous la forme d&#x27;une force qui se manifeste une fois par tour et dont la direction (l&#x27;angle du point lourd) est d\u00e9termin\u00e9e \u00e0 partir de la <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/phase\/\">phase<\/a> de la vibration 1\u00d7.<\/p>\n<h3>Excentricit\u00e9 g\u00e9om\u00e9trique (faux-rond)<\/h3>\n<p>Un \u00e9cart de la surface du rotor par rapport \u00e0 un cercle parfait \u2014 une mesure du &#8220;faux-rond&#8221; d&#x27;un arbre ou d&#x27;un rotor, \u00e9galement appel\u00e9 <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/run-out\/\">faux-rond m\u00e9canique<\/a>. Un tourillon peut \u00eatre l\u00e9g\u00e8rement ovale, ou une poulie usin\u00e9e de mani\u00e8re \u00e0 \u00eatre d\u00e9centr\u00e9e par rapport \u00e0 son arbre. Contrairement \u00e0 l&#x27;excentricit\u00e9 de masse, cela <em>peut<\/em> \u00eatre mesur\u00e9 \u00e0 l&#x27;aide d&#x27;un comparateur \u00e0 cadran lors d&#x27;une rotation lente. Il ne refl\u00e8te pas directement un balourd, mais une forme g\u00e9om\u00e9trique excentrique y contribue tr\u00e8s souvent. Le concept distinct mais \u00e9troitement li\u00e9 de <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/rotor-eccentricity\/\">excentricit\u00e9 du rotor<\/a> d\u00e9crit ce d\u00e9calage g\u00e9om\u00e9trique dans le contexte des moteurs et de l&#x27;entrefer.<\/p>\n<h3>Faux-rond \u00e9lectrique<\/h3>\n<p>Il ne s&#x27;agit pas du tout d&#x27;un d\u00e9faut physique, mais d&#x27;un artefact de mesure propre \u00e0 la mesure sans contact <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/proximity-probe\/\">sondes de proximit\u00e9<\/a>. Lorsque la perm\u00e9abilit\u00e9 magn\u00e9tique ou la conductivit\u00e9 \u00e9lectrique de la surface de l&#x27;arbre varie, la sonde renvoie un faux signal qui imite un faux-rond g\u00e9om\u00e9trique. Ce bruit doit \u00eatre caract\u00e9ris\u00e9 et soustrait \u2014 g\u00e9n\u00e9ralement par <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/cable-compensation\/\">compensation de c\u00e2ble<\/a> et la soustraction du faux-rond \u00e0 rotation lente \u2014 lors des essais de dynamique des rotors, sinon cela simulera un mouvement r\u00e9el de l&#x27;arbre.<\/p>\n<h2>4. Causes de l&#x27;excentricit\u00e9<\/h2>\n<p>L&#x27;excentricit\u00e9 de masse peut provenir de plusieurs sources au niveau du rotor :<\/p>\n<ul>\n<li><strong>Tol\u00e9rances de fabrication :<\/strong> Aucun processus d&#x27;usinage, de moulage ou d&#x27;assemblage n&#x27;est parfait ; de petites erreurs sont donc in\u00e9vitables.<\/li>\n<li><strong>Densit\u00e9 non uniforme du mat\u00e9riau :<\/strong> Les inclusions, les vides ou la porosit\u00e9 pr\u00e9sents dans une pi\u00e8ce moul\u00e9e ou forg\u00e9e rendent le mat\u00e9riau non homog\u00e8ne et d\u00e9placent le centre de masse.<\/li>\n<li><strong>Conception asym\u00e9trique :<\/strong> Certains composants, comme les vilebrequins, sont intrins\u00e8quement asym\u00e9triques.<\/li>\n<li><strong>Erreurs d'assemblage :<\/strong> Une poulie ou un roulement qui n&#x27;est pas parfaitement centr\u00e9 sur l&#x27;arbre cr\u00e9e une masse excentrique.<\/li>\n<li><strong>Distorsion thermique :<\/strong> un r\u00e9chauffement ou un refroidissement in\u00e9gal peut d\u00e9former un rotor, ce qui modifie temporairement son centre de masse \u2014 un <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/thermal-bow\/\">arc thermique<\/a>, souvent qualifi\u00e9 de vecteur thermique, car tant son amplitude que sa direction ont leur importance.<\/li>\n<\/ul>\n<h2>5. Comment l&#x27;excentricit\u00e9 est trait\u00e9e<\/h2>\n<p>\u00c9tant donn\u00e9 que l&#x27;excentricit\u00e9 de la masse est \u00e0 l&#x27;origine du balourd, celle-ci est corrig\u00e9e par <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/equilibrage\/\">\u00e9quilibrage<\/a>. En ajoutant ou en retirant de petites quantit\u00e9s de masse, le technicien cr\u00e9e une force centrifuge oppos\u00e9e qui ram\u00e8ne efficacement l&#x27;axe de masse du rotor vers son axe g\u00e9om\u00e9trique, r\u00e9duisant ainsi au minimum la force nette et les vibrations qui en r\u00e9sultent. Sur une machine d\u00e9j\u00e0 assembl\u00e9e, cette op\u00e9ration s&#x27;effectue sur place : un analyseur portable \u00e0 deux canaux tel que le <a href=\"https:\/\/vibromera.eu\/fr\/produit\/balanset-1\/\">Balanset-1A<\/a> mesure l&#x27;amplitude et la phase de la composante 1\u00d7 au niveau des paliers de la machine, calcule la valeur <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/correction-weight\/\">poids de correction<\/a> o\u00f9 et comment les ajouter, et v\u00e9rifie que <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/residual-unbalance\/\">balourd r\u00e9siduel<\/a> ensuite. Notez que l&#x27;\u00e9quilibrage annule le <em>effet<\/em> d&#x27;excentricit\u00e9 ; cela ne modifie pas la surface g\u00e9om\u00e9trique, de sorte qu&#x27;un rotor pr\u00e9sentant un fort faux-rond g\u00e9om\u00e9trique peut \u00eatre bien \u00e9quilibr\u00e9 tout en frottant ou en affichant une valeur \u00e9lev\u00e9e sur un capteur de proximit\u00e9.<\/p>\n<hr>\n<p><a href=\"https:\/\/vibromera.eu\/fr\/glossary\/\">\u2190 Retour \u00e0 l&#039;index principal<\/a><\/p>","protected":false},"excerpt":{"rendered":"<p>Apprenez-en plus sur l&#039;excentricit\u00e9 des machines tournantes. Comprenez la diff\u00e9rence entre l&#039;excentricit\u00e9 de masse et le faux-rond g\u00e9om\u00e9trique, et comment elle provoque directement des vibrations dues au balourd.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[109,110],"tags":[],"class_list":["post-108","glossary","type-glossary","status-publish","hentry","category-glossary","category-vibration-diagnostics"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/glossary\/108","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/glossary"}],"about":[{"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/types\/glossary"}],"version-history":[{"count":1,"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/glossary\/108\/revisions"}],"predecessor-version":[{"id":101231,"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/glossary\/108\/revisions\/101231"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/media?parent=108"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/categories?post=108"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/tags?post=108"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}