{"id":132,"date":"2025-10-31T00:25:51","date_gmt":"2025-10-31T00:25:51","guid":{"rendered":"https:\/\/vibromera.eu\/glossary\/gear-mesh-frequency\/"},"modified":"2026-05-23T22:43:17","modified_gmt":"2026-05-23T22:43:17","slug":"gear-mesh-frequency","status":"publish","type":"glossary","link":"https:\/\/vibromera.eu\/fr\/glossary\/gear-mesh-frequency\/","title":{"rendered":"Qu&#039;est-ce que la fr\u00e9quence d&#039;engr\u00e8nement ? Diagnostic de bo\u00eete d&#039;engrenages"},"content":{"rendered":"<h1>Comprendre la fr\u00e9quence d&#039;engr\u00e8nement des engrenages<\/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\/132?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\/132?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\/132?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\/132?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\/132?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\/132?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\/132?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\/132?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 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\/magnet-stand\/\" title=\"Support magn\u00e9tique Insize - 60 kgf\">Support magn\u00e9tique Insize - 60 kgf<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>46.00<\/span> + 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\/132?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=\"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\/132?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=\"Ajouter au panier\u00a0: \u201cMagnetic Stand Insize-60-kgf\u201d\" rel=\"nofollow\" data-success_message=\"\u00ab\u00a0Magnetic Stand Insize-60-kgf\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_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\/fr\/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\/fr\/product\/reflective-tape\/\" title=\"Bande r\u00e9fl\u00e9chissante\">\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=\"Bande r\u00e9fl\u00e9chissante\" 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\/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\/reflective-tape\/\" title=\"Bande r\u00e9fl\u00e9chissante\">Bande r\u00e9fl\u00e9chissante<\/a>\n\n\t\t\t\t\t\t\t\t<\/h4>\n\n\t\t\t\t\t\t\t\t\n\t\t\t\t\t\t\t\t<div class=\"footer\">\n\n\t\t\t\t\t\t\t\t\t<div class=\"price\"><h4><span class=\"woocommerce-Price-amount amount\"><span class=\"woocommerce-Price-currencySymbol\">\u20ac<\/span>10.00<\/span> + 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\/132?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=\"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\/132?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=\"Ajouter au panier\u00a0: \u201cReflective tape\u201d\" rel=\"nofollow\" data-success_message=\"\u00ab\u00a0Reflective tape\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_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\/fr\/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\/fr\/product\/dynamic-balancer-balanset-1a\/\" title=\"\u00c9quilibreur dynamique &quot;Balanset-1A&quot; OEM\">\n\t\t\t\t\t\t\t\t\t\t<img loading=\"lazy\" decoding=\"async\" width=\"230\" height=\"153\" src=\"https:\/\/vibromera.eu\/wp-content\/uploads\/2021\/11\/\u0411\u0430\u043b\u043a\u043e\u043c\u041a\u0438\u0442-scaled-230x153.webp\" class=\"attachment-woocommerce_thumbnail size-woocommerce_thumbnail\" alt=\"Kit Balanset-1A comprenant l&#039;unit\u00e9 d&#039;interface, les capteurs, le tachym\u00e8tre et les accessoires\" 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\/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\/132?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\/132?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><strong>Fr\u00e9quence d&#039;engr\u00e8nement<\/strong> (GMF \u2014 \u00e9galement appel\u00e9e fr\u00e9quence d&#x27;engr\u00e8nement ou fr\u00e9quence d&#x27;engagement des dents) est la <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/vibration\/\">Vibrations<\/a> fr\u00e9quence g\u00e9n\u00e9r\u00e9e lorsque les dents des engrenages entrent en contact et s&#x27;en s\u00e9parent pendant la rotation. Elle s&#x27;obtient en multipliant le nombre de dents d&#x27;un engrenage par la vitesse de rotation de cet engrenage : <strong>GMF = (nombre de dents \u00d7 tr\/min) \/ 60<\/strong>. Le GMF est g\u00e9n\u00e9ralement le pic dominant dans une bo\u00eete de vitesses <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/spectrum\/\">spectre de vibrations<\/a>, ainsi que son amplitude, son <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/harmonics\/\">harmoniques<\/a>, et le <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/sidebands\/\">bandes lat\u00e9rales<\/a> les \u00e9tiquettes qui l&#x27;entourent fournissent des informations d\u00e9taill\u00e9es sur l&#x27;\u00e9tat du mat\u00e9riel \u2014 usure, <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/misalignment\/\">d\u00e9salignement<\/a>, les d\u00e9fauts dentaires et l&#x27;ad\u00e9quation de la lubrification. Le suivi du GMF constitue donc la base du diagnostic des r\u00e9ducteurs et un \u00e9l\u00e9ment essentiel pour identifier <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/gear-defects\/\">d\u00e9fauts d&#039;engrenage<\/a> avant qu&#x27;ils ne se solde par un \u00e9chec.<\/p>\n<h2>1. Calcul de la fr\u00e9quence d&#x27;engr\u00e8nement<\/h2>\n<h3>Formule de base<\/h3>\n<p>Le GMF peut \u00eatre calcul\u00e9 \u00e0 partir de l&#x27;un ou l&#x27;autre des \u00e9l\u00e9ments d&#x27;une paire d&#x27;engrenages, et les deux doivent donner le m\u00eame r\u00e9sultat, car les dents s&#x27;engr\u00e8nent \u00e0 une seule vitesse commune :<\/p>\n<ul>\n<li><strong>GMF = N<sub>pignon<\/sub> \u00d7 tr\/min<sub>pignon<\/sub> \/ 60<\/strong> (provenant du pignon)<\/li>\n<li><strong>GMF = N<sub>engrenage<\/sub> \u00d7 tr\/min<sub>engrenage<\/sub> \/ 60<\/strong> (depuis l\u2019engrenage)<\/li>\n<\/ul>\n<p>Ces deux valeurs sont \u00e9quivalentes, car le rapport de vitesse est l&#x27;inverse du rapport du nombre de dents. Notez que le GMF n&#x27;est pas un simple <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/running-speed\/\">vitesse de rotation<\/a> harmonique \u2014 c&#x27;est le produit du nombre de dents par la vitesse de rotation de l&#x27;arbre, ce qui donne g\u00e9n\u00e9ralement un r\u00e9sultat bien sup\u00e9rieur \u00e0 1\u00d7.<\/p>\n<h3>Exemples pratiques<\/h3>\n<h4>Exemple 1 \u2014 Bo\u00eete de vitesses simple<\/h4>\n<ul>\n<li><strong>Entr\u00e9e (pignon)\u00a0:<\/strong> 20 dents \u00e0 1 800 tr\/min<\/li>\n<li><strong>Sortie (engrenage)\u00a0:<\/strong> 60 dents \u00e0 600 tr\/min<\/li>\n<li><strong>GMF = 20 \u00d7 1 800 \/ 60 = 600 Hz<\/strong><\/li>\n<li><strong>V\u00e9rifier:<\/strong> 60 \u00d7 600 \/ 60 = 600 Hz \u2713<\/li>\n<\/ul>\n<h4>Exemple 2 \u2014 Bo\u00eete de vitesses \u00e0 plusieurs rapports<\/h4>\n<ul>\n<li><strong>Premier \u00e9tage :<\/strong> 18 dents \u00e0 3 600 tr\/min \u2192 GMF\u2081 = 1 080 Hz<\/li>\n<li><strong>Deuxi\u00e8me \u00e9tage :<\/strong> 25 dents \u00e0 1 200 tr\/min \u2192 GMF\u2082 = 500 Hz<\/li>\n<li><strong>Troisi\u00e8me \u00e9tage :<\/strong> 30 dents \u00e0 400 tr\/min \u2192 GMF\u2083 = 200 Hz<\/li>\n<li><strong>Spectre:<\/strong> pr\u00e9sente un pic distinct pour chaque niveau, ainsi que des harmoniques et des bandes lat\u00e9rales.<\/li>\n<\/ul>\n<p>Les calculer \u00e0 la main \u00e0 chaque \u00e9tape est fastidieux ; le <a href=\"https:\/\/vibromera.eu\/fr\/calculators\/gear-mesh-frequency\/\">Calculateur de fr\u00e9quence d&#039;engr\u00e8nement<\/a> renvoie instantan\u00e9ment la GMF et l&#x27;espacement pr\u00e9vu entre les bandes lat\u00e9rales, et le <a href=\"https:\/\/vibromera.eu\/fr\/calculators\/harmonic-frequency-calculator\/\">Calculateur de fr\u00e9quence harmonique<\/a> permet de d\u00e9terminer les ordres de vitesse de l&#x27;arbre environnant.<\/p>\n<h2>2. Le GMF dans le spectre vibratoire<\/h2>\n<h3>Une bo\u00eete de vitesses en bon \u00e9tat<\/h3>\n<ul>\n<li><strong>Pic FED :<\/strong> un pic unique et net \u00e0 la fr\u00e9quence calcul\u00e9e.<\/li>\n<li><strong>Amplitude :<\/strong> mod\u00e9r\u00e9e et constante dans le temps.<\/li>\n<li><strong>Harmoniques :<\/strong> Il peut y avoir 2\u00d7GMF et 3\u00d7GMF, mais en faible quantit\u00e9 (moins d&#x27;environ 25 % de GMF).<\/li>\n<li><strong>Bandes lat\u00e9rales :<\/strong> minime ou inexistante.<\/li>\n<li><strong>Vitesses de rotation :<\/strong> les pics de 1\u00d7 pour les arbres d&#x27;entr\u00e9e et de sortie se situent bien en dessous du GMF.<\/li>\n<\/ul>\n<h3>Signatures anormales<\/h3>\n<h4>Amplitude GMF \u00e9lev\u00e9e<\/h4>\n<p>Une augmentation de l&#x27;amplitude du GMF au fil du temps indique une usure g\u00e9n\u00e9rale des engrenages, un d\u00e9salignement ou une charge \u00e9lev\u00e9e. Il convient alors d&#x27;augmenter la fr\u00e9quence de surveillance et de pr\u00e9voir une inspection.<\/p>\n<h4>Harmoniques GMF multiples<\/h4>\n<p>Des pics marqu\u00e9s de 2\u00d7GMF, 3\u00d7GMF et 4\u00d7GMF indiquent des d\u00e9fauts au niveau des dents, une usure importante ou un mauvais profil de contact \u2014 en gros, plus il y a d&#x27;harmoniques, plus l&#x27;\u00e9tat est grave.<\/p>\n<h4>Bandes lat\u00e9rales autour de GMF<\/h4>\n<p>Les bandes lat\u00e9rales correspondent \u00e0 la modulation du GMF en fonction de la vitesse de rotation de l&#x27;arbre, et elles permettent de localiser avec pr\u00e9cision <em>qui<\/em> C&#x27;est la transmission qui est en cause :<\/p>\n<ul>\n<li><strong>Bandes lat\u00e9rales du pignon :<\/strong> GMF \u00b1 vitesse de l&#x27;arbre d&#x27;entr\u00e9e \u2192 d\u00e9faut du pignon.<\/li>\n<li><strong>Raies lat\u00e9rales d'engrenage :<\/strong> GMF \u00b1 vitesse de l&#x27;arbre de sortie \u2192 d\u00e9faut au niveau de l&#x27;engrenage men\u00e9.<\/li>\n<li><strong>Bandes lat\u00e9rales multiples :<\/strong> GMF \u00b1 n \u00d7 (vitesse de rotation de l&#x27;arbre) \u2192 d\u00e9fauts localis\u00e9s au niveau des dents.<\/li>\n<li><strong>Bandes lat\u00e9rales asym\u00e9triques :<\/strong> plus r\u00e9sistant d&#x27;un c\u00f4t\u00e9 \u2192 un engrenage excentrique ou un pas de denture in\u00e9gal.<\/li>\n<\/ul>\n<h2>3. Interpr\u00e9tation des r\u00e9sultats<\/h2>\n<h3>Aper\u00e7u de l&#x27;\u00e9valuation de l&#x27;\u00e9tat<\/h3>\n<table border=\"1\" style=\"width:100%; border-collapse:collapse;\">\n<tr>\n<th>Condition<\/th>\n<th>Amplitude GMF<\/th>\n<th>Harmoniques<\/th>\n<th>bandes lat\u00e9rales<\/th>\n<\/tr>\n<tr>\n<td>Neuf \/ bon \u00e9tat<\/td>\n<td>Bas, stable<\/td>\n<td>Minime (&lt; 25 % du GMF)<\/td>\n<td>Absent ou tr\u00e8s petit<\/td>\n<\/tr>\n<tr>\n<td>Usure normale<\/td>\n<td>Augmentation mod\u00e9r\u00e9e et progressive<\/td>\n<td>2\u00d7GMF pr\u00e9sent mais faible<\/td>\n<td>De petites bandes lat\u00e9rales apparaissent<\/td>\n<\/tr>\n<tr>\n<td>Usure mod\u00e9r\u00e9e<\/td>\n<td>\u00c9lev\u00e9, et toujours en hausse<\/td>\n<td>2\u00d7, 3\u00d7GMF visible<\/td>\n<td>Bandes lat\u00e9rales nettes aux fr\u00e9quences de l&#x27;arbre \u00b1<\/td>\n<\/tr>\n<tr>\n<td>Usure importante \/ dommages importants<\/td>\n<td>Tr\u00e8s \u00e9lev\u00e9<\/td>\n<td>Harmoniques multiples (4\u00d7, 5\u00d7+)<\/td>\n<td>Familles \u00e0 bandes lat\u00e9rales multiples<\/td>\n<\/tr>\n<tr>\n<td>D\u00e9faut localis\u00e9<\/td>\n<td>Mod\u00e9r\u00e9<\/td>\n<td>Pr\u00e9sent<\/td>\n<td>Bandes lat\u00e9rales fortes et r\u00e9guli\u00e8rement espac\u00e9es<\/td>\n<\/tr>\n<\/table>\n<h3>Signatures de d\u00e9fauts sp\u00e9cifiques<\/h3>\n<ul>\n<li><strong>D\u00e9salignement des engrenages :<\/strong> harmoniques de 2\u00d7GMF et 3\u00d7GMF \u00e9lev\u00e9es, souvent accompagn\u00e9es d&#x27;une augmentation <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/axial-vibration\/\">vibrations axiales<\/a>; corrig\u00e9 en r\u00e9alignant les engrenages.<\/li>\n<li><strong>Engrenage excentrique :<\/strong> des bandes lat\u00e9rales marqu\u00e9es \u00e0 \u00b11\u00d7 la vitesse de rotation de l&#x27;arbre de l&#x27;engrenage excentrique, le contact entre les dents variant une fois par tour \u2014 ce qui se traduit par une modulation d&#x27;amplitude dans le <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/time-waveform\/\">forme d&#039;onde temporelle<\/a>.<\/li>\n<li><strong>Dent cass\u00e9e ou f\u00eal\u00e9e :<\/strong> des bandes lat\u00e9rales de forte amplitude \u00e0 l&#x27;intervalle correspondant \u00e0 la vitesse de l&#x27;arbre, un choc par tour de l&#x27;engrenage d\u00e9fectueux, des \u00e9v\u00e9nements impulsifs dans la courbe de temps et une augmentation rapide de l&#x27;amplitude.<\/li>\n<li><strong>Lubrification insuffisante :<\/strong> une augmentation de l&#x27;amplitude du GMF due \u00e0 une friction accrue, \u00e0 une hausse du bruit \u00e0 haute fr\u00e9quence et \u00e0 une \u00e9l\u00e9vation de la temp\u00e9rature dans la bo\u00eete de vitesses.<\/li>\n<\/ul>\n<p>Jeu excessif provenant de <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/backlash\/\">jeu (backlash)<\/a> peut brouiller davantage ces signaux en laissant les dents cliqueter \u00e0 chaque enclenchement.<\/p>\n<h2>4. Le GMF et la r\u00e9sonance structurelle<\/h2>\n<p>Le GMF se situe souvent dans une bande capable d&#x27;exciter des modes structurels, amplifiant ainsi ce qui serait autrement une source de faible intensit\u00e9 :<\/p>\n<ul>\n<li><strong>GMF typique :<\/strong> 200 \u00e0 2 000 Hz pour les r\u00e9ducteurs industriels.<\/li>\n<li><strong>Fr\u00e9quences propres du ch\u00e2ssis :<\/strong> souvent entre 50 et 500 Hz.<\/li>\n<li><strong>Le risque :<\/strong> Le GMF ou l'une de ses harmoniques co\u00efncide avec un bo\u00eetier ou un ch\u00e2ssis <a href=\"https:\/\/vibromera.eu\/fr\/glossary\/structural-resonance\/\">r\u00e9sonance structurelle<\/a>.<\/li>\n<li><strong>Le r\u00e9sultat :<\/strong> un grincement bruyant de l&#x27;engrenage et des vibrations excessives du carter.<\/li>\n<li><strong>Les solutions :<\/strong> renforcer le bo\u00eetier, ajouter un amortissement ou modifier le nombre de dents afin de faire sortir le GMF de la zone de r\u00e9sonance.<\/li>\n<\/ul>\n<h2>5. \u00c9laboration d&#x27;une strat\u00e9gie de suivi<\/h2>\n<h3>Valeurs de r\u00e9f\u00e9rence et tendances<\/h3>\n<p>Enregistrez l&#x27;amplitude du GMF \u2014 ainsi que les niveaux des harmoniques normales et des bandes lat\u00e9rales \u2014 lorsque la bo\u00eete de vitesses est neuve ou vient d&#x27;\u00eatre r\u00e9vis\u00e9e, et utilisez ces donn\u00e9es comme r\u00e9f\u00e9rence pour toutes les mesures suivantes. Les param\u00e8tres dont l&#x27;\u00e9volution est la plus utile sont les suivants :<\/p>\n<ul>\n<li><strong>Amplitude GMF :<\/strong> le principal indicateur de l&#x27;\u00e9tat g\u00e9n\u00e9ral de l&#x27;\u00e9quipement.<\/li>\n<li><strong>Rapports harmoniques :<\/strong> Une augmentation du rapport 2\u00d7GMF\/GMF ou 3\u00d7GMF\/GMF indique une d\u00e9t\u00e9rioration.<\/li>\n<li><strong>\u00c9nergie de la bande lat\u00e9rale :<\/strong> l&#x27;amplitude totale des familles de bandes lat\u00e9rales.<\/li>\n<li><strong>Contenu haute fr\u00e9quence :<\/strong> Les signaux \u00e0 large bande dans la gamme de 5 \u00e0 50 kHz refl\u00e8tent l&#x27;\u00e9tat de la surface dentaire.<\/li>\n<\/ul>\n<h3>Niveaux d&#039;alarme<\/h3>\n<ul>\n<li><strong>Alerte :<\/strong> Amplitude GMF \u00e0 2 fois la valeur de r\u00e9f\u00e9rence.<\/li>\n<li><strong>Alarme :<\/strong> Une amplitude GMF quatre fois sup\u00e9rieure \u00e0 la valeur de r\u00e9f\u00e9rence, ou toute augmentation rapide.<\/li>\n<li><strong>Critique :<\/strong> plusieurs harmoniques puissantes, des bandes lat\u00e9rales \u00e9tendues ou un signal 10 fois sup\u00e9rieur \u00e0 la ligne de base.<\/li>\n<\/ul>\n<h3>Mesure du GMF sur le terrain<\/h3>\n<p>Pour capturer correctement le GMF, ses harmoniques et ses bandes lat\u00e9rales, il faut disposer d&#x27;une bande passante et d&#x27;une r\u00e9solution suffisantes pour distinguer des raies tr\u00e8s proches les unes des autres. Un analyseur portable \u00e0 deux canaux tel que le <a href=\"https:\/\/vibromera.eu\/fr\/produit\/balanset-1\/\">Balanset-1A<\/a> enregistre sur site le spectre de la bo\u00eete de vitesses et la courbe temporelle, permettant ainsi \u00e0 un ing\u00e9nieur de lire directement le pic de GMF et ses bandes lat\u00e9rales \u2014 et, lorsqu&#x27;une augmentation du rapport 1\u00d7 indique qu&#x27;un ventilateur ou un accouplement associ\u00e9 est \u00e9galement d\u00e9s\u00e9quilibr\u00e9, d&#x27;effectuer l&#x27;\u00e9quilibrage sur site lors de la m\u00eame intervention. Utilis\u00e9e de cette mani\u00e8re, l&#x27;analyse de la fr\u00e9quence d&#x27;engr\u00e8nement permet de d\u00e9tecter les probl\u00e8mes li\u00e9s aux engrenages bien avant une d\u00e9faillance catastrophique, transformant ainsi les pannes impr\u00e9vues en op\u00e9rations de maintenance planifi\u00e9es.<\/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>D\u00e9couvrez la fr\u00e9quence d&#039;engr\u00e8nement (GMF), la fr\u00e9quence de vibration g\u00e9n\u00e9r\u00e9e par l&#039;engagement des dents d&#039;engrenage, essentielle pour diagnostiquer l&#039;usure des engrenages, le d\u00e9salignement et les d\u00e9fauts des dents.<\/p>","protected":false},"featured_media":0,"template":"","meta":{"ai_generated_summary":"","footnotes":""},"categories":[114,109],"tags":[],"class_list":["post-132","glossary","type-glossary","status-publish","hentry","category-analysis","category-glossary"],"_links":{"self":[{"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/glossary\/132","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\/132\/revisions"}],"predecessor-version":[{"id":101336,"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/glossary\/132\/revisions\/101336"}],"wp:attachment":[{"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/media?parent=132"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/categories?post=132"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/vibromera.eu\/fr\/wp-json\/wp\/v2\/tags?post=132"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}