{"id":3647,"date":"2023-11-14T04:39:41","date_gmt":"2023-11-14T04:39:41","guid":{"rendered":"https:\/\/www.coomcool.com\/?p=3647"},"modified":"2024-09-14T07:34:29","modified_gmt":"2024-09-14T07:34:29","slug":"analysis-of-common-causes-of-chain-failure","status":"publish","type":"post","link":"https:\/\/www.coomcool.com\/fr\/analysis-of-common-causes-of-chain-failure\/","title":{"rendered":"Analyse des causes courantes de d\u00e9faillance des cha\u00eenes"},"content":{"rendered":"<div data-elementor-type=\"wp-post\" data-elementor-id=\"3647\" class=\"elementor elementor-3647\" data-elementor-post-type=\"post\">\n\t\t\t\t<div class=\"wd-negative-gap elementor-element elementor-element-c751267 e-flex e-con-boxed e-con e-parent\" data-id=\"c751267\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-2c841db elementor-widget elementor-widget-wd_text_block\" data-id=\"2c841db\" data-element_type=\"widget\" data-widget_type=\"wd_text_block.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"wd-text-block reset-last-child text-left\">\n\t\t\t\n\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><blockquote><div class=\"ace-line ace-line old-record-id-FggpdlBB9oOc6rxnOFfcyOH1n2J\">Les cha\u00eenes sont largement utilis\u00e9es dans diverses applications d'entra\u00eenement et de transport. Cependant, un fonctionnement continu \u00e0 long terme peut entra\u00eener divers probl\u00e8mes. Vous trouverez ci-dessous les causes courantes de d\u00e9faillance des cha\u00eenes.<\/div><\/blockquote><\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"wd-negative-gap elementor-element elementor-element-ca99ea0 e-flex e-con-boxed e-con e-parent\" data-id=\"ca99ea0\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-41d4d14 elementor-widget__width-initial elementor-widget elementor-widget-wd_table\" data-id=\"41d4d14\" data-element_type=\"widget\" data-widget_type=\"wd_table.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t\t\t<div class=\"wd-el-table-wrap wd-reset-all-last\">\n\t\t\t<table class=\"wd-el-table\">\n\t\t\t\t\t\t\t\t\t<thead class=\"text-center\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-d480911\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<th class=\"wd-table-cell elementor-repeater-item-37c0c74\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-P9NCdOwGeododXxmDiwcgbnmnch\">Causes d'\u00e9chec<\/div><\/div>\t\t\t\t\t\t\t\t<\/th>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<th class=\"wd-table-cell elementor-repeater-item-0ee2ebd\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-Kak9d5IE6o972pxVJ2KcyfXJnzD\">Illustration<\/div><\/div>\t\t\t\t\t\t\t\t<\/th>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t<\/thead>\n\t\t\t\t\n\t\t\t\t<tbody class=\"text-left\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-6cfcc38\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-316bbc7\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-HYZUdsnkMohSjnxYHDNcGijwn6g\" style=\"text-align: center\">Rupture de la broche - Corrosion Fatigue<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-51a3aa1\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img fetchpriority=\"high\" decoding=\"async\" class=\"size-full wp-image-3634 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue.jpg\" alt=\"\" width=\"1815\" height=\"481\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue.jpg 1815w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue-300x80.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue-1024x271.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue-768x204.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue-1536x407.jpg 1536w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue-18x5.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue-1200x318.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/1.Pin-Fracture-Corrosion-Fatigue-150x40.jpg 150w\" sizes=\"(max-width: 1815px) 100vw, 1815px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-e69a603\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-53aa766\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-Mo3qdXzzcoX7B0xgyEJck16Entc\" data-list=\"bullet\"><div>Lorsqu'une charge est appliqu\u00e9e \u00e0 la cha\u00eene, elle s'accumule entre la \"face arri\u00e8re\" de l'axe et les parois int\u00e9rieures du maillon ou de la douille.<\/div><\/li><li class=\"ace-line ace-line old-record-id-LVA5dK5LUoVydyxGjZKc1Arkncf\" data-list=\"bullet\"><div>Si l'axe de cha\u00eene fonctionne dans des conditions o\u00f9 il y a de l'eau, des compos\u00e9s acido-basiques ou des situations o\u00f9 l'eau g\u00e9n\u00e8re de l'acide, et s'il n'est pas prot\u00e9g\u00e9, les zones expos\u00e9es de l'axe sont susceptibles d'\u00eatre corrod\u00e9es et piqu\u00e9es.<\/div><\/li><li class=\"ace-line ace-line old-record-id-AVPRds0skoOZSxxKE77cIXCZnDe\" data-list=\"bullet\"><div>Comme tout \u00e9l\u00e9ment structurel, l'axe de cha\u00eene se plie l\u00e9g\u00e8rement sous l'effet de la charge. Dans ce cas, la surface arri\u00e8re de l'axe est \u00e9tir\u00e9e ou sous tension, et si l'axe a d\u00e9j\u00e0 \u00e9t\u00e9 corrod\u00e9, chaque creux devient un point de concentration des contraintes.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-60e785d\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-ba2809e\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-GEfzd0JePoRa3rxEYWUcCJfKngg\" style=\"text-align: center\">Usure des goupilles - Abrasion, lubrification insuffisante ou d\u00e9faillance<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-055dcab\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img decoding=\"async\" class=\"size-full wp-image-3635 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure.jpg\" alt=\"\" width=\"1808\" height=\"431\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure.jpg 1808w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure-300x72.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure-1024x244.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure-768x183.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure-1536x366.jpg 1536w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure-18x4.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure-1200x286.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/2.Pin-Wear-Abrasion-Insufficient-Lubrication-or-Failure-150x36.jpg 150w\" sizes=\"(max-width: 1808px) 100vw, 1808px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-8cb6055\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-2e3e389\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-FBVRdlEr3oXhSwx9VS2chNwqnX7\" data-list=\"bullet\"><div>La pr\u00e9sence de mat\u00e9riaux abrasifs ou d'un film d'huile inefficace entre les surfaces des roulements acc\u00e9l\u00e8re l'usure. L'axe illustr\u00e9 ici fonctionne dans une cha\u00eene de transmission de puissance expos\u00e9e au sable et \u00e0 la salet\u00e9.<\/div><\/li><li class=\"ace-line ace-line old-record-id-AfoudbZZgoVPmOxNj8Gc4JrBnSe\" data-list=\"bullet\"><div>Ces mat\u00e9riaux abrasifs p\u00e9n\u00e8trent dans les maillons et provoquent une usure rapide de l'axe, ce qui r\u00e9duit consid\u00e9rablement la dur\u00e9e de vie de la cha\u00eene.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-0fb8dec\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-1611f8e\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-BrXIdWyegopEckxm40ecFlElnTb\" style=\"text-align: center\">\u00c9raflure des goupilles - Film d'huile insuffisant entre les surfaces de roulement<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-02bcc92\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img decoding=\"async\" class=\"size-full wp-image-3636 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces.jpg\" alt=\"\" width=\"1268\" height=\"1001\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces.jpg 1268w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces-300x237.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces-1024x808.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces-768x606.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces-15x12.jpg 15w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces-1200x947.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/3.Pin-Scuffing-Insufficient-Oil-Film-Between-Bearing-Surfaces-150x118.jpg 150w\" sizes=\"(max-width: 1268px) 100vw, 1268px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-1fc85c3\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-5c4ce9b\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-SlxmdHsFDoZT0Fxj8iTcXfd8nhe\" data-list=\"bullet\"><div>Si le film d'huile est insuffisant pour supporter la charge ou si la lubrification cesse pour une raison quelconque, l'axe de la cha\u00eene devient rugueux.<\/div><\/li><li class=\"ace-line ace-line old-record-id-Fntcd3j5XoNj2axeEDGc4vhSnyb\" data-list=\"bullet\"><div>Naturellement, l'intensit\u00e9 de l'usure d\u00e9pend du degr\u00e9 et de la dur\u00e9e du contact m\u00e9tal-m\u00e9tal. M\u00eame une courte p\u00e9riode de fonctionnement dans des conditions de charge inhabituellement s\u00e9v\u00e8res ou \u00e0 des vitesses tr\u00e8s \u00e9lev\u00e9es peut entra\u00eener une usure pr\u00e9coce ou mod\u00e9r\u00e9e. Ce type d'\u00e9raflures peut ne pas affecter de mani\u00e8re significative la dur\u00e9e de vie de la cha\u00eene et, si des mesures pr\u00e9ventives sont prises \u00e0 temps, la situation peut ne pas s'aggraver.<\/div><\/li><li class=\"ace-line ace-line old-record-id-Ga0bdUReZomsfLx47x7cyzwOnWg\" data-list=\"bullet\"><div>Une usure plus importante peut \u00eatre observ\u00e9e lorsque les cha\u00eenes \u00e0 usage intensif fonctionnent \u00e0 des vitesses tr\u00e8s \u00e9lev\u00e9es ou tr\u00e8s basses. \u00c0 des vitesses \u00e9lev\u00e9es, l'usure des axes peut se produire parce que le temps entre les cycles de charge est insuffisant pour former un film d'huile ad\u00e9quat. \u00c0 tr\u00e8s basse vitesse, la pression \u00e9lev\u00e9e des roulements peut faire sortir le lubrifiant, et des charges lourdes continues peuvent emp\u00eacher le lubrifiant de se reformer entre les surfaces des roulements.<\/div><\/li><li class=\"ace-line ace-line old-record-id-DtI1dKT4eojgRIxX998c2WjfnVh\" data-list=\"bullet\"><div>Certaines variations de charge et de vitesse permettent g\u00e9n\u00e9ralement au lubrifiant de fonctionner efficacement, r\u00e9duisant ainsi la tendance \u00e0 l'usure des goupilles.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-b4645d3\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-409606c\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-H9lBdDQcdoM0PlxqVN2c05eOnKP\" style=\"text-align: center\">Cisaillement des goupilles - Surcharge soudaine et s\u00e9v\u00e8re<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-d98ca66\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3637 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/4.Pin-Shearing-Sudden-Severe-Overload.png\" alt=\"\" width=\"1090\" height=\"357\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/4.Pin-Shearing-Sudden-Severe-Overload.png 1090w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/4.Pin-Shearing-Sudden-Severe-Overload-300x98.png 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/4.Pin-Shearing-Sudden-Severe-Overload-1024x335.png 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/4.Pin-Shearing-Sudden-Severe-Overload-768x252.png 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/4.Pin-Shearing-Sudden-Severe-Overload-18x6.png 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/4.Pin-Shearing-Sudden-Severe-Overload-150x49.png 150w\" sizes=\"(max-width: 1090px) 100vw, 1090px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-efb2d17\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-d7cf221\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-GSfTdcmfYoctKNxLItRcb6XMnic\" data-list=\"bullet\"><div>Si une s\u00e9paration des broches se produit, elle peut g\u00e9n\u00e9ralement \u00eatre attribu\u00e9e \u00e0 une surcharge soudaine et anormale. Un blocage inattendu est une cause fr\u00e9quente.<\/div><\/li><li class=\"ace-line ace-line old-record-id-V1XidrSrqo5RLjxLhZXc70KInwf\" data-list=\"bullet\"><div>Comme le montre l'illustration, une forte charge d'impact a \u00e9t\u00e9 appliqu\u00e9e \u00e0 une cha\u00eene d\u00e9j\u00e0 lourdement charg\u00e9e, ce qui a entra\u00een\u00e9 le cisaillement de l'axe. Le cisaillement de l'axe se caract\u00e9rise par une section transversale ronde et relativement lisse. Comme le cisaillement d'un axe peut \u00eatre attribu\u00e9 \u00e0 des conditions de charge anormales, la cause peut g\u00e9n\u00e9ralement \u00eatre identifi\u00e9e et des mesures pr\u00e9ventives peuvent \u00eatre prises.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-198b96c\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-3236ad4\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-EVM6d5uwIozJNUxUEa3cZA2fnWd\" style=\"text-align: center\">Pliage des goupilles - Surcharge<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-d0e11f3\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3638 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload.jpg\" alt=\"\" width=\"1464\" height=\"494\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload.jpg 1464w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload-300x101.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload-1024x346.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload-768x259.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload-18x6.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload-1200x405.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/5.Pin-Bending-Overload-150x51.jpg 150w\" sizes=\"(max-width: 1464px) 100vw, 1464px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-096534a\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-9adf152\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-LTcZdWZDtoaNkDx6q8bc3sldn3w\" data-list=\"bullet\"><div>La flexion de l'axe r\u00e9sulte g\u00e9n\u00e9ralement de l'application d'une charge soudaine suffisamment forte pour provoquer une d\u00e9formation permanente, mais insuffisante pour provoquer un cisaillement de l'axe. Cela se produit lorsque la cha\u00eene d'entra\u00eenement fonctionne au-del\u00e0 de sa capacit\u00e9 de charge nominale.<\/div><\/li><li class=\"ace-line ace-line old-record-id-BlzMdxrTUotz5FxXyJvcTXkVnqg\" data-list=\"bullet\"><div>Ce ph\u00e9nom\u00e8ne est observable sur les cha\u00eenes de convoyage \u00e0 usage intensif, o\u00f9 une augmentation soudaine de la charge d'impact d\u00e9passe la capacit\u00e9 de travail normale de la cha\u00eene. Des mesures correctives sont g\u00e9n\u00e9ralement prises pour r\u00e9duire la gravit\u00e9 ou la probabilit\u00e9 de la surcharge.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-6d0a098\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-1620272\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-YlbGdJAGWo01QSxdznMc2BoBnab\" style=\"text-align: center\">\u00c9rosion des goupilles et des douilles - Eau, mat\u00e9riaux abrasifs et corrosifs<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-98f18b5\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3639 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials.jpg\" alt=\"\" width=\"1379\" height=\"937\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials.jpg 1379w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials-300x204.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials-1024x696.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials-768x522.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials-18x12.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials-1200x815.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/6.Pin-and-Bushing-Erosion-Water-Abrasive-and-Corrosive-Materials-150x102.jpg 150w\" sizes=\"(max-width: 1379px) 100vw, 1379px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-6438327\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-fe92d20\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-RbLzdQvFWo40qpxdqbKcrANJn2e\" data-list=\"bullet\"><div>Les surfaces d'appui des maillons de la cha\u00eene peuvent se corroder lorsque la cha\u00eene fonctionne en pr\u00e9sence d'eau, de mat\u00e9riaux abrasifs et corrosifs. L'\u00e9tendue et la vitesse de l'\u00e9rosion d\u00e9pendent de la gravit\u00e9 des conditions.<\/div><\/li><li class=\"ace-line ace-line old-record-id-SmvvdZMLGostxZxJl9dckYHPn3d\" data-list=\"bullet\"><div>L'\u00e9rosion est un processus continu au cours duquel les contaminants abrasifs et l'eau se combinent pour \u00e9liminer les particules d'acier de la surface du roulement, r\u00e9duisant progressivement la section transversale de l'axe et de la bague.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-c03aa11\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-cdc271b\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-NlhWdoJnFoRtPoxLQj4cWBkinNb\" style=\"text-align: center\">Grippage des joints - Corrosion, usure ou remplissage des joints<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-204d63b\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3640 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints.jpg\" alt=\"\" width=\"1260\" height=\"814\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints.jpg 1260w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints-300x194.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints-1024x662.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints-768x496.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints-18x12.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints-1200x775.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/7.Joint-Seizing-Corrosion-Wear-or-Filling-of-Joints-150x97.jpg 150w\" sizes=\"(max-width: 1260px) 100vw, 1260px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-b47ebae\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-252208c\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-Vjiidsg4YoEzWbxddOqcPluVnje\" data-list=\"bullet\"><div>Si les surfaces de roulement sont fortement corrod\u00e9es ou us\u00e9es, ou si les espaces entre les pi\u00e8ces de l'articulation sont remplis de mat\u00e9riaux susceptibles de durcir, les articulations sont susceptibles de se gripper ou de coller.<\/div><\/li><li class=\"ace-line ace-line old-record-id-YBM0dPPedoR94LxmAOQcOcmBnLb\" data-list=\"bullet\"><div>Lorsque la cha\u00eene s'articule sur le pignon, les pi\u00e8ces de l'articulation peuvent se desserrer. Dans le cas d'un engagement rigide de l'articulation, une rupture par torsion de l'axe ou une d\u00e9chirure du trou primitif de la plaque lat\u00e9rale peut se produire. Les articulations de la cha\u00eene peuvent \u00e9galement se gripper ou coller en raison de l'usure si la cha\u00eene fonctionne au-del\u00e0 de ses limites de vitesse.<\/div><\/li><li class=\"ace-line ace-line old-record-id-M5oOds17AoStHXxEmexcH2vYn1c\" data-list=\"bullet\"><div>Un rev\u00eatement protecteur peut \u00eatre utilis\u00e9 pour pr\u00e9venir la rouille et le grippage potentiel lorsque la cha\u00eene est soumise \u00e0 un fonctionnement intermittent ou \u00e0 des p\u00e9riodes d'inactivit\u00e9 prolong\u00e9es.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-1339392\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-e287f45\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-OCLPdDSEWogAdyxrHkJce9l0no7\" style=\"text-align: center\">Fatigue des plaques lat\u00e9rales aux points de tangage - Chargement cyclique<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-401cc1a\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3641 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/8.Side-Plate-Fatigue-at-Pitch-Points-Cyclic-Loading.jpg\" alt=\"\" width=\"729\" height=\"687\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/8.Side-Plate-Fatigue-at-Pitch-Points-Cyclic-Loading.jpg 729w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/8.Side-Plate-Fatigue-at-Pitch-Points-Cyclic-Loading-300x283.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/8.Side-Plate-Fatigue-at-Pitch-Points-Cyclic-Loading-13x12.jpg 13w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/8.Side-Plate-Fatigue-at-Pitch-Points-Cyclic-Loading-150x141.jpg 150w\" sizes=\"(max-width: 729px) 100vw, 729px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-a122046\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-d6fbc79\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-CHwCd7JMmoYjP7xUXOAcLIu8nHb\" data-list=\"bullet\"><div>La rupture par fatigue de la plaque lat\u00e9rale commence par de tr\u00e8s petites fissures sur les bords des trous de calage. Des cycles de charge r\u00e9p\u00e9t\u00e9s propagent progressivement les fissures vers l'ext\u00e9rieur jusqu'\u00e0 ce que la plaque lat\u00e9rale soit suffisamment affaiblie pour se rompre compl\u00e8tement.<\/div><\/li><li class=\"ace-line ace-line old-record-id-TBxkd9o4roxmzWx6GUhc8pwfnde\" data-list=\"bullet\"><div>La rupture par fatigue se caract\u00e9rise par une s\u00e9rie de courbes concentriques dans une zone pr\u00e9sentant l'aspect d'une fracture fragile. Une analyse approfondie de toutes les conditions de fonctionnement est g\u00e9n\u00e9ralement n\u00e9cessaire pour trouver une solution efficace.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-40d44b2\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-c194b45\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-RJ3RdA0JCo4FAwxGBB6c6Zhtnsb\" style=\"text-align: center\">Fatigue des rouleaux - Corrosion, usure ou remplissage des joints<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-4bba6fc\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3642 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/9.Roller-Fatigue-Corrosion-Wear-or-Filling-of-Joints.jpg\" alt=\"\" width=\"749\" height=\"560\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/9.Roller-Fatigue-Corrosion-Wear-or-Filling-of-Joints.jpg 749w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/9.Roller-Fatigue-Corrosion-Wear-or-Filling-of-Joints-300x224.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/9.Roller-Fatigue-Corrosion-Wear-or-Filling-of-Joints-16x12.jpg 16w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/9.Roller-Fatigue-Corrosion-Wear-or-Filling-of-Joints-150x112.jpg 150w\" sizes=\"(max-width: 749px) 100vw, 749px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-b18bec5\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-8098849\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-SXahdMSbhoBLoAxpfLxcsEVCnzL\" data-list=\"bullet\"><div>Un certain impact se produit lorsque le pignon entre en contact avec les dents du pignon. Si les conditions de fonctionnement impliquent de lourdes charges et des vitesses \u00e9lev\u00e9es, l'impact de l'engagement des dents peut \u00eatre s\u00e9v\u00e8re, g\u00e9n\u00e9rant une force suffisante pour provoquer une forte contrainte sur la surface du rouleau. Des impacts r\u00e9p\u00e9t\u00e9s peuvent entra\u00eener des fissures de fatigue. Finalement, le galet peut se rompre en raison de la fatigue du m\u00e9tal.<\/div><\/li><li class=\"ace-line ace-line old-record-id-D9m3dKjAuoTGX1xxhYsc5pkonmc\" data-list=\"bullet\"><div>La r\u00e9duction de la charge et de la vitesse permet souvent de surmonter la fatigue des rouleaux.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-fa49d62\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-2f45be8\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-PnfYdJSk0omgMdxpGr9c8ipHnce\" style=\"text-align: center\">Rouleaux ou bagues \u00e9cras\u00e9s en raison d'une charge \u00e9lev\u00e9e<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-0087028\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3643 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/10.Crushed-Rollers-or-Bushings-Due-to-High-Load.jpg\" alt=\"\" width=\"567\" height=\"508\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/10.Crushed-Rollers-or-Bushings-Due-to-High-Load.jpg 567w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/10.Crushed-Rollers-or-Bushings-Due-to-High-Load-300x269.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/10.Crushed-Rollers-or-Bushings-Due-to-High-Load-13x12.jpg 13w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/10.Crushed-Rollers-or-Bushings-Due-to-High-Load-150x134.jpg 150w\" sizes=\"(max-width: 567px) 100vw, 567px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-4d5b2a9\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-e342f7d\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-LF2Hd5ZTAoXk22xxA9LclWr5nuk\" data-list=\"bullet\"><div>En raison de l'allongement du pas, les cha\u00eenes tr\u00e8s us\u00e9es peuvent ne plus s'asseoir correctement sur leurs pignons. Certains rouleaux (ou douilles) peuvent entrer en contact avec les pointes des dents du pignon, appliquant une charge suffisante pour \u00e9craser les rouleaux ou les douilles. Lorsque ce type d'engagement est observ\u00e9, la cha\u00eene doit \u00eatre remplac\u00e9e pour \u00e9viter d'endommager excessivement le pignon.<\/div><\/li><li class=\"ace-line ace-line old-record-id-RnWWduo7hocpZaxj4GHcWsQun3f\" data-list=\"bullet\"><div>Une surcharge importante due \u00e0 un blocage inattendu peut \u00e9galement \u00e9craser les rouleaux ou les bagues. Dans ce cas, des mesures correctives sont g\u00e9n\u00e9ralement prises pour \u00e9viter que l'incident ne se reproduise.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-0e5ca3e\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-2fb80fb\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-PJUvdL0iJorylFxrxtYcpLXYnIg\" style=\"text-align: center\">Usure des maillons - glissement entre la roue de traction et la cha\u00eene<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-394199f\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3644 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain.jpg\" alt=\"\" width=\"1283\" height=\"784\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain.jpg 1283w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain-300x183.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain-1024x626.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain-768x469.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain-18x12.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain-1200x733.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/11.Link-Wear-Sliding-Between-Traction-Wheel-and-Chain-150x92.jpg 150w\" sizes=\"(max-width: 1283px) 100vw, 1283px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-4237bb4\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-f9c7f55\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-UOerdImOioj1Rxx8dvecfB7AnNd\" data-list=\"bullet\"><div>Pour les \u00e9l\u00e9vateurs \u00e0 godets et d'autres applications, des roues de traction moins co\u00fbteuses sont souvent utilis\u00e9es \u00e0 la place des pignons. Une traction ad\u00e9quate entre la cha\u00eene et la roue motrice est essentielle pour un fonctionnement efficace.<\/div><\/li><li class=\"ace-line ace-line old-record-id-YwoGd6DFEoh5HExQ5pncS0aFndh\" data-list=\"bullet\"><div>La liaison illustr\u00e9e est utilis\u00e9e dans un \u00e9l\u00e9vateur \u00e0 godets manipulant des produits abrasifs durs. L'usure importante observ\u00e9e est due \u00e0 un glissement pendant les p\u00e9riodes de charge maximale. Dans ce cas, la traction \u00e9tait insuffisante pour entra\u00eener efficacement la cha\u00eene.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-23b68aa\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-324bb64\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-YGhRdSz3eoqcfixpWEKcHu2QnFb\" style=\"text-align: center\">Usure anormale de la cha\u00eene, du pignon ou du rail - D\u00e9salignement<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-56a3acc\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3645 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment.jpg\" alt=\"\" width=\"1320\" height=\"868\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment.jpg 1320w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment-300x197.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment-1024x673.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment-768x505.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment-18x12.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment-1200x789.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/12.Abnormal-Chain-Sprocket-or-Track-Wear-Misalignment-150x99.jpg 150w\" sizes=\"(max-width: 1320px) 100vw, 1320px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-d461e4f\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-946f511\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-VAwmd0SMVoNV1OxwbHNcAEz4nIb\" data-list=\"bullet\"><div>Des sch\u00e9mas d'usure inhabituels sur les cha\u00eenes indiquent g\u00e9n\u00e9ralement un d\u00e9faut d'alignement, qui peut entra\u00eener de graves dommages \u00e0 la cha\u00eene. Les types de d\u00e9salignement les plus courants sont les suivants :<\/div><ul class=\"list-bullet2\"><li class=\"ace-line ace-line old-record-id-RkZBddSNroyvO3xdyCpcnEMunTe\" data-list=\"bullet\"><div>Arbres non parall\u00e8les<\/div><\/li><li class=\"ace-line ace-line old-record-id-KH4udPYiqoILaIxT1P8cgK3lnWh\" data-list=\"bullet\"><div>Les pignons ne sont pas align\u00e9s l'un sur l'autre<\/div><\/li><li class=\"ace-line ace-line old-record-id-JwFFdZV7Io7Tx3xcVo6cEFdAnXb\" data-list=\"bullet\"><div>Les sections de la voie du convoyeur ne sont pas align\u00e9es.<\/div><\/li><\/ul><\/li><li class=\"ace-line ace-line old-record-id-NvDSd4Dq7oR76kxGcXzc7hSDn5g\" data-list=\"bullet\"><div>En cas de d\u00e9salignement, un c\u00f4t\u00e9 de la cha\u00eene est surcharg\u00e9 et la cha\u00eene est forc\u00e9e de se tordre ou de se d\u00e9former lorsqu'elle passe d'un pignon \u00e0 l'autre. Une charge in\u00e9gale de la cha\u00eene peut entra\u00eener l'usure des axes, la d\u00e9faillance des plaques lat\u00e9rales ou une usure rapide.<\/div><\/li><li class=\"ace-line ace-line old-record-id-GnAvdR7W3oj3zyxJ8ZMcSFKCn6f\" data-list=\"bullet\"><div>La meilleure mesure pr\u00e9ventive contre les dommages caus\u00e9s \u00e0 la cha\u00eene par un mauvais alignement consiste \u00e0 inspecter r\u00e9guli\u00e8rement le syst\u00e8me d'entra\u00eenement et de convoyage.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-1c978bb\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-07f8975\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><div class=\"ace-line ace-line old-record-id-MjZNdTTgIozJ9MxqwLjc2b6mnsh\" style=\"text-align: center\">Allongement de la cha\u00eene (ou \u00e9tirement) - Surcharge de traction<\/div><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-d8e968c\" colspan=\"1\" rowspan=\"1\">\n\t\t\t\t\t\t\t<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-3646 aligncenter\" src=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload.jpg\" alt=\"\" width=\"1280\" height=\"842\" srcset=\"https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload.jpg 1280w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload-300x197.jpg 300w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload-1024x674.jpg 1024w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload-768x505.jpg 768w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload-18x12.jpg 18w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload-1200x789.jpg 1200w, https:\/\/www.coomcool.com\/wp-content\/uploads\/2024\/09\/13.Chain-Elongation-or-Stretching-Tensile-Overload-150x99.jpg 150w\" sizes=\"(max-width: 1280px) 100vw, 1280px\" \/><\/p>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t\t\t\t\t<tr class=\"wd-table-row elementor-repeater-item-e6768ee\">\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<td class=\"wd-table-cell elementor-repeater-item-2fad064\" colspan=\"2\" rowspan=\"1\">\n\t\t\t\t\t\t\t<div data-page-id=\"RZSQdltk7otQHixzZ8jcMV7unnf\" data-lark-html-role=\"root\" data-docx-has-block-data=\"false\"><ul class=\"list-bullet1\"><li class=\"ace-line ace-line old-record-id-RbKQdi0JvoJhw2x6arecLPKznxh\" data-list=\"bullet\"><div>Ce type d'allongement implique une d\u00e9formation plastique, o\u00f9 le mat\u00e9riau de la plaque lat\u00e9rale est charg\u00e9 au-del\u00e0 de sa limite d'\u00e9lasticit\u00e9, mais pas de sa r\u00e9sistance ultime. En cons\u00e9quence, les plaques lat\u00e9rales s'\u00e9tirent en permanence mais ne se rompent pas. Si l'allongement du pas est important, la cha\u00eene ne s'engr\u00e8ne plus correctement avec les pignons.<\/div><\/li><li class=\"ace-line ace-line old-record-id-M3DsdeUWHor8RXxJwgRczHnGnbh\" data-list=\"bullet\"><div>Une surcharge de traction entra\u00eenant un allongement de la cha\u00eene peut se produire lorsque l'\u00e9quipement est contraint de fonctionner au-del\u00e0 de sa capacit\u00e9 nominale, en raison de blocages inattendus ou pour d'autres raisons similaires. Des mesures correctives sont g\u00e9n\u00e9ralement prises pour \u00e9viter toute surcharge suppl\u00e9mentaire. Parfois, des dispositifs d'absorption des chocs peuvent \u00eatre utilis\u00e9s pour \u00e9viter de transmettre la surcharge \u00e0 la cha\u00eene.<\/div><\/li><\/ul><\/div>\t\t\t\t\t\t\t<\/td>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/tr>\n\t\t\t\t<\/tbody>\n\t\t\t<\/table>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t<div class=\"wd-negative-gap elementor-element elementor-element-27f41e0 e-flex e-con-boxed e-con e-parent\" data-id=\"27f41e0\" data-element_type=\"container\">\n\t\t\t\t\t<div class=\"e-con-inner\">\n\t\t\t\t<div class=\"elementor-element elementor-element-f6f57c2 elementor-widget__width-inherit elementor-widget elementor-widget-spacer\" data-id=\"f6f57c2\" data-element_type=\"widget\" data-widget_type=\"spacer.default\">\n\t\t\t\t<div class=\"elementor-widget-container\">\n\t\t\t<style>\/*! elementor - v3.23.0 - 25-07-2024 *\/\n.elementor-column .elementor-spacer-inner{height:var(--spacer-size)}.e-con{--container-widget-width:100%}.e-con-inner>.elementor-widget-spacer,.e-con>.elementor-widget-spacer{width:var(--container-widget-width,var(--spacer-size));--align-self:var(--container-widget-align-self,initial);--flex-shrink:0}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container,.e-con>.elementor-widget-spacer>.elementor-widget-container{height:100%;width:100%}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer{height:100%}.e-con-inner>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner,.e-con>.elementor-widget-spacer>.elementor-widget-container>.elementor-spacer>.elementor-spacer-inner{height:var(--container-widget-height,var(--spacer-size))}.e-con-inner>.elementor-widget-spacer.elementor-widget-empty,.e-con>.elementor-widget-spacer.elementor-widget-empty{position:relative;min-height:22px;min-width:22px}.e-con-inner>.elementor-widget-spacer.elementor-widget-empty .elementor-widget-empty-icon,.e-con>.elementor-widget-spacer.elementor-widget-empty .elementor-widget-empty-icon{position:absolute;top:0;bottom:0;left:0;right:0;margin:auto;padding:0;width:22px;height:22px}<\/style>\t\t<div class=\"elementor-spacer\">\n\t\t\t<div class=\"elementor-spacer-inner\"><\/div>\n\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\t<\/div>","protected":false},"excerpt":{"rendered":"<p>Les d\u00e9faillances les plus courantes des cha\u00eenes sont l'usure des axes, la corrosion et la surcharge, souvent caus\u00e9es par une mauvaise lubrification, un mauvais alignement ou des conditions 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