{"id":2377,"date":"2026-02-07T13:16:00","date_gmt":"2026-02-07T05:16:00","guid":{"rendered":"https:\/\/www.takebrakes.com\/?p=2377"},"modified":"2026-02-05T14:43:13","modified_gmt":"2026-02-05T06:43:13","slug":"what-causes-uneven-braking-vibration-or-judder-on-crane-brakes","status":"publish","type":"post","link":"https:\/\/www.takebrakes.com\/fr\/what-causes-uneven-braking-vibration-or-judder-on-crane-brakes\/","title":{"rendered":"Quelles sont les causes du freinage in\u00e9gal, des vibrations ou du \u00ab judder \u00bb sur les freins de grue ?"},"content":{"rendered":"<p>Une freinage irr\u00e9gulier ou des \u00e0-coups sur les ponts roulants et portiques sont g\u00e9n\u00e9ralement caus\u00e9s par un contact de friction incoh\u00e9rent ou un jeu m\u00e9canique. Les causes courantes incluent un mauvais alignement entre le frein et le disque\/tambour, une usure in\u00e9gale du lining, un \u00e9cart d'air\/jeu incorrect, des broches et des bagues us\u00e9es cr\u00e9ant du jeu, ou une roue\/disque de frein avec un d\u00e9calage, des rayures ou des points chauds. Les linings contamin\u00e9s (huile, graisse, humidit\u00e9) peuvent \u00e9galement cr\u00e9er des zones de friction alternantes \u00e9lev\u00e9es\/basses qui ressemblent \u00e0 des vibrations ou \u00e0 un blocage.<\/p>    <p>Le contr\u00f4le du timing peut \u00e9galement contribuer. Si un frein s'engage alors qu'il reste encore une vitesse ou un couple r\u00e9siduel lors de la transition (notamment avec des palans VFD), le syst\u00e8me peut jerker et osciller. La solution consiste \u00e0 inspecter les surfaces de friction, confirmer l'alignement et les jeux, remplacer les joints us\u00e9s, et s'assurer que le frein s'engage au bon moment dans le profil de mouvement. Utilisez autant que possible des mat\u00e9riaux de friction OEM, car des coefficients incompatibles peuvent augmenter le judder et l'instabilit\u00e9.<\/p>","protected":false},"excerpt":{"rendered":"<p>Uneven braking or judder on overhead and gantry cranes is typically caused by inconsistent friction contact or mechanical looseness. Common causes include misalignment between brake and disc\/drum, uneven lining wear, incorrect air gap\/clearance, worn pins and bushings creating play, or a brake wheel\/disc with runout, scoring, or hot spots. Contaminated linings (oil, grease, moisture) can [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"_acf_changed":false,"footnotes":""},"categories":[132,3],"tags":[133],"class_list":["post-2377","post","type-post","status-publish","format-standard","hentry","category-faq","category-blog","tag-overhead-or-gantry-crane"],"acf":[],"_links":{"self":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts\/2377","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts"}],"about":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/types\/post"}],"author":[{"embeddable":true,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/comments?post=2377"}],"version-history":[{"count":1,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts\/2377\/revisions"}],"predecessor-version":[{"id":2388,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts\/2377\/revisions\/2388"}],"wp:attachment":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/media?parent=2377"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/categories?post=2377"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags?post=2377"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}