{"id":2413,"date":"2026-02-08T10:26:00","date_gmt":"2026-02-08T02:26:00","guid":{"rendered":"https:\/\/www.takebrakes.com\/?p=2413"},"modified":"2026-02-08T10:26:00","modified_gmt":"2026-02-08T02:26:00","slug":"what-does-a-blue-or-heat-spotted-brake-wheel-disc-indicate-on-a-crane","status":"publish","type":"post","link":"https:\/\/www.takebrakes.com\/fr\/what-does-a-blue-or-heat-spotted-brake-wheel-disc-indicate-on-a-crane\/","title":{"rendered":"Que signifie une roue ou un disque de frein bleu ou tach\u00e9 de chaleur sur une grue ?"},"content":{"rendered":"<p>Blue discoloration, heat spots, or rainbow patterns on a brake wheel or disc typically indicate overheating. This can result from excessive braking energy, high stops\/hour, incorrect brake sizing, or\u2014very commonly\u2014<strong>brake dragging<\/strong> due to insufficient release. Overheating can change the surface metallurgy, reduce friction stability, and accelerate lining wear. It may also introduce warping or runout that causes vibration and uneven braking.<\/p>\n<p>Sur les ponts roulants et les grues \u00e0 portique, les dommages caus\u00e9s par la chaleur sont un signe d'alarme s\u00e9rieux car ils peuvent entra\u00eener une perte d'efficacit\u00e9 du frein lors d'urgences et une r\u00e9duction du couple de maintien. Examinez les causes profondes : v\u00e9rifiez les jeux, la course du thruster ou la tension de la bobine, la libert\u00e9 de la liaison et le timing de contr\u00f4le avec les VFD. Revoyez \u00e9galement le cycle de service par rapport \u00e0 la capacit\u00e9 thermique du frein.<\/p>\n<p>Selon la gravit\u00e9, un resurfa\u00e7age ou un remplacement peut \u00eatre n\u00e9cessaire. Si des fissures, des rayures s\u00e9v\u00e8res ou une d\u00e9formation sont pr\u00e9sentes, le remplacement est g\u00e9n\u00e9ralement l'option la plus s\u00fbre pour les applications de levage critiques.<\/p>","protected":false},"excerpt":{"rendered":"<p>Blue discoloration, heat spots, or rainbow patterns on a brake wheel or disc typically indicate overheating. This can result from excessive braking energy, high stops\/hour, incorrect brake sizing, or\u2014very commonly\u2014brake dragging due to insufficient release. Overheating can change the surface metallurgy, reduce friction stability, and accelerate lining wear. It may also introduce warping or runout [&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-2413","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\/2413","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=2413"}],"version-history":[{"count":1,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts\/2413\/revisions"}],"predecessor-version":[{"id":2434,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/posts\/2413\/revisions\/2434"}],"wp:attachment":[{"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/media?parent=2413"}],"wp:term":[{"taxonomy":"category","embeddable":true,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/categories?post=2413"},{"taxonomy":"post_tag","embeddable":true,"href":"https:\/\/www.takebrakes.com\/fr\/wp-json\/wp\/v2\/tags?post=2413"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}