{"id":3021,"date":"2021-01-21T09:21:27","date_gmt":"2021-01-21T08:21:27","guid":{"rendered":"https:\/\/www.redhillballs.com\/?page_id=3021"},"modified":"2025-09-29T10:49:47","modified_gmt":"2025-09-29T08:49:47","slug":"esferas-de-poliuretano-pur","status":"publish","type":"page","link":"https:\/\/www.redhillballs.com\/pt-pt\/produtos\/esferas-de-plastico\/esferas-de-poliuretano-pur\/","title":{"rendered":"Esferas de poliuretano (PUR)"},"content":{"rendered":"<h2>\ud83d\udee0\ufe0f <a href=\"https:\/\/en.wikipedia.org\/wiki\/Polyurethane\">Esferas de poliuretano (PUR) \u2013 resilientes, que n\u00e3o marcam<\/a><\/h2>\n<p>As esferas de poliuretano (PUR) combinam alta resili\u00eancia, resist\u00eancia \u00e0 abras\u00e3o e amortecimento de ru\u00eddo com contato que n\u00e3o danifica a superf\u00edcie. Ideais quando absor\u00e7\u00e3o de choque, movimento silencioso e prote\u00e7\u00e3o de superf\u00edcie s\u00e3o essenciais\u2014como em v\u00e1lvulas de reten\u00e7\u00e3o, alimentadores e mancais de baixa velocidade\u2014o PUR oferece desempenho dur\u00e1vel e aderente sem o peso ou a corros\u00e3o dos metais.<\/p>\n<h3>\ud83d\udd27 Especifica\u00e7\u00f5es t\u00e9cnicas principais<\/h3>\n<ul>\n<li><strong>Composi\u00e7\u00e3o<\/strong>: Elast\u00f4mero PUR fundido (poli\u00e9ster ou poli\u00e9ter) \/ graus TPU<\/li>\n<li><strong>Estrutura<\/strong>: Elast\u00f4mero reticulado ou termopl\u00e1stico<\/li>\n<li><strong>Dureza<\/strong>: Shore A ~70\u201395 (opcional Shore D ~45\u201360)<\/li>\n<li><strong>Densidade<\/strong>: ~1.10\u20131.25 g\/cm\u00b3<\/li>\n<li><strong>Temperatura de servi\u00e7o<\/strong>: \u221230 a +80 \u00b0C (curto prazo ~+90 \u00b0C)<\/li>\n<li><strong>El\u00e9trico<\/strong>: Bom isolante; n\u00e3o magn\u00e9ticas<\/li>\n<\/ul>\n<h3>\u2705 Vantagens<\/h3>\n<ul>\n<li><strong>Resist\u00eancia \u00e0 abras\u00e3o &amp; corte<\/strong><\/li>\n<li><strong>Amortecimento de choque &amp; ru\u00eddo<\/strong><\/li>\n<li><strong>Ader\u00eancia que n\u00e3o marca<\/strong>: Alto atrito, contato suave<\/li>\n<li><strong>Toler\u00e2ncia qu\u00edmica<\/strong>: Boa com \u00f3leos\/graxas; PUR poli\u00e9ter resiste \u00e0 hidr\u00f3lise<\/li>\n<\/ul>\n<h3>\ud83d\udd04 Aplica\u00e7\u00f5es das Esferas de poliuretano<\/h3>\n<ul>\n<li><strong>V\u00e1lvulas de reten\u00e7\u00e3o &amp; sedes<\/strong><\/li>\n<li><strong>Alimentadores vibrat\u00f3rios &amp; selecionadores<\/strong><\/li>\n<li><strong>Rolos\/mancais de baixa velocidade<\/strong><\/li>\n<li><strong>Batentes, acoplamentos, guias<\/strong><\/li>\n<\/ul>\n<h3>\ud83d\udce6 Classes &amp; tamanhos dispon\u00edveis<\/h3>\n<ul>\n<li><a href=\"https:\/\/www.redhillballs.com\/company\/precision-grades\/\"><strong>Classes<\/strong>: ISO 3290 GI \u2013 GIII<\/a><\/li>\n<li><strong>Intervalo de di\u00e2metros<\/strong>: 1\/16&#8243; \u2013 4&#8243;<\/li>\n<\/ul>\n","protected":false},"excerpt":{"rendered":"<p>\ud83d\udee0\ufe0f Esferas de poliuretano (PUR) \u2013 resilientes, que n\u00e3o marcam As esferas de poliuretano (PUR) combinam alta resili\u00eancia, resist\u00eancia \u00e0 abras\u00e3o e amortecimento de ru\u00eddo com contato que n\u00e3o danifica a superf\u00edcie. Ideais quando absor\u00e7\u00e3o de choque, movimento silencioso e prote\u00e7\u00e3o de superf\u00edcie s\u00e3o essenciais\u2014como em v\u00e1lvulas de reten\u00e7\u00e3o, alimentadores e mancais de baixa velocidade\u2014o [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":9160,"parent":3007,"menu_order":7,"comment_status":"closed","ping_status":"closed","template":"","meta":{"footnotes":""},"class_list":["post-3021","page","type-page","status-publish","has-post-thumbnail","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Esferas de poliuretano (PUR) \u2013 elasticidade e resist\u00eancia<\/title>\n<meta name=\"description\" content=\"Esferas de poliuretano (PUR) oferecem alta elasticidade, resist\u00eancia \u00e0 abras\u00e3o e absor\u00e7\u00e3o de impacto para aplica\u00e7\u00f5es industriais.\" \/>\n<meta name=\"robots\" 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