{"id":9530,"date":"2025-02-26T02:53:20","date_gmt":"2025-02-26T02:53:20","guid":{"rendered":"https:\/\/www.skf-eu.com\/?post_type=product&#038;p=9530"},"modified":"2025-05-12T09:48:07","modified_gmt":"2025-05-12T09:48:07","slug":"double-row-cylindrical-roller-bearings","status":"publish","type":"product","link":"https:\/\/www.skf-eu.com\/it\/prodotto\/double-row-cylindrical-roller-bearings\/","title":{"rendered":"Cuscinetti a rulli cilindrici a doppia fila"},"content":{"rendered":"<h2>Introduzione dei cuscinetti a rulli cilindrici a doppia fila<\/h2>\n<p><a href=\"https:\/\/www.skf-eu.com\/product\/double-row-cylindrical-roller-bearings\/\"><strong>Cuscinetti a rulli cilindrici a doppia fila<\/strong><\/a> appartengono a un tipo di <a href=\"https:\/\/www.skf-eu.com\/category\/roller-bearings\/cylindrical-roller-bearings\/\"><strong>Cuscinetti a rulli cilindrici<\/strong><\/a>che presentano i vantaggi della struttura compatta, dell'elevata rigidit\u00e0, della grande capacit\u00e0 di carico, della ridotta deformazione dopo il carico, ecc. Sono particolarmente adatti al supporto dei mandrini delle macchine utensili. In base alla diversa struttura dei corpi volventi caricati, i cuscinetti a rulli cilindrici a due corone possono essere suddivisi in vari tipi, come il tipo NN, il tipo NNF e cos\u00ec via, e ogni tipo ha i suoi specifici scenari applicativi e vantaggi. Ad esempio, i cuscinetti di tipo NNF sono in grado di sopportare grandi carichi radiali e assiali, nonch\u00e9 momenti di ribaltamento, per cui vengono spesso utilizzati come cuscinetti a estremit\u00e0 fissa.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9547 aligncenter\" data-src=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/Double-Row-Cylindrical-Roller-Bearings.webp\" alt=\"Double Row Cylindrical Roller Bearings\" width=\"350\" height=\"350\" srcset=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/Double-Row-Cylindrical-Roller-Bearings.webp 350w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/Double-Row-Cylindrical-Roller-Bearings-300x300.webp 300w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/Double-Row-Cylindrical-Roller-Bearings-150x150.webp 150w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/Double-Row-Cylindrical-Roller-Bearings-12x12.webp 12w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/Double-Row-Cylindrical-Roller-Bearings-100x100.webp 100w\" sizes=\"(max-width: 350px) 100vw, 350px\" \/><\/p>\n<h2>Caratteristiche principali:<\/h2>\n<ul>\n<li><strong>Design a doppia fila<\/strong>: Due file di rulli cilindrici in un unico cuscinetto offrono un'area di contatto pi\u00f9 ampia, che aumenta la capacit\u00e0 di carico e la rigidit\u00e0.<\/li>\n<li><strong>Capacit\u00e0 di carico assiale<\/strong>: Oltre all'elevata capacit\u00e0 di carico radiale, i cuscinetti a rulli cilindrici a due corone sono in grado di gestire anche carichi assiali in entrambe le direzioni, rendendoli adatti ad applicazioni con carichi combinati.<\/li>\n<li><strong>Elevata rigidit\u00e0<\/strong>: La struttura a due corone garantisce una maggiore rigidit\u00e0, rendendo questi cuscinetti ideali per applicazioni ad alta precisione e ad alta rigidit\u00e0.<\/li>\n<li><strong>Basso attrito e bassa escursione termica<\/strong>: L'attrito notevolmente ridotto contribuisce a ridurre la generazione di calore, consentendo di adattare i cuscinetti alle apparecchiature in applicazioni ad alta velocit\u00e0.<\/li>\n<\/ul>\n<h2>Tabella dei parametri del prodotto parziale<\/h2>\n<table class=\"tg\" style=\"border-collapse: collapse; border-spacing: 0px; height: 265px;\" width=\"100%\">\n<thead>\n<tr>\n<th style=\"font-family: Arial, sans-serif; font-size: 14px; font-weight: normal; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\"><span style=\"font-weight: bold;\">Modello<\/span><\/th>\n<th style=\"font-family: Arial, sans-serif; font-size: 14px; font-weight: normal; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\"><span style=\"font-weight: bold;\">Diametro interno (mm)<\/span><\/th>\n<th style=\"font-family: Arial, sans-serif; font-size: 14px; font-weight: normal; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\"><span style=\"font-weight: bold;\">Diametro esterno (mm)<\/span><\/th>\n<th style=\"font-family: Arial, sans-serif; font-size: 14px; font-weight: normal; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\"><span style=\"font-weight: bold;\">Larghezza (mm)<\/span><\/th>\n<th style=\"font-family: Arial, sans-serif; font-size: 14px; font-weight: normal; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\"><span style=\"font-weight: bold;\">Capacit\u00e0 di carico dinamico\/statico (kN)<\/span><\/th>\n<th style=\"font-family: Arial, sans-serif; font-size: 14px; font-weight: normal; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\"><span style=\"font-weight: bold;\">Gamma di velocit\u00e0 (giri\/min)<\/span><\/th>\n<th style=\"font-family: Arial, sans-serif; font-size: 14px; font-weight: normal; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\"><span style=\"font-weight: bold;\">Peso (kg)<\/span><\/th>\n<\/tr>\n<\/thead>\n<tbody>\n<tr>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">NNU 4952<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">260<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">360<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">80<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">460\/340<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">2500<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">13.5<\/td>\n<\/tr>\n<tr>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">31310A<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">50<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">110<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">27<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">23\/15<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">4500<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">1.5<\/td>\n<\/tr>\n<tr>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">NN3009K<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">45<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">75<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">23<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">20\/13<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">5000<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">0.55<\/td>\n<\/tr>\n<tr>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">NNF 5024<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">120<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">180<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">46<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">120\/85<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">3000<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">4.0<\/td>\n<\/tr>\n<tr>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">30312A<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">60<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">130<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">31<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">25\/14<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">4200<\/td>\n<td style=\"font-family: Arial, sans-serif; font-size: 14px; overflow: hidden; padding: 10px 5px; text-align: center; vertical-align: top; word-break: normal; border: 1px solid #000000;\">1.2<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n<h2>Applicazioni dei cuscinetti a rulli cilindrici a doppia fila<\/h2>\n<p>I cuscinetti a rulli cilindrici a doppia fila svolgono un ruolo importante in molti settori delle macchine pesanti, come le macchine utensili, la metallurgia, l'industria mineraria, il petrolio, l'industria chimica e il cemento. Le caratteristiche significative delle prestazioni di questo cuscinetto includono un'eccellente capacit\u00e0 di sopportare carichi pesanti, in modo da poter facilmente affrontare le sfide dei macchinari pesanti; allo stesso tempo, pu\u00f2 anche sopportare efficacemente il carico radiale e assiale composito, per garantire il funzionamento regolare e affidabile dell'apparecchiatura. Inoltre, il cuscinetto a rulli cilindrici a doppia fila mostra una forte adattabilit\u00e0 alla velocit\u00e0, sia che si operi a bassa velocit\u00e0 che ad alta velocit\u00e0, pu\u00f2 mantenere prestazioni eccellenti. Il suo design ad alta precisione migliora la stabilit\u00e0 e l'accuratezza del lavoro, fornendo una solida garanzia per varie applicazioni industriali. In sintesi, i cuscinetti a rulli cilindrici a doppia fila sono stati ampiamente utilizzati e riconosciuti in molti settori industriali grazie alle loro eccellenti caratteristiche prestazionali.<\/p>\n<p>Il cuscinetto a rulli cilindrici a doppia fila offre una combinazione di resistenza, affidabilit\u00e0 e lunga durata.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9548 aligncenter\" data-src=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-1.webp\" alt=\"\" width=\"1000\" height=\"750\" srcset=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-1.webp 1000w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-1-980x735.webp 980w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-1-480x360.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" \/> <img loading=\"lazy\" decoding=\"async\" class=\"size-full wp-image-9549 aligncenter\" data-src=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-2.webp\" alt=\"\" width=\"1000\" height=\"750\" srcset=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-2.webp 1000w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-2-980x735.webp 980w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/02\/warehouse-2-480x360.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) and (max-width: 980px) 980px, (min-width: 981px) 1000px, 100vw\" \/><\/p>\n<h2>FAQ<\/h2>\n<p><strong><b>1. I cuscinetti a rulli cilindrici a doppia fila possono essere smontati e montati? <\/b><\/strong><\/p>\n<p><strong><b>I cuscinetti a rulli cilindrici a doppia fila possono essere smontati, ma non possono essere utilizzati dopo lo smontaggio. Gli anelli interni ed esterni di questi cuscinetti sono separabili, ma nell'uso normale devono combaciare strettamente per sostenere le parti rotanti.<\/b><\/strong><\/p>\n<p><b><\/b><strong><b>2. Quali sono i tipi pi\u00f9 comuni di cuscinetti a rulli cilindrici a doppia fila?<\/b><\/strong><\/p>\n<p><strong><b>I cuscinetti a rulli cilindrici a doppia fila possono essere classificati in NNU, NN e altri modelli a seconda che il collare abbia o meno un bordo di stallo. Questi cuscinetti sono adatti a sopportare carichi pesanti e carichi d'urto, e sono anche adatti per occasioni di rotazione ad alta velocit\u00e0.<\/b><\/strong><\/p>\n<p><strong><b>\u00a03. <\/b><\/strong><b><\/b><strong><b>Come installare correttamente i cuscinetti a rulli cilindrici a doppia fila? <\/b><\/strong><\/p>\n<p><strong><b>Il montaggio dei cuscinetti a rulli cilindrici a due corone pu\u00f2 essere effettuato mediante pressatura o montaggio a caldo. Quando si utilizza una pressa per il montaggio, assicurarsi che l'anello interno del cuscinetto sia a stretto contatto con lo spallamento dell'albero per evitare di provocare rientranze o schiacciamenti sulla pista di rotolamento. Per i cuscinetti di grandi dimensioni, \u00e8 pi\u00f9 adatto il metodo di montaggio a caldo, cio\u00e8 il cuscinetto viene riscaldato ed espanso in olio e poi montato sull'albero per evitare di aggiungere una forza eccessiva al cuscinetto.<\/b><\/strong><\/p>\n<p><b><\/b><strong><b>4. I cuscinetti a rulli cilindrici a doppia fila nell'uso del processo di quale guasto possono verificarsi?<\/b><\/strong><\/p>\n<p><strong><b>I possibili cedimenti dei cuscinetti a rulli cilindrici a due corone durante l'uso includono la rottura degli anelli interni o esterni. Questi cedimenti possono essere causati da carichi eccessivi durante il montaggio, da forti urti o da carichi d'urto ripetuti. Inoltre, anche le cattive condizioni di lubrificazione del cuscinetto possono causare cedimenti.<\/b><\/strong><\/p>","protected":false},"excerpt":{"rendered":"<p>Elevata capacit\u00e0 di carico, basso coefficiente di attrito, elevata rigidit\u00e0, capacit\u00e0 di compensazione dello spostamento assiale, vari tipi, facili da installare e smontare. Applicazioni: Utilizzati nei mandrini delle macchine utensili, nei laminatoi, nelle apparecchiature di sollevamento, nei riduttori di velocit\u00e0, nei motori elettrici e in altri settori industriali, in particolare negli scenari che richiedono alta rigidit\u00e0, alta precisione e carichi elevati.<\/p>","protected":false},"featured_media":9550,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[240,242],"product_tag":[262],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>China Wholesale Double Row Cylindrical Roller Bearings Supplier - Comdale Bearing<\/title>\n<meta name=\"description\" content=\"As Professional Double Row Cylindrical Roller Bearings distributor , Comdale supply Roller Bearings, Ball Bearings, Plain Bearing, Slewing Ring Bearings, Combined Bearings, Linear Bearings\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.skf-eu.com\/it\/prodotto\/double-row-cylindrical-roller-bearings\/\" \/>\n<meta property=\"og:locale\" content=\"it_IT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"China Wholesale Double Row Cylindrical Roller Bearings Supplier - 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