{"id":9830,"date":"2025-03-27T06:05:52","date_gmt":"2025-03-27T06:05:52","guid":{"rendered":"https:\/\/www.skf-eu.com\/?post_type=product&#038;p=9830"},"modified":"2025-04-24T08:06:32","modified_gmt":"2025-04-24T08:06:32","slug":"single-row-four-point-contact-ball-bearings","status":"publish","type":"product","link":"https:\/\/www.skf-eu.com\/pt\/produto\/single-row-four-point-contact-ball-bearings\/","title":{"rendered":"Rolamentos de esferas de quatro pontos de contacto de uma fila"},"content":{"rendered":"<h2>Introdu\u00e7\u00e3o aos rolamentos de esferas de contacto de quatro pontos de uma fila<\/h2>\n<p><a href=\"https:\/\/www.skf-eu.com\/product\/single-row-four-point-contact-ball-bearings\/\"><strong>Rolamentos de esferas de contacto de quatro pontos de uma fila<\/strong><\/a> s\u00e3o um elemento de suporte rotativo comum, caracterizado por uma estrutura de contacto de quatro pontos entre as pistas do anel interior e exterior e uma \u00fanica fila de esferas de a\u00e7o. Esta conce\u00e7\u00e3o permite-lhe suportar simultaneamente momentos radiais, axiais e de capotamento, e tem uma conce\u00e7\u00e3o compacta, elevada capacidade de carga e excelente desempenho de rota\u00e7\u00e3o, pelo que \u00e9 amplamente utilizado numa variedade de equipamentos que requerem apoio e rota\u00e7\u00e3o.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-9835 aligncenter\" data-src=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/Four-point-contact-ball-slewing-bearings4.webp\" alt=\"Single row four point contact ball bearings\" width=\"486\" height=\"486\" srcset=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/Four-point-contact-ball-slewing-bearings4.webp 486w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/Four-point-contact-ball-slewing-bearings4-480x480.webp 480w\" sizes=\"(min-width: 0px) and (max-width: 480px) 480px, (min-width: 481px) 486px, 100vw\" \/><\/p>\n<h2>Modelos comuns e lista de par\u00e2metros<\/h2>\n<p>Os modelos de rolamentos de esferas de contacto de quatro pontos de uma carreira s\u00e3o classificados de acordo com o tamanho, a capacidade de carga e os cen\u00e1rios de aplica\u00e7\u00e3o espec\u00edficos. De seguida, apresentamos alguns modelos t\u00edpicos e os seus par\u00e2metros para refer\u00eancia:<\/p>\n<p>Modelo Di\u00e2metro interior (mm) Di\u00e2metro exterior (mm) Altura (mm) Carga din\u00e2mica (kN) Carga est\u00e1tica (kN) Velocidade limite (rpm)<\/p>\n<ul>\n<li>QJ204 20 47 14 12,5 6,8 9000<\/li>\n<li>QJ206 30 62 16 19.5 10.5 7500<\/li>\n<li>QJ208 40 80 18 28,5 15,5 6300<\/li>\n<li>QJ210 50 90 20 35,0 19,0 5600<\/li>\n<li>QJ212 60 110 22 45,0 25,0 4800<\/li>\n<li>QJ215 75 130 25 60,0 35,0 4000<\/li>\n<li>QJ218 90 160 30 85,0 50,0 3400<\/li>\n<li>QJ220 100 180 34 100,0 60,0 3000<\/li>\n<\/ul>\n<p><strong>Nota: Os dados s\u00e3o apenas para refer\u00eancia. Os par\u00e2metros espec\u00edficos t\u00eam de ser confirmados de acordo com os diferentes fabricantes ou especifica\u00e7\u00f5es de projeto.<\/strong><\/p>\n<h2>An\u00e1lise dos dom\u00ednios de aplica\u00e7\u00e3o t\u00edpicos<\/h2>\n<p>Devido \u00e0 sua estrutura compacta, forte capacidade de carga e funcionamento flex\u00edvel, os rolamentos de esferas de contacto de quatro pontos de uma carreira s\u00e3o amplamente utilizados nas seguintes ind\u00fastrias:<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-9834 aligncenter\" data-src=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/application-of-Slewing-Ring-Bearings.webp\" alt=\"Single row four point contact ball bearings\" width=\"597\" height=\"398\" \/><\/p>\n<h3>M\u00e1quinas de engenharia<\/h3>\n<ul>\n<li>Cen\u00e1rios de aplica\u00e7\u00e3o: escavadoras, gruas, cami\u00f5es-bomba de bet\u00e3o, etc.<\/li>\n<li>Fun\u00e7\u00e3o: Suportar plataformas rotativas e suportar cargas mec\u00e2nicas complexas.<\/li>\n<li>Carater\u00edsticas: Design simples, instala\u00e7\u00e3o r\u00e1pida e pode satisfazer requisitos de carga elevados.<\/li>\n<\/ul>\n<h3>Equipamento de produ\u00e7\u00e3o de energia e\u00f3lica<\/h3>\n<ul>\n<li>Cen\u00e1rios de aplica\u00e7\u00e3o: Sistema de guinada de turbinas e\u00f3licas.<\/li>\n<li>Fun\u00e7\u00e3o: Suportar a rota\u00e7\u00e3o da torre e resistir \u00e0s cargas de vento e de tombamento.<\/li>\n<li>Carater\u00edsticas: Elevada fiabilidade de funcionamento a longo prazo, adequada para condi\u00e7\u00f5es de trabalho dif\u00edceis.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-9836 aligncenter\" data-src=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/Slewing-Ring-Bearings-for-Wind-power.webp\" alt=\"Single row four point contact ball bearings\" width=\"547\" height=\"281\" srcset=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/Slewing-Ring-Bearings-for-Wind-power.webp 313w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/Slewing-Ring-Bearings-for-Wind-power-300x154.webp 300w, https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/03\/Slewing-Ring-Bearings-for-Wind-power-18x9.webp 18w\" sizes=\"(max-width: 547px) 100vw, 547px\" \/><\/p>\n<h3>Equipamento m\u00e9dico<\/h3>\n<ul>\n<li>Cen\u00e1rios de aplica\u00e7\u00e3o: Scanners de TAC, m\u00e1quinas de raios X, etc.<\/li>\n<li>Fun\u00e7\u00e3o: Fornecer suporte de rota\u00e7\u00e3o para garantir um posicionamento exato.<\/li>\n<li>Carater\u00edsticas: Baixo ru\u00eddo, alta precis\u00e3o, adequado para as necessidades do ambiente m\u00e9dico.<\/li>\n<\/ul>\n<h3>Rob\u00f4s industriais<\/h3>\n<ul>\n<li>Cen\u00e1rios de aplica\u00e7\u00e3o: Juntas de rob\u00f4s, m\u00f3dulos de rota\u00e7\u00e3o.<\/li>\n<li>Fun\u00e7\u00e3o: Obter rota\u00e7\u00e3o e posicionamento de alta precis\u00e3o.<\/li>\n<li>Carater\u00edsticas: Tamanho reduzido, grande flexibilidade.<\/li>\n<\/ul>\n<h3>Equipamento de defesa<\/h3>\n<ul>\n<li>Cen\u00e1rios de aplica\u00e7\u00e3o: Antenas de radar, lan\u00e7adores de m\u00edsseis, etc.<\/li>\n<li>Fun\u00e7\u00e3o: Suportar estruturas rotativas e adaptar-se a condi\u00e7\u00f5es mec\u00e2nicas complexas.<\/li>\n<li>Carater\u00edsticas: Elevada capacidade de carga, adequada para ambientes extremos.<\/li>\n<\/ul>\n<h2>Resumo<\/h2>\n<p>Os rolamentos de esferas de contacto de quatro pontos de uma fila s\u00e3o um rolamento de desempenho abrangente com as seguintes vantagens:<\/p>\n<ol>\n<li>Conce\u00e7\u00e3o estrutural compacta: Disposi\u00e7\u00e3o das esferas de a\u00e7o numa fila \u00fanica, dimens\u00f5es reduzidas.<\/li>\n<li>Elevada capacidade de carga: Pode suportar v\u00e1rias cargas mec\u00e2nicas ao mesmo tempo.<\/li>\n<li>Excelente desempenho de funcionamento: Baixa fric\u00e7\u00e3o, adequada para funcionamento a alta velocidade.<\/li>\n<li>Vasta gama de aplica\u00e7\u00f5es: M\u00e1quinas de engenharia, equipamento de energia e\u00f3lica, instrumentos m\u00e9dicos, robots e equipamento militar.<\/li>\n<\/ol>\n<p>Ao selecionar tais <a href=\"https:\/\/www.skf-eu.com\/category\/slewing-ring-bearings\/\"><strong>Rolamentos de anel girat\u00f3rio<\/strong><\/a>A fim de garantir o cumprimento dos requisitos de desempenho e de dura\u00e7\u00e3o do funcionamento do equipamento, \u00e9 necess\u00e1rio ter em conta o ambiente de trabalho real, os requisitos de carga e os requisitos de precis\u00e3o.<\/p>","protected":false},"excerpt":{"rendered":"<p><strong>Carater\u00edsticas:<\/strong><\/p>\n<ul>\n<li>Contacto de quatro pontos<\/li>\n<li>Elevada capacidade de carga<\/li>\n<li>Poupan\u00e7a de espa\u00e7o<\/li>\n<li>Elevada rigidez<\/li>\n<li>Instala\u00e7\u00e3o f\u00e1cil<\/li>\n<\/ul>\n<p><strong>\u00c1reas de aplica\u00e7\u00e3o:<\/strong><\/p>\n<ul>\n<li>M\u00e1quinas de constru\u00e7\u00e3o<\/li>\n<li>Produ\u00e7\u00e3o de energia e\u00f3lica<\/li>\n<li>Equipamento m\u00e9dico<\/li>\n<li>Rob\u00f4s industriais<\/li>\n<li>Aeroespacial<\/li>\n<\/ul>","protected":false},"featured_media":9831,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[252],"product_tag":[275],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v23.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>China Wholesale Single Row Four Point Contact Ball Bearings Supplier - Comdale Bearing<\/title>\n<meta name=\"description\" content=\"As Professional Single Row Four Point Contact Ball 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\/pt\/produto\/single-row-four-point-contact-ball-bearings\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta 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