{"id":9905,"date":"2025-04-23T01:50:07","date_gmt":"2025-04-23T01:50:07","guid":{"rendered":"https:\/\/www.skf-eu.com\/?post_type=product&p=9905"},"modified":"2025-04-24T08:17:21","modified_gmt":"2025-04-24T08:17:21","slug":"radial-spherical-plain-bearings","status":"publish","type":"product","link":"https:\/\/www.skf-eu.com\/pt\/produto\/radial-spherical-plain-bearings\/","title":{"rendered":"R\u00f3tulas radiais"},"content":{"rendered":"

1. Vis\u00e3o geral das r\u00f3tulas radiais<\/strong><\/h2>\n

\"Radial<\/p>\n

Defini\u00e7\u00e3o:<\/strong><\/h3>\n

A r\u00f3tulas radiais<\/strong>\u00a0<\/a>(R\u00f3tula Radial Auto-alinhante) s\u00e3o o tipo de rolamento deslizante que permite um certo erro angular entre o eixo e o assento do rolamento (normalmente 2-3\u00b0). Pode alcan\u00e7ar o auto-alinhamento atrav\u00e9s da sua estrutura esf\u00e9rica e compensar os efeitos dos erros de instala\u00e7\u00e3o ou da flex\u00e3o do veio.<\/p>\n

Carater\u00edsticas estruturais:<\/strong><\/h3>\n

Anel interior: di\u00e2metro exterior esf\u00e9rico, bem ajustado ao assento da chumaceira.<\/p>\n

Anel exterior: di\u00e2metro interior esf\u00e9rico, emparelhado com o pesco\u00e7o do veio.<\/p>\n

Material de deslizamento: normalmente \u00e9 utilizado material composto de a\u00e7o e material ou revestimento de cobre\/PTFE para reduzir o coeficiente de fric\u00e7\u00e3o.<\/p>\n

2. Modelos comuns e tabela de par\u00e2metros de tamanho<\/strong><\/h2>\n

1. Exemplos de modelos padr\u00e3o (tomando como exemplo a s\u00e9rie GE)<\/strong><\/h3>\n\n\n\n\n\n\n\n
Modelo<\/th>\nDi\u00e2metro interior (mm)<\/th>\nDi\u00e2metro exterior (mm)<\/th>\nLargura (mm)<\/th>\nCapacidade de carga (kN)<\/th>\n\u00c2ngulo de deflex\u00e3o admiss\u00edvel (\u00b0)<\/th>\nCombina\u00e7\u00e3o de materiais<\/th>\n<\/tr>\n<\/thead>\n
GE20ES<\/td>\n20<\/td>\n42<\/td>\n20<\/td>\n12.5<\/td>\n2.5<\/td>\nCostas de a\u00e7o + PTFE<\/td>\n<\/tr>\n
GE30C<\/td>\n30<\/td>\n55<\/td>\n25<\/td>\n25.0<\/td>\n3.0<\/td>\nCostas de a\u00e7o + liga de cobre<\/td>\n<\/tr>\n
GE50ES-2RS<\/td>\n50<\/td>\n50<\/td>\n36<\/td>\n50.0<\/td>\n2.0<\/td>\nSelado + PTFE<\/td>\n<\/tr>\n<\/tbody>\n<\/table>\n

2. Compara\u00e7\u00e3o com outras s\u00e9ries<\/strong><\/h3>\n

S\u00e9rie SA: adequada para aplica\u00e7\u00f5es pesadas, com um di\u00e2metro exterior maior (por exemplo, SA40, di\u00e2metro interior 40 mm, di\u00e2metro exterior 80 mm).<\/p>\n

S\u00e9rie GEC: com design de flange, adequado para ocasi\u00f5es que requerem posicionamento axial.<\/p>\n

Marcas comuns:<\/strong><\/h3>\n

Temos esta marca de Rolamentos esf\u00e9ricos deslizantes<\/strong><\/a> agora:-<\/p>\n

Rolamento esf\u00e9rico deslizante radial SKF
\nRolamento esf\u00e9rico deslizante radial FAG
\nRolamento esf\u00e9rico deslizante radial NSK
\nRolamento esf\u00e9rico deslizante radial KOYO
\nRolamento esf\u00e9rico deslizante radial TIMKEN
\nRolamento esf\u00e9rico deslizante radial INA
\nRolamento esf\u00e9rico deslizante radial NTN<\/p>\n

3. An\u00e1lise da aplica\u00e7\u00e3o<\/strong><\/h2>\n

1. Cen\u00e1rios de aplica\u00e7\u00e3o t\u00edpicos<\/strong><\/h3>\n

M\u00e1quinas de engenharia: como o ponto de articula\u00e7\u00e3o do bra\u00e7o da escavadora, compensando a deforma\u00e7\u00e3o da estrutura.<\/p>\n

Equipamento agr\u00edcola: Por exemplo, o eixo de acionamento da ceifeira-debulhadora adopta uma conce\u00e7\u00e3o de veda\u00e7\u00e3o \u00e0 prova de p\u00f3.<\/p>\n

\"Tractor<\/p>\n

Transmiss\u00e3o industrial: como o rolo da m\u00e1quina de papel, utilizando materiais de revestimento resistentes \u00e0 corros\u00e3o.<\/p>\n

\"Drum<\/p>\n

2. Pontos de sele\u00e7\u00e3o<\/strong><\/h3>\n

Carga: Quando a carga din\u00e2mica \u00e9 maior do que a carga est\u00e1tica, os materiais \u00e0 base de cobre devem ser preferidos.<\/p>\n

Velocidade: Os casquilhos de PTFE s\u00e3o adequados para aplica\u00e7\u00f5es a alta velocidade (<500rpm), enquanto as ligas de cobre s\u00e3o mais adequadas para condi\u00e7\u00f5es de trabalho a baixa velocidade e alta carga.<\/p>\n

Environment: In a humid environment, it is recommended to choose a stainless steel housing and sealing design (such as GE…ES-2RS).<\/p>\n

4. FAQ<\/strong><\/h2>\n

Q1: Como determinar se o rolamento necessita de lubrifica\u00e7\u00e3o?
\nNon-self-lubricating models (such as GE30C) require regular addition of lithium-based grease; while self-lubricating models (models with the “ES” suffix) do not require maintenance.
\nQ2: Qual \u00e9 o \u00e2ngulo de desalinhamento m\u00e1ximo permitido durante a instala\u00e7\u00e3o?
\nGeralmente 2-3\u00b0. Se este intervalo for ultrapassado, pode provocar uma concentra\u00e7\u00e3o de tens\u00f5es nos bordos, reduzindo assim a vida \u00fatil da chumaceira.
\nQ3: Qual pode ser a causa do ru\u00eddo anormal do rolamento?
\nAs raz\u00f5es poss\u00edveis incluem:
\n\u2460 Lubrifica\u00e7\u00e3o insuficiente;
\n\u2461 Entrada de poeira;
\n\u2462 Desgaste do revestimento esf\u00e9rico (tem de ser substitu\u00eddo).
\nQ4: Qual \u00e9 a vantagem das chumaceiras esf\u00e9ricas de deslizamento radial em rela\u00e7\u00e3o \u00e0s chumaceiras esf\u00e9ricas de rolos?
\nTem uma forte resist\u00eancia ao impacto e capacidade antipolui\u00e7\u00e3o, mas \u00e9 adequado para velocidades mais baixas.<\/p>\n

5. Recomenda\u00e7\u00f5es de manuten\u00e7\u00e3o<\/strong><\/h2>\n

Inspe\u00e7\u00e3o regular: Verificar o desgaste de 6 em 6 meses, especialmente no caso de rolamentos em aplica\u00e7\u00f5es pesadas.
\nCiclo de lubrifica\u00e7\u00e3o: Os modelos n\u00e3o autolubrificantes necessitam de ser lubrificados de novo ap\u00f3s cada 500 horas de trabalho.
\nCrit\u00e9rios de substitui\u00e7\u00e3o: Quando a folga radial excede 0,15 mm ou ocorre descama\u00e7\u00e3o do revestimento, a chumaceira tem de ser substitu\u00edda.<\/p>","protected":false},"excerpt":{"rendered":"

Principais vantagens das r\u00f3tulas radiais<\/strong><\/p>\n

Auto-alinhamento - adapta-se \u00e0 deflex\u00e3o do veio, reduz a tens\u00e3o nos bordos e prolonga a vida \u00fatil.
\nResist\u00eancia ao impacto - a estrutura de fric\u00e7\u00e3o deslizante \u00e9 mais resistente \u00e0 vibra\u00e7\u00e3o e \u00e0s cargas de impacto do que os rolamentos.
\nAnti-polui\u00e7\u00e3o - o design selado (como o casquilho PTFE) \u00e9 adequado para ambientes agressivos, como poeira e humidade.
\nSem manuten\u00e7\u00e3o (opcional) - os modelos auto-lubrificantes n\u00e3o necessitam de lubrifica\u00e7\u00e3o frequente, reduzindo os custos de manuten\u00e7\u00e3o.
\nCarga elevada - design do casquilho em a\u00e7o + liga de cobre\/pol\u00edmero, adequado para condi\u00e7\u00f5es de baixa velocidade e carga pesada.<\/p>\n

Aplica\u00e7\u00f5es t\u00edpicas<\/strong>
\n\ud83d\udd27 M\u00e1quinas de constru\u00e7\u00e3o - ponto de articula\u00e7\u00e3o do bra\u00e7o da escavadora, suporte girat\u00f3rio da grua (compensa\u00e7\u00e3o da deforma\u00e7\u00e3o estrutural).
\nM\u00e1quinas agr\u00edcolas - eixo de transmiss\u00e3o do trator, biela da colhedora (resistente \u00e0 lama, \u00e1gua, areia e poeira).
\nEquipamento industrial - tambor de m\u00e1quina de papel, rolo de correia transportadora (resistente \u00e0 corros\u00e3o, revestimento \u00e0 prova de ferrugem).
\nInd\u00fastria pesada - moinhos metal\u00fargicos, trituradores mineiros (alto impacto + carga pesada a baixa velocidade).<\/p>","protected":false},"featured_media":9906,"template":"","meta":{"_et_pb_use_builder":"","_et_pb_old_content":"","_et_gb_content_width":""},"product_cat":[244,258],"product_tag":[259],"yoast_head":"\nChina Wholesale Radial spherical plain bearings Supplier - Comdale Bearing<\/title>\n<meta name=\"description\" content=\"As Professional Radial spherical plain 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\/radial-spherical-plain-bearings\/\" \/>\n<meta property=\"og:locale\" content=\"pt_PT\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"China Wholesale Radial spherical plain bearings Supplier - Comdale Bearing\" \/>\n<meta property=\"og:description\" content=\"As Professional Radial spherical plain bearings distributor , Comdale supply Roller Bearings, Ball Bearings, Plain Bearing, Slewing Ring Bearings, Combined Bearings, Linear Bearings\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.skf-eu.com\/pt\/produto\/radial-spherical-plain-bearings\/\" \/>\n<meta property=\"og:site_name\" content=\"Comdale Bearing\" \/>\n<meta property=\"article:modified_time\" content=\"2025-04-24T08:17:21+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.skf-eu.com\/wp-content\/uploads\/2025\/04\/Radial-spherical-plain-bearings-1.webp\" \/>\n\t<meta property=\"og:image:width\" content=\"600\" \/>\n\t<meta property=\"og:image:height\" content=\"338\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/webp\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Tempo estimado de leitura\" \/>\n\t<meta name=\"twitter:data1\" content=\"4 minutos\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.skf-eu.com\/product\/radial-spherical-plain-bearings\/\",\"url\":\"https:\/\/www.skf-eu.com\/product\/radial-spherical-plain-bearings\/\",\"name\":\"China Wholesale Radial spherical plain bearings Supplier - 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