{"id":13092,"date":"2025-08-24T20:26:44","date_gmt":"2025-08-24T12:26:44","guid":{"rendered":"https:\/\/www.zmsbearing.com\/?page_id=13092"},"modified":"2026-04-14T21:41:27","modified_gmt":"2026-04-14T13:41:27","slug":"rolamentos-de-contacto-angular-de-quatro-pontos","status":"publish","type":"page","link":"https:\/\/www.zmsbearing.com\/pt\/ball-bearings\/angular-contact-ball-bearings\/four-point-angular-contact-bearings\/","title":{"rendered":"Rolamentos de contacto angular de quatro pontos"},"content":{"rendered":"
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In\u00edcio<\/a> \/ Rolamentos de esferas<\/a> \/ Rolamentos de esferas de contacto angular<\/a> \/ Rolamentos de contacto de quatro pontos<\/p><\/div>\n\n\n\n

Rolamentos de contacto de quatro pontos<\/h1><\/div>\n\n\n\n

Os rolamentos de esferas de contacto de quatro pontos s\u00e3o um tipo de rolamento de esferas de contacto angular de uma fila, concebido para suportar cargas axiais principais em ambas as direc\u00e7\u00f5es, bem como cargas radiais limitadas. Caracterizam-se por um design \u00fanico em que o anel interior \u00e9 dividido em duas metades, permitindo que o rolamento entre em contacto com as esferas em quatro pontos sob carga radial.<\/p><\/div>\n\n\n\n

A ZMS fornece rolamentos de esferas de contacto de quatro pontos de alta qualidade na China h\u00e1 15 anos. Existem fabricantes famosos no mundo como SKF, FAG, NSK e assim por diante. A qualidade ser\u00e1 perfeita. Mas se precisar de alta qualidade da China com melhor pre\u00e7o e precisa de ser feito \u00e0 medida para si. Por favor, entre em contacto connosco.<\/p><\/div>\n\n\n\n

Principais s\u00e9ries de rolamentos:
S\u00e9rie QJ2
S\u00e9rie QJ3
S\u00e9rie QJ10
Tamb\u00e9m podemos fornecer rolamentos de esferas de contacto de quatro pontos com ranhuras de localiza\u00e7\u00e3o.<\/p><\/div>\n<\/div>\n<\/div><\/div>\n\n\n\n

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Item<\/h4><\/div><\/div><\/div>\n<\/div>\n\n\n\n
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Desc<\/h4><\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n
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01<\/p><\/div><\/div><\/div>\n<\/div>\n\n\n\n

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Caracter\u00edsticas<\/strong><\/strong><\/h4><\/div><\/div><\/div>\n<\/div>\n\n\n\n
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Conce\u00e7\u00e3o<\/strong>: Consiste num anel exterior s\u00f3lido, um anel interior dividido e um conjunto de esfera e gaiola. As pistas s\u00e3o concebidas com um \u00e2ngulo de contacto elevado (normalmente 35\u00b0), permitindo que o rolamento suporte cargas axiais em ambas as direc\u00e7\u00f5es.

Economia de espa\u00e7o<\/strong>: Requerem menos espa\u00e7o axial do que os rolamentos de contacto angular de duas carreiras, funcionando efetivamente como dois rolamentos de contacto angular de uma carreira numa unidade compacta.

Materiais da gaiola<\/strong>: Utiliza normalmente gaiolas de lat\u00e3o ou de poliamida, sendo que o lat\u00e3o oferece durabilidade para aplica\u00e7\u00f5es a alta velocidade ou a alta temperatura e a poliamida proporciona um funcionamento leve e pouco ruidoso.

Elevada capacidade de carga<\/strong>: Um grande n\u00famero de esferas \u00e9 incorporado, o que confere \u00e0 chumaceira uma grande capacidade de carga.

Capacidade de alta velocidade<\/strong>: Adequado para aplica\u00e7\u00f5es de alta velocidade, especialmente sob cargas axiais puras, devido \u00e0 geometria optimizada da pista e \u00e0 conce\u00e7\u00e3o da gaiola.<\/p><\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

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02<\/p><\/div><\/div><\/div>\n<\/div>\n\n\n\n

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Aplica\u00e7\u00f5es<\/strong><\/strong><\/strong><\/h4><\/div><\/div><\/div>\n<\/div>\n\n\n\n
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Mesas rotativas e mesas de indexa\u00e7\u00e3o<\/strong>
Utilizado em m\u00e1quinas-ferramentas e equipamento CNC para rota\u00e7\u00e3o e posicionamento precisos.

Redutores industriais<\/strong>
Suporta cargas axiais e radiais combinadas de engrenagens, especialmente em projectos de caixas de velocidades compactas.

Aplica\u00e7\u00f5es aeroespaciais<\/strong>
Utilizado em caixas de velocidades de aeronaves, sistemas de controlo e outros componentes em que o espa\u00e7o \u00e9 limitado e as cargas s\u00e3o complexas.

Rob\u00f3tica<\/strong>
Aplicado em articula\u00e7\u00f5es e bra\u00e7os de rob\u00f4s, onde s\u00e3o necess\u00e1rias cargas multidireccionais e elevada precis\u00e3o.

Transmiss\u00f5es e diferenciais para autom\u00f3veis
<\/strong>Lida com as cargas axiais e radiais em conjuntos de engrenagens para autom\u00f3veis.

Eixos de bombas e compressores<\/strong>
Utilizado para suportar veios de impulsores que sofrem cargas axiais radiais e bidireccionais.

Gruas e equipamento de eleva\u00e7\u00e3o<\/strong>
Utilizado em an\u00e9is girat\u00f3rios e plataformas girat\u00f3rias para suportar grandes momentos de viragem e cargas axiais.

Turbinas e\u00f3licas<\/strong>
Utilizados em veios principais e sistemas de guinada, onde a economia de espa\u00e7o e a capacidade de carga s\u00e3o importantes.

Equipamento m\u00e9dico<\/strong>
Encontrado em scanners de TAC e noutros dispositivos m\u00e9dicos rotativos que requerem rolamentos compactos e precisos.

Sistemas de propuls\u00e3o mar\u00edtima<\/strong>
Suporta veios de h\u00e9lices e outros componentes expostos a condi\u00e7\u00f5es de carga complexas.<\/p><\/div><\/div><\/div>\n<\/div>\n<\/div>\n\n\n\n

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03<\/p><\/div><\/div><\/div>\n<\/div>\n\n\n\n

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Personaliza\u00e7\u00e3o<\/strong><\/strong><\/strong><\/h4><\/div><\/div><\/div>\n<\/div>\n\n\n\n
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Podemos personalizar os rolamentos de esferas de contacto angular de quatro pontos de acordo com os requisitos do cliente, com um \u00e2ngulo especial ou com ranhuras de localiza\u00e7\u00e3o. E se houver outros requisitos, tamb\u00e9m podemos verificar a possibilidade para si.<\/p><\/div><\/div><\/div>\n<\/div>\n<\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"

Home \/ Ball Bearings \/ Angular Contact Ball bearings \/ Four Point Contact Bearings Four Point Contact Bearings Four-point contact ball bearings are a 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