Recomendações de compras para mangueiras de freio automotivas

Quando nossos clientes adquirem mangueiras de freio automotivo, nós gostamos de dar os seguintes fatores-chave:

1. Especificações e modelos:

• Diâmetro interno e exterior: The inner diameter should match the brake system's pipe fittings to ensure smooth fluid flow. The outer diameter must fit the installation space without interfering with other components.

• Comprimento: Select brake hoses of appropriate length based on the vehicle's brake system layout to facilitate installation without compromising system performance.

• Material: High-performance vehicles or racing cars typically use braided silicone brake hoses (commonly known as steel braided hoses) to enhance heat and pressure resistance.

  
  

2. Requisitos de pressão:

• Pressão de trabalho: The brake system's working pressure is typically around 1000 psi (approximately 70 bar). Therefore, the brake hose's rated working pressure should exceed this value to ensure safety.

• Pressão de ruptura: The brake hose's burst pressure should be at least four times the working pressure, i.e., approximately 4000 psi (about 280 bar), to provide sufficient safety margin.

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3. Normas e Certificações:

• Normas SAE: The Society of Automotive Engineers (SAE) has established several standards related to brake hoses, such as the SAE J2494 series, which covers the dimensions and performance requirements for automotive air brake pipe fittings.

  
  

• Certificação DOT: The U.S. Department of Transportation (DOT) has stringent certification requirements for brake hoses to ensure their performance under high-temperature and high-pressure conditions.

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4. Resistência ao calor:

• Faixa de temperatura de funcionamento: Brake hoses should withstand the high temperatures of brake fluid, typically required to operate between -40°C and 150°C. High-performance brake systems may require higher heat resistance.
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5. Compatibilidade:

• Tipo de fluido de travão: Ensure the brake hoses are compatible with the type of brake fluid used (e.g., DOT3, DOT4, DOT5.1) to prevent chemical reactions that could lead to hose aging or damage.
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6. Seleção de fornecedores:

• Reputação e Qualidade: Choose suppliers with a good reputation and quality assurance to ensure products meet the above standards and requirements.

• Serviço pós-venda: Quality after-sales service can provide timely support and solutions if issues arise with the products.

Antes da aquisição, é aconselhável consultar profissionais ou pessoal técnico para garantir que as mangueiras de freio selecionadas atendam plenamente aos requisitos do veículo e uso.