Procurement Recommendations for Automotive Brake Hoses

When our customers procuring automotive brake hoses, we like to give the following key factors:

1. Specifications and Models:

• Inner and Outer Diameter: 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.

• Length: 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. Pressure Requirements:

• Working Pressure: 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.

• Burst Pressure: 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. Standards and Certifications:

• SAE Standards: 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.

  
  

• DOT Certification: 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. Heat Resistance:

• Operating Temperature Range: 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. Compatibility:

• Brake Fluid Type: 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. Supplier Selection:

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

• After-Sales Service: Quality after-sales service can provide timely support and solutions if issues arise with the products.

Before procurement, it is advisable to consult with professionals or technical personnel to ensure the selected brake hoses fully meet your vehicle and usage requirements.