Press Release: How heat can stress your 4WD braking components

Depending on the environment and driving conditions, car brakes, especially on 4wd vehicles, can reach temperatures as high as 500 degrees Celsius. This extreme heat not only impacts braking performance but also reduces the durability of brake components, which can be particularly important when navigating rugged terrains or off-road conditions.

Manufacturers of high-quality braking components, such as Bendix, address these challenges through extensive research, testing programs, and by sourcing the best materials for their products. In 4wd vehicles, the demands on the braking system can be even greater due to frequent stops on steep descents or sudden halts while navigating obstacles.

One crucial factor in manufacturing parts like brake rotors is metallurgy — the science of metal composition — as it affects how heat dissipates. However, other non-metal brake parts can sometimes be overlooked. One material that is particularly susceptible to heat stress is rubber, which is used in components such as dust boots that protect the brake calliper slide pins and in brake piston seals. The heat generated during braking is especially damaging to rubber because brake parts undergo numerous heat cycles each time the vehicle is driven, particularly in off-road scenarios where braking can be more frequent and intense.

Therefore, it is essential to carefully inspect these rubber components as part of regular brake system maintenance, especially for 4wd vehicles that may face harsher conditions. Critically, rubber is also a primary material in the manufacturing of brake hoses, which are vital in 4wd braking systems, ensuring that hydraulic pressure from the brake pedal translates to effective braking force at the calliper. Consequently, brake hoses must be inspected regularly as part of brake system checks to ensure they can withstand demanding off-road conditions.

The Importance of Quality Brake Hoses for 4wd Vehicles.

When it comes to designing and manufacturing high-quality brake hoses, Bendix takes no chances. Bendix Brake Hoses are built to meet and often exceed SAE standards, FMVSS regulations, and other industry benchmarks, making them ideal for the rigorous needs of 4wd vehicles.

To ensure exceptional performance and durability, the hoses are constructed from PTFE (Teflon®) tubing, wrapped in woven stainless steel 304 braid, and finished with a Bendix blue Polyvinyl Chloride (PVC) protective layer. This protective layer safeguards the braid from dirt, dust, and grime that can accumulate during off-road adventures.

While steel braiding isn’t required under SAE standards, this additional feature enhances the brake pedal feel and prevents the hose from over-expanding under high braking pressures, which is especially crucial when driving on steep inclines or rough terrain. For improved performance, Bendix Brake Hoses also incorporate chrome-plated steel fittings with rubber over-mouldings that reduce coupling-to-hose fatigue. This design ensures durability in the tough conditions frequently encountered by 4wd vehicles, providing confidence and safety during every off-road journey.

For more information, visit the Bendix website http://www.bendix.com.au

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