Bendix oil-coalescing air treatment technology increasingly important to fleets

PuraGuard air dryer cartridges help prevent oil damage to critical vehicle systems.


As commercial vehicle technology advances and expands the use of air for non-braking functions, it is more important than ever to protect vehicles' air systems from contamination to ensure longevity and performance.

Bendix Commercial Vehicle Systems LLC reminds fleets and owner-operators that the use of BendixPuraGuardoil-coalescing air dryers, coupled with regular cartridge maintenance, is a crucial part of keeping air systems, oil-sensitive components, and vehicles functioning safely on the roadways.

More than 40 years ago, Bendix – the North American leader in the development and manufacture of leading-edge active safety and braking system technologies – revolutionized commercial vehicles by inventing the air dryer to provide clean, dry air to reservoirs, valves, and other components. Installed between the compressor and reservoirs, the air dryer collects and removes solid, liquid, and aerosol contaminants such as water and oil before they enter the air brake system and jeopardize efficient operation. To date, Bendix has produced more than 10 million air dryers, including more than 50,000 PuraGuardoil-coalescing air dryer cartridges, since its launch in 2009.

Bendix PuraGuard oil-coalescing air dryer cartridges are highly proficient at preventing oil – as well as other contaminants – from entering a vehicle's air system, thereby protecting a variety of downstream parts and systems. Oil can be particularly harmful to an air system, contributing to premature damage in a variety of components such as push-pull dash valves, spring brake modulating valves, and brake chamber diaphragms. And oil-deteriorated seals can cause air system leaks that may be negatively noted during roadside inspection. 

With the impact of CSA (Compliance, Safety, Accountability) on fleets and owner-operators, taking steps to ensure system integrity is even more important today. Oil contamination can lead to the failure of any system that relies on clean air for proper operation, including the air brake, engine, emission, and drivetrain systems. These systems include a variety of advanced technologies required to meet stricter emissions regulations on vehicles built after 2007 and 2010, as well as technologies that fleets are increasingly adopting to improve productivity and fuel economy. BendixPuraGuardoil-coalescing technology protects a variety of expensive vehicle systems, including safety-critical brake components, diesel particulate filters (DPFs), Selective Catalytic Reduction (SCR) systems, transmissions, and more. These advanced systems are extremely sensitive to oil contamination, and steps to reduce their exposure, such as using Bendix PuraGuard oil-coalescing cartridges, can potentially save a fleet thousands in future repair costs.

"Air dryers using Bendix PuraGuard oil-coalescing air dryer cartridges help fleet owners and operators protect their investments by preserving not just braking systems, but also the costly advanced emissions and powertrain systems on today's trucks and buses," said Mark McCollough, Bendix vice president and general manager for the Charging business group. "We provide fleets with a solution that outperforms the competition in removing oil and other contaminants from the air brake system. As a result, we're helping fleets keep their vehicles on the road, increase their service cycles, and reduce their maintenance costs."

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