As advancements in fluid power technology continue to shape various industries, tackling one of its most persistent challenges—leak prevention—remains at the forefront. In this episode of Fluid Power Forum, hosted by Eric Lanke, we delve deep into this intricate topic with Trevor Combs, a global technical manager at Trelleborg Sealing Solutions. Trevor brings insight into how adopting a system-level approach in hydraulics can help mitigate leakage issues, enhance reliability, and improve overall system performance.
In the fluid power industry, external leakage is more than just an inconvenience; it's a costly and enduring challenge for both original equipment manufacturers and component suppliers. Trevor highlights the importance of shifting towards a systems-thinking approach to address leaks, which involves understanding the interaction between key elements: the counter surface, the fluid, and the seals themselves.
1. Counter Surface Considerations
The counter surface, particularly the rod surface in linear applications, plays a critical role in sealing efficiency. Made up of different components like the substrate and coating, its surface finish is paramount in supporting the seal and maintaining adequate lubrication.
2. Fluid Dynamics and Considerations
Fluids do much more than transmit power. They aid in heat transfer, contamination control, and lubrication. Their properties, such as viscosity index, temperature range, and cleanliness, significantly impact sealing performance.
3. Seals: The Last Line of Defense
Seals, with their varied geometries and materials, are crucial in preventing leaks. Trevor explains the delicate balance between friction and sealability—or leakage. Linear applications often require multiple components working together, like primary and secondary seals, wear rings, and wipers.
Trevor sheds light on the latest innovations that Trelleborg Sealing Solutions is bringing to market:
Trevor gives us a glimpse of prospective innovations, particularly in surface treatments and materials development. Moving away from chrome and venturing into polymer coatings can improve friction without compromising sealability. Additionally, advancements in PFAS-free materials and bio-based fluids are paving the way for more sustainable solutions.
Maintaining a balance between friction and sealing ability is a critical goal. Trelleborg's focus on predictive maintenance and customer collaboration highlights their commitment to continuous improvement and tailored sealing solutions.
Concluding Thoughts
Contamination may be the kryptonite of hydraulic systems, but innovative sealing technologies and a comprehensive understanding of system-level interactions are vital in combating this challenge. By highlighting the interconnectedness of hydraulics' components, industries can better prevent leaks and enhance their systems' longevity and efficiency. For those interested in further exploring these topics, the our white paper, "Preventing Leaks in Fluid Power Systems," is an essential read and can be found on our website.
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Read the full whitepaper at the NFPA Technology Reports website.
Connect with our host, Eric Lanke, at elanke@nfpa.com.
Connect with our guest, Trevor Combs, at trevor.combs@trelleborg.com.
Learn more about Trelleborg Sealing Solutions, here.
Find and share more interesting fluid power technologies and unique applications using #onlyfluidpowercan and follow podcast and other fluid power industry-related updates at @TheNFPA.
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