Clean Technology Product that Prevents Varnish Buildup in Hydraulic Systems


The Lubrizol Corporation’s exciting new product, Lubrizol® 6776, prevents varnish buildup in hydraulic systems. It uses new, patent-pending Clean Technology and is available globally. “The competitive nature of the hydraulics market has created a trend of increasing power outputs and at the same time smaller fluid reservoirs. As a consequence of these changes, the operating temperatures of hydraulic fluids used in these systems are significantly higher, leading to greater risks of oxidation and thermal degradation of the additives in the fluid. Varnish, the result of that degradation, can result in unplanned downtime, higher maintenance costs and lower profitability,” says Rob Profilet, Lubrizol’s commercial manager of hydraulic and gear oil additives. Over time, varnish build up can increase the friction inside the valves, especially those with fine tolerances such as servo and proportional types, where this phenomenon can be especially troublesome. The impact of sticking valves on the hydraulic system is impaired responsiveness and reduced oil flow, which results in overall loss of efficiency and increase in maintenance costs. Lubrizol’s new Clean Technology package provides: • Excellent oxidation life to help extend oil life and prevent varnish formation. • High-level thermal stability to help minimize varnish formation. • Excellent demulsibility so water separates quickly. • Outstanding antiwear protection of system components. • High-level rust and corrosion protection to help extend component life. • Excellent filterability, even in the presence of water. Lubrizol 6776 is particularly suited to hydraulic applications where high temperatures—mobile equipment, plastic injection molding machines, glass transfer systems, heavy presses, etc.— can be problematic and compromise the oil’s life. It is also suitable for equipment owners who want to extend the life of their oil and their equipment, including valves, filters and pumps.
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