When it comes to extreme temperature changes or adverse operating conditions, high-viscosity hydraulic oils are the best choice for your hydraulic pump. But how do you know if you're using the right type of fluid? The answer to that question depends on several factors, such as the type of pump, its maximum operating temperature, its maximum operating pressure, and even the type of material the pump seals are made of. Vane pumps provide a constant fluid flow, but can suffer high rates of wear between the vanes and the cam ring if an adequate anti-wear oil is not used. Piston pumps are more durable and can produce much higher operating pressures, but are relatively complex and expensive.
Gear pumps are less expensive, easier to lubricate and can withstand greater amounts of pollution, but they are the least efficient and can only provide relatively low pressures. Most hydraulic systems can work with many different fluids, including multigrade engine oil, automatic transmission fluid, and more conventional anti-wear (AW) hydraulic oil. The oil or fluid you choose depends on your equipment and how you intend to use it. In some cases, a hydraulic system or pump may require hydraulic fluid with additives to maintain its lubricity in the presence of high pressures. When it comes to selecting the right type of hydraulic filter for your system, Donaldson offers options for low, medium and high pressure applications. Hydraulic fluid contamination causes most hydraulic system failures, resulting in costly repairs and replacements.
MAC Hydraulics provides customized maintenance plans to meet your preventive maintenance needs and objectives, including helping you ensure that the most appropriate hydraulic fluid is used in your systems. DIN 51524; HLP-D fluids are a class of hydraulic anti-wear fluids that contain detergents and dispersants; these fluids are approved by most major manufacturers of hydraulic components. However, many applications of hydraulic equipment are different and there are many differences between hydraulic systems, so choosing the right fluid is not easy. The oldest type of hydraulic fluid is water-based, but in modern times it is not used as much as other types of hydraulic fluid. Petroleum-based hydraulic fluid has a tendency to accumulate sludge which can compromise the performance and efficiency of the pump. Foaming can also occur when trapped gases are released from the hydraulic fluid. When selecting a hydraulic fluid for your system, there are some key questions to ask yourself.
Choose the right pollution control and monitoring properties to ensure the life of hydraulic components and fluid. The hydraulic pump is the heart of any hydraulic system, and the wrong choice of fluid can seriously affect its performance and life expectancy.