![]() Is there a difference between hydraulic oil and hydraulic fluid?Īlthough hydraulic oil and hydraulic fluid are terms that are often used interchangeably, there are some subtle differences. Low-temperature hydraulic oil is a popular name for fluid used here. In arctic conditions, oil can start to solidify – if equipment is not properly lubricated it will seize upĪdditives retain their viscosity when exposed to high temperaturesĪnti-wear additives to cope under pressureĪnti-freeze additives to avoid freezing or waxing. High-pressure environments will break machinery Under high heat, oil becomes less viscous and flows easier which can cause leaks, rapid deterioration or loss of the required properties Its general characteristics include a high viscosity index and being in-compressible.Ĭommon uses of hydraulic oil and the type of additive(s) used to help optimum performance A hydraulic oil’s properties can be adjusted depending on which additives are used. The above additives can be used on their own or in conjunction with other blends created for different functions. Anti-wear – helps extend the lifetime of equipment (AW hydraulic fluids).Anti-rust – forms a protective coating which reduces damage from rust and oxygen.Anti-oxidant – allows the oil to be used for longer and reduces sludge build-up.Anti-foaming – reduces foaming caused by detergents in the fluid, which can reduce the lubricating aspect of the fluid and cause machinery damage.Hydraulic oil additivesĭepending on what you use hydraulic fluid for, additional additives may be needed to help its performance under different operating conditions. Examples include passenger cars, motorbikes, light trucks and some bicycles which do not have liquids that are substantially compressible.īrake fluids are usually glycol-ether based but silicone-based and mineral oil are also used. Construction – used in a range of light, mid and heavy duty construction machinery such as cranes, excavators and tipper trucksĪnother common type of hydraulic oil is brake fluid which is used in hydraulic brake and clutch applications to transfer force into pressure and to increase braking force.Snow ploughs – an essential component in the operation of the hydraulic lift, tilt and angle movements, and blended with anti-freeze additives.Nautical – for marine vessel stabilisers to reduce the amount of oil which can affect a ship’s balance and cause sea sickness.Automotive lifts – car lifts and car jacks require hydraulic jack oil to provide safety as well as performance.Aircraft – hydraulic oil must be reliable for control systems, aircraft hangar doors, aircraft jacks and aircraft controls.Agricultural machinery and vehicles – to operate the hydraulic brakes and hydraulic systems such as boom arms.Wood (log) splitters – to power the ram mechanism on a hydraulic oil log splitter.Forklift trucks and stackers – to power the forks which lift heavy goods.They are used in pretty much every industry due to their large number of benefits hydraulic application examples include: What is hydraulic oil used for?Īs well as to transfer power, hydraulic oils also serve as a lubricant, coolant and sealant in machinery and equipment. Synthetic fluids can be formulated to impart superior physical properties as compared to mineral oils, such as high temperature performance, oxidation stability and biodegradability. Mineral-based hydraulic oils are derived from crude oil fractions, whereas synthetic oils are manufactured using chemically produced base fluids. ![]() What is the difference between mineral-based and synthetic hydraulic oil? It works in a large range of temperatures and reduces wear, corrosion and rust. Made up of oils and additives, hydraulic liquids transfer power whilst also acting as a lubricant and coolant. ![]() At Nationwide Fuels, we supply 99% mineral-based hydraulic oils. Hydraulic oil, also known as hydraulic fluid, is a synthetic (man-made) or mineral-based, non-compressible fluid that is used to transfer power in hydraulic machinery and equipment.
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