Hydraulic Oil: Basic Information and Types

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Hydraulic Oil Basic Information and Types
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Hydraulic Oil

• Hydraulic oil is also commonly referred to as
  hydraulic fluid. It can be mineral based or
  synthetic. The synthetic hydraulic fluid is
  usually artificially made or man-made whereas the
  mineral based hydraulic one comes from crude
  oils. This oil or fluid is used to facilitate
  power transfer in machinery and also acts as a
  coolant, lubricant and also a sealant to the same
  machinery. Hydraulic oils are usually made from
  several contents such as mineral oil, silicone,
  ethers, glycol and esters among other chemicals.
  There are several uses of hydraulic oil besides
  the primary one that we saw to be transferring
  power within hydraulic systems. However let us
  find out the various types of hydraulic oil first.

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Types of Hydraulic Oil

• Mineral oils these usually come as a result of
  refined crude oil whose quality is then improved
  using various substances. This oil is usually
  labeled in three different labels depending with
  the added substances. The HL labeled oil is that
  with anti-corrosion additives. Then there is the
  HH which is non inhibited and lastly the HM which
  has anti-wear additives.
• Flame retardant oil the use of hydraulic
  petroleum based oil usually poses a high risk of
  fire ignition and for that reason this type of
  oil is as a result of additives such as
  water-glycol and phosphoric acid ester which 
  give it anti-flammable properties.
• Phosphate esters these fluids which are also
  known as HFDR are resistant to fire. They should
  however be taken proper care of to avoid
  contamination which may tamper with their
  properties. Filters should therefore be used to
  counter possible contamination. 

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Common Uses of Hydraulic Oil in Different
Machinery and Equipment

• It is used for automotive lifts car lifts
  usually require hydraulic fluid because they
  highly depend on this kind of power for their
  heavy performance as well as safety. For high
  pressure, the oil is usually highly viscous.
• Used in forklift trucks the forklifting trucks
  usually rely on hydraulic oil when it comes to
  lifting heavy goods. The power of such trucks to
  move around heavy goods effortlessly is
  facilitated by hydraulic oils.
• Used in log splitters the ease at which log
  splitters are able to split the wood is
  facilitated by the power of hydraulic oil.
• In aviation it is used in aviation for
  controlling systems such as the working of hangar
  doors and aircraft jacks.
• For cruising ships in the marine industry the
  comfort and calmness of cruise ships out at the
  sea is facilitated by hydraulic oils. They
  stabilize and control the systems reducing the
  amount of roll for the whole ship.
• Used in tractors the agricultural equipment and
  machinery such as tractors heavily rely on
  hydraulic oils for powering and general
  operations. 

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Uses of Various Additives of Hydraulic Oil

• Anti-corrosive this facilitates the formation of
  a coating or sealant that prevents rusting which
  is facilitated by presence of moisture.
• Anti-wear this additive helps in prolonging the
  life of different machines and equipment.
• Anti-oxidant reduces sludge formation therefore
  making it possible to use oil for long without
  changing it.
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