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repair service san diego Hydraulic
fluids are a large group of fluids used as the motive medium in hydraulic
machinery. Fluid types include synthetic compounds, mineral oil, water, and
water-based mixtures. The fluids are found in machinery and equipment ranging
from brakes, power steering systems, and transmissions to backhoes, excavators,
garbage trucks and industrial shredders. Hydraulic systems are very common
in aircraft flight control systems.Hydraulic
systems like the ones mentioned above will work most efficiently if the hydraulic
fluid used has low compressibility.Composition
1.1 Base stock 1.2 Other components 1.3 Biodegradable hydraulic fluids 2 Brake
fluid 3 Safety
4 Trade names
5 Aircraft hydraulic systems
6 See also
7 External links
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[edit] Composition
[edit] Base stock
Base stock may be any of: castor oil, glycol, esters, ethers, mineral oil,
organophosphate ester, polyalphaolefin, propylene glycol, or silicone.
[edit] Other components
Hydraulic fluids can contain a wide range of chemical compounds, including:
oils, butanol, esters (e.g. phthalates, like DEHP, and adipates, like bis(2-ethylhexyl)
adipate), polyalkylene glycols (PAG), phosphate esters (e.g. tributylphosphate),
silicones, alkylated aromatic hydrocarbons, polyalphaolefins (PAO) (e.g. polyisobutenes),
corrosion inhibitors, etc.
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repair service san diego
[edit] Biodegradable hydraulic fluids
Environmentally sensitive applications (e.g. farm tractors and marine dredging)
may benefit from using biodegradable hydraulic fluids based upon rapeseed
(Canola) vegetable oil when there is the risk of an oil spill from a ruptured
oil line. Typically these oils are available as ISO 32, ISO 46, and ISO 68
specification oils. ASTM standards ASTM-D-6006, Guide for Assessing Biodegradability
of Hydraulic Fluids and ASTM-D-6046, Standard Classification of Hydraulic
Fluids for Environmental Impact are relevant.
[edit] Brake fluid
Brake fluid is a subtype of hydraulic fluid with high boiling point and low
freezing point. It is intentionally hygroscopic, so that it will absorb water
which could otherwise cause corrosion of brake system components.
[edit] Safety
Because industrial hydraulic systems operate at hundreds to thousands of PSI
and temperatures reaching hundreds of degrees Celsius, severe injuries and
death can result from component failures and care must always be taken when
performing maintenance on hydraulic systems.
Fire resistance is a property available with specialized fluids.
[edit] Trade names
Some of the trade names for hydraulic fluids include Durad, Fyrquel, Houghton-Safe,
Hydraunycoil, Lubritherm Enviro-Safe, Pydraul, Quintolubric, Reofos, Reolube,
and Skydrol.
[edit] Aircraft hydraulic systems
Hydraulic systems like the ones mentioned above will work most efficiently if the hydraulic fluid used has low compressibility.
Contents [hide]
1 Composition
1.1 Base stock
1.2 Other components
1.3 Biodegradable hydraulic fluids
2 Brake fluid
3 Safety
4 Trade names
5 Aircraft hydraulic systems
6 See also
7 External links
[edit] Composition
[edit] Base stock
Base stock may be any of: castor oil, glycol, esters, ethers, mineral oil,
organophosphate ester, polyalphaolefin, propylene glycol, or silicone.
[edit] Other components
Hydraulic fluids can contain a wide range of chemical compounds, including:
oils, butanol, esters (e.g. phthalates, like DEHP, and adipates, like bis(2-ethylhexyl)
adipate), polyalkylene glycols (PAG), phosphate esters (e.g. tributylphosphate),
silicones, alkylated aromatic hydrocarbons, polyalphaolefins (PAO) (e.g. polyisobutenes),
corrosion inhibitors, etc.
[edit] Biodegradable hydraulic fluids
Environmentally sensitive applications (e.g. farm tractors and marine dredging)
may benefit from using biodegradable hydraulic fluids based upon rapeseed
(Canola) vegetable oil when there is the risk of an oil spill from a ruptured
oil line. Typically these oils are available as ISO 32, ISO 46, and ISO 68
specification oils. ASTM standards ASTM-D-6006, Guide for Assessing Biodegradability
of Hydraulic Fluids and ASTM-D-6046, Standard Classification of Hydraulic
Fluids for Environmental Impact are relevant.
[edit] Brake fluid
Brake fluid is a subtype of hydraulic fluid with high boiling point and low
freezing point. It is intentionally hygroscopic, so that it will absorb water
which could otherwise cause corrosion of brake system components.
[edit] Safety
Because industrial hydraulic systems operate at hundreds to thousands of PSI
and temperatures reaching hundreds of degrees Celsius, severe injuries and
death can result from component failures and care must always be taken when
performing maintenance on hydraulic systems.
Fire resistance is a property available with specialized fluids.
[edit] Trade names
Some of the trade names for hydraulic fluids include Durad, Fyrquel, Houghton-Safe,
Hydraunycoil, Lubritherm Enviro-Safe, Pydraul, Quintolubric, Reofos, Reolube,
and Skydrol.
[edit] Aircraft hydraulic systems